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Charcoal-based toothpastes could increase risk of tooth decay

14/05/2019

Charcoal-based toothpastes - which claim to help whiten teeth - could actually increase the risk of tooth decay and staining, a review published in the British Dental Journal has found. According to the review, charcoal-based toothpastes often contain little or no fluoride to help protect teeth and the claims they make about whitening are not supported by any evidence. Furthermore, excessive brushing with them can actually do more harm than good because they are often more abrasive than regular toothpastes and can cause damage to tooth enamel and gums. The authors of the paper say people should stick to brushing with a regular fluoride toothpaste and consult their dentist about teeth bleaching/whitening. Speaking about the review, Prof Damien Walmsley, from the British Dental Association, said: “Charcoal-based toothpastes offer no silver bullets for anyone seeking a perfect smile, and come with real risks attached. “So don't believe the hype. Anyone concerned about staining or discoloured teeth that can't be shifted by a change in diet, or improvements to their oral hygiene, should see their dentist.” The bottom line, according to study co-author Dr Joseph Greenwall-Cohen, from the University of Manchester Dental School, is that charcoal-based toothpastes do not provide “a low cost, quick-fix, tooth-whitening option.”

Substituting red meat for plant protein reduces heart disease risk

23/04/2019

We recently wrote about how just one rasher of bacon a day can increase bowel cancer risk. Now, new research has revealed that replacing red meat with plant protein can reduce heart disease risk. For the study, researchers from Harvard T.H. Chan School of Public Health in Boston, MA, and Purdue University in West Lafayette, IN, conducted a meta-analysis of trials comparing the effects of meat vs. other diets on our health. The results are published in the journal Circulation. It was an approach that allowed the researchers to not only examine the health effects of red meat, but also see whether substituting red meat for other protein sources brought benefits. Analyzing data from 36 randomized controlled trials, the researchers looked at the blood pressure and blood concentrations of cholesterol, triglycerides, and lipoproteins of the participants. They then compared these levels with those of people who ate less red meat and more chicken, fish, legumes, soy, nuts, or carbohydrates. They found that while there wasn’t much difference in lipoproteins, blood pressure, or total cholesterol, diets high in red meat did cause an increase in triglyceride concentrations. In addition, diets rich in high-quality plant protein led to lower levels of bad cholesterol. Speaking about the findings of the research, Marta Guasch-Ferré, lead author of the study and research scientist in the Department of Nutrition at the Harvard T.H. Chan School of Public Health, said: “Previous findings from randomized controlled trials evaluating the effects of red meat on cardiovascular disease risk factors have been inconsistent. “But, our new study, which makes specific comparisons between diets high in red meat versus diets high in other types of foods, shows that substituting red meat with high-quality protein sources lead to more favorable changes in cardiovascular risk factors.”

Just one rasher of bacon a day can increase bowel cancer risk

18/04/2019

Consuming even small amounts of red and processed meat each day can increase a person’s risk of bowel cancer, a new study has found. According to the research led by Oxford University and funded by Cancer Research UK (CRUK), just one rasher of bacon per day can increase the risk of bowel cancer. Eat three rashers per day (around 50g) and the risk of bowel cancer rises by 20%. While meat is a good source of protein, vitamins and minerals, the Department of Health in England advises that anyone who eats more than 90g of red and processed meat a day should reduce their consumption to 70g, the average daily amount consumed in the UK. Processed meat, in particular, has previously been linked to a high likelihood of causing cancer. So foods like bacon, salami, hotdogs and some sausages should not be eaten too much on a daily basis. Also,  high temperature cooking, such as on a barbecue, is also thought to increase a person’s risk of cancer due to the carcinogenic chemicals that are created during the cooking process. For the research, the study team analysed health data from almost half a million people in the UK. Speaking about the findings of the research, Emma Shields, information manager at CRUK, said “This study shows the more meat you eat, the higher your risk of getting cancer and obviously the reverse is true - the less you eat the less likely you are to get bowel cancer.”

Eating vegetables is better than taking supplements, finds research

16/04/2019

Many people do not get all the nutrients they need from food and so take supplements to compensate. It’s something that’s worth an absolute fortune to the companies that produce them, with people spending around $30 billion per year on supplements in the United States alone. But new research shows that nutrients from supplements are not as good as those from food and that the latter is linked to a lower risk of all-cause mortality and cancer. According to the research paper, published recently in the Annals of Internal Medicine, many people would be much better off spending money on fruit and vegetables instead of supplements. By analysing data from 27,725 participants in the Centers for Disease Control’s National Health and Nutrition Examination Survey (NHANES), researchers from the Friedman School of Nutrition Science and Policy at Tufts University in Medford, MA, found that supplements do not afford the same benefits as eating different foods. For example, getting enough vitamin K from leafy greens and magnesium from legumes, nuts and whole grains was associated with a lower mortality rate. However, consuming 1,000 milligrams a day of calcium in supplement form was associated with a higher cancer risk, while getting excess calcium from food wasn’t. Speaking about the findings of the research, Fang Fang Zhang of Tufts University and study senior author, said: “Our results support the idea that, while supplement use contributes to an increased level of total nutrient intake, there are beneficial associations with nutrients from foods that aren’t seen with supplements.” In other words, while supplements can help people who cannot get certain nutrients from foods due to allergies, they are not a silver bullet for health.

Is your diet killing you?

04/04/2019

Our daily diets are bigger killers than smoking and account for one in five deaths around the world. In other words, the food you eat could be sending you to an early grave. But which diets are the worst? Well, according to an influential study in The Lancet, salt – whether it be in bread, processed meals or soy sauce – shortens the most lives. The Global Burden of Disease Study used estimates of different countries’ eating habits to determine which diets were shortening the most lives. Here are the three most dangerous diets: Too much salt - three million deaths Too few whole grains - three million deaths Too little fruit - two million deaths Low levels of seeds, nuts, vegetables, fibre and omega-3 from seafood were the other major killers. Speaking to the BBC, Prof Christopher Murray, the director of the Institute for Health Metrics and Evaluation at the University of Washington, said: “We find that diet is one of the dominant drivers of health around the world, it's really quite profound.” Salt is such a big problem because it significantly increases a person’s blood pressure, which in turn increases their chances of heart attacks and strokes. Around 10 million out of the 11 million diet-related deaths were because of cardiovascular disease, highlighting why diets containing too much salt are such a problem.

Just one hour of brisk walking a week can really benefit people with osteoarthritis

02/04/2019

We’ve only just written about how a low-carb diet may help relieve symptoms of knee osteoarthritis and now a new study has revealed that just one hour of brisk walking per week can significantly lower mobility-related disability in people with knee osteoarthritis. According to the research, the findings of which appear in the American Journal of Preventive Medicine, just one hour of weekly exercise lowered the risk of mobility-related disability in seniors with knee osteoarthritis by 85% and that of daily living disability by nearly 45%. For the study, a team of researchers from the Northwestern University Feinberg School of Medicine, in Chicago, IL, led by Dorothy Dunlop, Ph.D., analyzed data from more than 1,500 adults. All of the participants were living with osteoarthritis and experienced aches, pain, and stiffness in their lower extremities as a result. However, none of them had a disability prior to the study. Over a period of four years, the researchers monitored the participants’ levels of physical activity. They found that the seniors who got at least one hour of moderate-to-vigorous activity each week had no trouble performing a range of daily tasks. However, in seniors who did not engage in this much physical activity, 24% could not walk across a street before the traffic lights changed, and 23% struggled to perform their daily morning tasks. Speaking about the findings of the research, Prof. Dunlop said: “We hope this new public health finding will motivate an intermediate physical activity goal. One hour a week is a stepping stone for people who are currently inactive. People can start to work toward that.”

A low-carb diet may help relieve symptoms of knee osteoarthritis

28/03/2019

If you or someone you know suffers with knee osteoarthritis, a new study may provide some hope. One of the most widespread forms of arthritis in the United States, osteoarthritis affects around 10% of men and 13% of women over the age of 60. Moreover, some estimates say it affects almost 40% of people over the age of 70. What’s worse is there is currently no cure, with doctors and medical professionals usually prescribing painkillers to help alleviate symptoms. Knee replacement surgery is also an option that’s considered. However, a new study led by Robert Sorge, Ph.D., who is the director of the PAIN Collective in the University of Alabama at Birmingham Department of Psychology, has found that a diet low in carbohydrates could help relieve knee osteoarthritis symptoms. Having followed either a low-carb or low-fat diet for 12 weeks, the 21 adults aged 65–75 who had knee osteoarthritis and participated in the study were examined to see what the effect had been. The participants’ functional pain levels were analyzed, as well as their serum blood levels for oxidative stress, both at the beginning of the study and at the end. Participants that followed the low-carb diet had reduced functional pain levels and levels of self-reported pain. Furthermore, they also showed less oxidative stress in their serum blood levels. Speaking about the findings of the study, Sorge said: “Our work shows [that] people can reduce their pain with a change in diet.”

Study finds eating later in the day promotes obesity

26/03/2019

As obesity rates across the world continue to rise, understanding exactly why we put on weight has never been more important. That’s why the findings of a new study, which looked at whether there is an association between when we eat and how much weight we gain, could be very significant. Presenting their findings at the ENDO 2019 conference, which took place in New Orleans, the scientists from the University of Colorado in Denver said there is a link between eating later in the day and having a higher BMI, as well as more body fat. For the study, 31 adults who were either overweight or obese and had an average age of 36 years were closely monitored to assess their sleep, levels of activity, and diet. Interestingly, the study also showed that the participants who ate later in the day still had an average of 7 hours sleep each night, suggesting that lack of sleep may not promote obesity after all. Speaking about the findings of the study, Dr. Adnin Zaman, lead author, said “These findings support our overall study, which will look at whether restricting the eating window to earlier on in the day will lower obesity risk.”

Losing weight can reverse type-2 diabetes, study suggests

07/03/2019

Following a low-calorie diet – even for just a few months – can arrest type-2 diabetes for at least two years, new research suggests. The findings of the study highlight that type-2 diabetes might not necessarily be the life sentence we previously thought. Nearly 300 people with type-2 diabetes in Scotland and Tyneside (in the UK) participated in the study. Half were given standard diabetes care, while the other half were put on a structured weight management programme. After 12 months, 46% of those on the low-calorie programme had successfully reversed their type-2 diabetes. In comparison, just 4% of the study participants given the standard treatment had gone into remission. Two years later, 36% of the study participants on the structured weight management programme were still in remission. “People with type 2 diabetes and healthcare professionals have told us their top research priority is: ‘Can the condition be reversed or cured?’ We can now say, with respect to reversal, that yes it can. Now we must focus on helping people maintain their weight loss and stay in remission for life,” said Prof Mike Lean from Glasgow University, who led the study with Taylor. Type-2 diabetes causes blood sugar levels to rise and can lead to serious complications such as amputations, visual problems and heart disease. It is thought that one in 16 adults in the UK is currently living with type-2 diabetes, a condition that is fuelled by obesity. [Related reading: Why being overweight increases your risk of cancer]  

Does eating breakfast help or hinder weight loss?

12/02/2019

People all over the world routinely sit down to eat breakfast every day. And while menus and traditions vary depending on where you are, many people are in agreement that breakfast is “the most important meal of the day.” That’s because it provides the body with the energy and nutrients needed to start the day. But what bearing does eating breakfast each day have when you are trying to lose weight? Well, according to a new study – the findings of which were published in the BMJ - the answer is not a lot at all. In fact, not only did the study find no evidence that eating breakfast aids weight loss, it also found that skipping breakfast doesn’t have a negative effect and isn’t linked to people feeling hungrier. For the study, the team from Monash University in Melbourne, Australia, analyzed 13 randomized controlled trials. They found that daily calorie intake was higher in individuals who ate breakfast than in those who didn’t. The authors concluded: “Although eating breakfast regularly could have other important effects, caution is needed when recommending breakfast for weight loss in adults, as it may have the opposite effect.” In other words, there is no one-size-fits-all approach. Eating or skipping breakfast has different effects depending on the person’s unique metabolism.

Are we eating more or less meat nowadays?

05/02/2019

Cutting down on meat is something many people say they are striving to do nowadays. Initiatives like Veganuary and Meat-free Mondays are helping to drive the trend and highlight the benefits of consuming less meat. But what’s the reality? Has meat consumption gone up or down over the past 50 years? Well, according to UN Food and Agriculture Organization data, meat production today is nearly five times higher than it was in the 1960s. That is down to two main factors: first, there are more people to feed today. Second, people around the world have become richer, which is associated with a rise in meat consumption. In a nutshell, there are more people in the world and more of those people can afford to eat meat. This is highlighted when you consider the countries that eat the most meat. For example, the United States, Australia, New Zealand and Argentina all have annual meat consumption levels of more than 100kg per person. In fact, most countries in Western Europe have annual meat consumption levels of between 80kg and 90kg per person, while individuals in lower-income nations eat considerably less meat. For example, annual meat consumption levels in Ethiopia, Rwanda and Nigerians are 7kg, 8kg and 9kg per person respectively. The bottom line is that meat is still a luxury in many countries today. So, despite the initiatives and the seeming shift to people consuming less meat, the reality is that meat consumption isn’t falling. One point that is worthy of note, however, is that meat eating habits are changing. For example, in the West, people are eating more poultry and less red meat (namely beef and pork). Have your meat eating habits changed in recent times? If they have, was it a conscious decision on your part? [Related reading: Major study finds eating processed meat raises risk of breast cancer]

How much fiber should you be eating to prevent disease?

15/01/2019

The health benefits of eating fiber have long been hailed, but how much fiber should we all be eating to prevent chronic disease and premature death? A new study reveals just that… Commissioned by the World Health Organization (WHO), the research is the culmination of a meta-analysis of observational studies and clinical trials that took place over almost 40 years. The results appear in the journal The Lancet. One of the objectives of the research was to help in the development of new guidelines for dietary fiber consumption, as well as discover which carbs protect us the most against noncommunicable diseases. So how much fiber should we be eating? Well, the research found that a daily intake of 25–29 grams of fiber is ideal. People who consumed this amount of fiber each day were 15–30 percent less likely to die prematurely from any cause and had a 16–24 percent lower incidence of stroke, coronary heart disease, type 2 diabetes, and colon cancer. The researchers also say that consuming more than 29 grams of fiber per day could lead to even more health benefits. Speaking about the findings of the study, Professor Jim Mann, of the University of Otago, in New Zealand, said: “The health benefits of fiber are supported by over 100 years of research into its chemistry, physical properties, physiology, and effects on metabolism. “Fiber-rich whole foods that require chewing and retain much of their structure in the gut increase satiety and help weight control and can favorably influence lipid and glucose levels. “The breakdown of fiber in the large bowel by the resident bacteria has additional wide-ranging effects including protection from colorectal cancer.” Fiber-rich foods include vegetables, whole grains, fruit, and pulses, such as beans, peas, lentils, and chickpeas. Are you consuming enough fiber?

Mediterranean diet Linked to healthy brain aging

03/01/2019

The New Year is here and for many that means attempting to stick to one or a bunch of resolutions. Eating more healthily, doing more exercise and quitting smoking will be at the top of the list for many people. If one of your goals for 2019 is eating more healthily, perhaps you should consider following a Mediterranean diet. While it varies depending on where you go, a Mediterranean diet, in a nutshell, is one that incorporates all of the healthy eating habits of people who live in countries bordering the Mediterranean Sea, including France, Greece, Italy and Spain - so more vegetables, fruits, beans, legumes, nuts, grains, cereals, fish, and unsaturated fats such as olive oil. And less meat and dairy foods. As well as being linked with better health, including a healthier heart, a Mediterranean diet also promotes healthy brain aging, according to new research. A recent study involving 116 healthy adults aged 65–75 years, conducted by the University of Illinois at Urbana–Champaign, found that participants who ate a Mediterranean diet performed better in memory, general intelligence, and executive function tests. “Our study suggests that diet and nutrition moderate the association between network efficiency and cognitive performance,” said Aron Barbey, a psychology professor at The University of Illinois.

Regular weigh-ins, simple tips help avoid Christmas weight gain

13/12/2018

Christmas Day is less than two weeks away and that means many of us will soon be gorging ourselves on all sorts of culinary delights. It’s a reality that will see a lot of people piling on the pounds this month ahead of the inevitable January fitness drive. But what if there was a simple way to limit the impact of Christmas feasting on our waistlines? A new study by the Universities of Birmingham and Loughborough in the UK suggests there is. According to the study involving 272 volunteers, regular home weigh-ins coupled with simple weight-loss tips can prevent people from putting on weight over the festive period. For the study, the volunteers were divided into two groups. One group weighed themselves regularly and were given dietary advice, including information on how many calories they needed to burn to negate Christmas food. The other group didn’t weight themselves and were only given a small amount of healthy lifestyle advice. The group that weighed themselves and had access to the additional information weighed 0.49kg less than the "comparison" group come the end of the study. Study lead author, Frances Mason, of the University of Birmingham's Institute of Applied Health Research, said “People gain a kilo of weight on average annually. Often this weight gain happens at Christmas, and is never fully lost. This could possibly be a factor driving the obesity epidemic.” In other words, by simply keeping track of your weight and understanding the impact the foods you are eating are having on your waistline, you stand a better chance of avoiding weight gain at a time of year that’s traditionally associated with piling on the pounds. [Related reading: Why being overweight increases your risk of cancer]

Could blocking a single gene be the key to curing obesity?

05/12/2018

According to the World Health Organization (WHO), obesity is a “global epidemic” that must be tackled if we are to prevent its ill effects. In the United States, nearly 40% of adults and 18.5% of children aged 2 to 19 are obese. Obesity is a major risk factor for type-2 diabetes, heart disease and some types of cancer. That’s why finding effective ways to treat the condition is paramount. But now scientists say they are on the verge of creating a pill that could make obesity a thing of the past - without the need for diet and exercise. Sounds too good to be true, right? Nevertheless, the team at Flinders University in South Australia say that they key to curbing obesity could lie in a single gene known as RCAN1. The team found that when RCAN1 was removed in mice and they were then fed a high fat diet, they did not gain weight. In fact, they could eat as much food as they wanted over a prolonged period of time, the researchers say. Damien Keating, Ph.D., professor of molecular and cellular physiology at Flinders, and leader of the research team, said blocking RCAN1 allows the body to transform unhealthy white fat into calorie-burning brown fat. Stunning pictures of the mice used for the trial highlight the difference when RCAN1 was blocked and when it wasn’t. The results of the research are published in the journal EMBO Reports.

Major study finds eating processed meat raises risk of breast cancer

04/10/2018

A major study has found that eating processed meat, like bacon and sausages, may raise the risk of breast cancer in women. According to the review of studies involving more than one million women, eating higher levels of processed meat could result in a 9% greater risk of developing breast cancer. The research by a team from Harvard University’s T H Chan School of Public Health reviewed 15 related studies. It supports previous findings by the World Health Organisation (WHO) which suggest processed meats cause cancer. However, while the study has identified a potential link between processed meat and breast cancer, there is no clear evidence to show these types of foods are actually the cause. Furthermore, as outlined by the study authors in the International Journal of Cancer, their findings only relate to processed meat, not red meat. Bacon, sausages, salami, ham, hot dogs and corned beef are all examples of processed meat. And while it is not fully known why these foods are associated with a greater risk of cancer, it is thought that preservatives, like salt, may react with protein in the meat turning it carcinogenic. But rather than eliminating processed meat from your diet completely, the advice is simply to cut down. At present, current NHS guidelines recommend eating no more than 70g of red and processed meat a day. If you’re eating more than that on a regular basis, maybe it’s time to make some dietary changes.

Low-carb diets could shorten life expectancy, study finds

21/08/2018

Diets that are low in carbohydrates, such as the Atkins Diet, have become increasingly popular among people wanting to lose weight. But while some swear that cutting carbs is the key to weight loss and a long, healthy life, a new study suggests it could actually shorten your life expectancy by up to four years. The 25-year study in the US found that moderate carbohydrate consumption and/or replacing meat with plant-based protein and fats is healthier than a low-carb diet. Based on questionnaires completed by some 15,400 people and published in The Lancet Public Health journal, the study found that individuals who got around half of their energy from carbohydrates had a slightly lower risk of death compared to people who had low and high card intakes. From the age of 50, people in the moderate carb group were expected to live, on average, for another 33 years, the researchers found. That’s four years more than the individuals in the extra low-carb group and 2.3 years more than the low-card group. Dr Sara Seidelmann, a cardiologist from Boston and leader of the study, said: “Low-carb diets that replace carbohydrates with protein or fat are gaining widespread popularity as a health and weight-loss strategy. “However, our data suggests that animal-based low carbohydrate diets, which are prevalent in North America and Europe, might be associated with shorter overall life span and should be discouraged. “Instead, if one chooses to follow a low carbohydrate diet, then exchanging carbohydrates for more plant-based fats and proteins might actually promote healthy ageing in the long term.” [Recommended reading: Serving food on smaller plates doesn't fool hungry people - study]

Cruciferous vegetables can help prevent bowel cancer

16/08/2018

It’s a widely accepted fact that cruciferous vegetables, like cauliflower, cabbage, broccoli and Brussels sprouts, are good for the gut, but scientists say they have now discovered why. The work by the team from the Francis Crick Institute, a biomedical research centre in London, focussed on the way cruciferous vegetables alter the lining of the intestines. As they are digested, anti-cancer chemicals, including indole-3-carbinol, are produced. Indole-3-carbinol changes the behaviour of stem cells in the lower bowel and the study involving mice showed it protected them from cancer – even mice whose genes put them at a very high risk of developing the disease. Speaking about the findings of the study, one of the researchers, Dr Gitta Stockinger, said: “Even when the mice started developing tumours and we switched them to the appropriate diet, it halted tumour progression.” Prof Tim Key, from Cancer Research UK, said: “Further studies will help find out whether the molecules in these vegetables have the same effect in people, but in the meantime there are already plenty of good reasons to eat more vegetables.” Interestingly, Dr Stockinger added that cruciferous vegetables should not be overcooked to get the most benefit. According to the charity Bowel Cancer UK, bowel cancer is the fourth most common cancer in the UK, affecting almost 42,000 people every year.

Serving food on smaller plates doesn't fool hungry people - study

31/07/2018

If you’re trying desperately to lose weight, you’ll know that diets are difficult. But did you also know that the old trick of using a smaller plate when you eat to reduce portion sizes also (apparently) doesn’t work? That’s the finding of a new study that analysed how tricking the brain with a smaller plate doesn’t work when someone is hungry. According to the study by researchers at Ben-Gurion University of the Negev (BGU), “plate size doesn’t matter as much as we think it does” – especially when people are food deprived. For the study, the results of which were published in the peer-reviewed journal Appetite, the researchers set to out to see if people could identify pizza portion sizes when they were placed on plates of differing sizes. They found that people who had not eaten for at least three hours prior to the test were more likely to identify the pizza portions on both smaller and larger plates than their counterparts who were not hungry. Interestingly, this only happened when applied to food, with both groups similarly inaccurate when asked to compare the size of black circles placed within different sized circles. The researchers say this shows that hunger plays a role in heightening the analytical abilities of individuals. "Over the last decade, restaurants and other food businesses have been using progressively smaller dishes to conform to the perceptual bias that it will reduce food consumption," says Dr. Ganel, head of the Laboratory for Visual Perception and Action in BGU's Department of Psychology. "This study debunks that notion. When people are hungry, especially when dieting, they are less likely to be fooled by the plate size, more likely to realize they are eating less and more prone to overeating later."

Omega-3 fish oil supplements provide little vascular health benefit

24/07/2018

Do you take supplements containing omega-3 fish oil in the belief they are helping to protect your heart? A new study suggests you could be wasting your money. Researchers from Cochrane analysed trials involving more than 100,000 people and discovered little proof that omega-3 supplements prevented heart disease. In fact, they say the chance of getting any benefits from such supplements is one in 1,000. However, despite this, the researchers still maintain that eating oily fish as part of a healthy diet is beneficial. Indeed, NHS guidelines state that people should try to eat two portions of fish each week, one of which, ideally, should be oily fish such as mackerel, salmon or fresh tuna. This is so they get enough “good” fats. Speaking about the findings of the research, Prof Tim Chico, a cardiologist from Sheffield University, said: “There was a period where people who had suffered a heart attack were prescribed these on the NHS. This stopped some years ago. “Such supplements come with a significant cost, so my advice to anyone buying them in the hope that they reduce the risk of heart disease, I'd advise them to spend their money on vegetables instead.” Dr Lee Hooper, from the University of East Anglia, said: “The most trustworthy studies consistently showed little or no effect of long-chain omega-3 fats on cardiovascular health.” Nevertheless, Dr Carrie Ruxton from the UK’s Health and Food Supplements Information Service said supplements containing omega-3 can still play an important role for people who don’t eat oily fish – especially as omega-3 also benefits the brain, eyes and immune function.

Eating nuts regularly could improve a man's sperm quality

05/07/2018

A new study suggests that eating nuts regularly can improve both a man’s sperm count and the quality of the sperm produced. Experts say the finding is significant given that sperm counts across the Western world are in decline, a reality that’s been attributed to pollution, smoking and diet. At present, around one in seven couples have difficulty getting pregnant and figures show that 40-50% of infertility cases are attributable to men. For the study, scientists randomly split 119 healthy men between the ages of 18 and 35 into two groups. One group had 60 grams (2oz) of nuts added to their normal diet each day, while the other continued to eat as they always had done. The group that had the nuts added to their diet were found to have improved sperm – 14% greater count, 4% better vitality, 6% better motility (movement) and 1% better morphology (shape and size) – all of which are considered by the World Health Organisation (WHO) to be measures of  sperm quality. Dr Albert Salas-Huetos, from the Universitat Rovira i Virgili in Spain, who led the study, said: "Evidence is accumulating in the literature that healthy lifestyle changes such as following a healthy dietary pattern might help conception”. The results of the study were recently presented at the annual meeting of the European Society of Human Reproduction and Embryology in Barcelona.

Healthy but obese women still at increased risk of CVD

31/05/2018

Have you ever encountered someone who calls themself ‘fat but fit’? It’s not uncommon to meet people who are clearly overweight, yet not perturbed by their situation because they consider themselves to be fit and healthy. However, a large study conducted in America has found that women who are overweight or obese but otherwise healthy are still at an increased risk of cardiovascular disease (CVD). For the study, researchers from the German Institute of Human Nutrition Potsdam-Rehbruecke tracked the health of some 90,257 women in the US over a 30-year period. They found that women who were overweight or obese, but had none of the typical cardiovascular risk factors, such as high blood pressure, excess cholesterol and diabetes, were 20% and 39% more likely to develop cardiovascular disease than their normal weight and metabolically healthy peers. Speaking about the findings of the study, Prof Matthias Schulze, who led it, said: "Our large cohort study confirms that metabolically healthy obesity is not a harmless condition, and even women who remain free of metabolic diseases for decades face an increased risk of cardiovascular events.” The study also found women who were of normal weight, but metabolically unhealthy, were over two-times more likely to develop cardiovascular disease than their peers of the same weight who were metabolically healthy. Jeremy Pearson, associate medical director at the British Heart Foundation, added: "This large scale study confirms that obesity, even if unaccompanied by other warning signs, increases risk of cardiovascular disease in women."

Too much fast food could make it harder to get pregnant

08/05/2018

Women who regularly eat fast food and don’t consume enough fruit are more likely to experience problems trying to conceive, a study suggests. The study of 5,598 women in Australia, New Zealand, the UK and Ireland, which was published in the journal Human Reproduction, found that women who ate fast food four or more times a week took almost a month longer to get pregnant than those who rarely or never ate it. Furthermore, women who regularly eat junk food were also less likely to conceive within a year. Women who had eaten fruit three or more times a day, on average, conceived half a month quicker than those who had eaten it less than one to three times a month. While experts say the study suggests a good diet boosts the chances of getting pregnant, some limitations - including the participants having to remember what they’d eaten in the month before conceiving - have been highlighted. Prof Claire Roberts, from the University of Adelaide, Australia, who led the study, said: "These findings show that eating a good quality diet that includes fruit and minimising fast food consumption improves fertility and reduces the time it takes to get pregnant." [Related reading: UK hit by weight-related fatty liver disease epidemic]  

Intermittent fasting not only good for significant weight loss, may have additional health benefits

03/05/2018

Intermittent fasting is something that’s become more popular in recent times with people looking to shed a few kilograms and now new research shows that it could actually have ‘profound health benefits’. In addition to helping people lose weight, intermittent fasting, according to the research by a team at the University Of Florida College Of Medicine, can also slow down aging and disease. The human body runs on glucose, which it gets from the food we eat. However, periods of fasting force the body to find an alternative energy source. Our bodies begin to convert body fat into fatty acids which are easily absorbed by our blood. Molecules called ketones are then produced from the fatty acids, which our bodies use as a new source of energy. Stephen Anton, a researcher from the University Of Florida College Of Medicine in Gainesville, refers to this process as "flipping the metabolic switch". He says "this switch can happen after a certain period of time fasting. It's a gradation in which your metabolism overtime shifts to use higher and higher amounts of ketones for energy”. Having reviewed numerous studies that focused on the mechanisms and benefits of intermittent fasting, Anton and his team discovered that not only did intermittent fasters experience significant weight loss, they did not lose lean tissue, such as organ tissue, muscular tissue, and bone tissue, which allow our bodies to continue functioning well and could help prolong our lifespans.

Some Chinese takeaway meals contain as much salt as five Big Macs

14/03/2018

Do you know how much salt you consume on a daily basis? If you’re a fan of Chinese takeaway meals, it could be far more than you ever imagined, according to a campaign group. For their research, Action on Salt analysed more than 150 Chinese takeaway dishes from both restaurants and supermarkets. They found that most contained way too much salt – almost half the average person’s recommended daily amount of salt (6g) in some cases. When it comes to the saltiest meals, dishes like beef in black bean sauce topped the list. If a person adds a portion of egg fried rice, their salt intake could rise by as much as 5.3g in one meal. In fact, one portion of beef in black bean sauce and a side of vegetable noodles was found to contain as much salt as five Big Macs. While it’s vastly more difficult with Chinese takeaway food, Action on Salt recommends people check the nutritional information on supermarket bought food to see how much salt it contains. The campaign group says that many Chinese takeaway meals should carry health warnings because of the amount of salt they contain. Too much salt can lead to increased blood pressure, which can in turn increase a person’s risk of heart attack and stroke. Public Health England (PHE) has been encouraging the food industry to reduce the amount of salt found in food. Dr Alison Tedstone, chief nutritionist for PHE, said: "A loaf of bread has 40% less than it used to. "However, some products are still too high in salt and we know this can be reduced further. "We've been very clear with the food industry on the importance of meeting the 2017 salt targets. "We'll report on their progress this year and on any necessary advice to government on the next steps." So, the next time you reach to grab your favourite Chinese takeaway meal from the supermarket, just have a quick read of the nutritional information. What you discover might just make you choose something else instead.  

Public Health England tells Britain to 'go on a diet'

08/03/2018

As part of a new obesity drive, Public Health England is telling people in the UK to “get on a diet” and wants to cut portion sizes of some of the nation’s most popular foods. Pizzas, ready meals, takeaways and processed meat will all be targeted as part of the initiative to cut calorie consumption by 20% by 2024. In addition, the government agency has called on the food industry to start using healthier ingredients and encourage people to choose lower calorie foods. The drive to eat healthier will not only improve the health of the nation, but also reduce the burden on the NHS associated with obesity-related illnesses. Public Health England says the cost per year of obesity to the NHS is £6 billion. Combined with the sugar reduction programme that came into effect last year and the sugary drinks levy which comes into force next month, this new initiative will also help reduce the number of calories consumed by children in the UK. Talking about the new steps, Public Heath England chief executive Duncan Selbie said: "Britain needs to go on a diet. Children and adults routinely eat too many calories, and it's why so many are overweight or obese." Food manufacturers, supermarkets, takeaways and fast-food outlets have all been told they need to reduce the calories in the foods such as crisps and savoury snacks, cooking sauces and dressings, ready meals and takeaways, and food-to-go like sandwiches. If these companies do not listen to PHE, the agency said it would be willing to ask the government to legislate. Guidelines suggest that women eat no more than 2,000 calories a day, while men should limit themselves to 2,500.

UK adults underestimating how many calories they’re consuming

22/02/2018

Do you know how many calories you consume on a daily basis? If you had to estimate, how accurate do you think you would be? An analysis of Office of National Statistics data shows that one-third of people in the UK underestimate how many calories they are eating. The research shows that British men eat more than 3,000 calories a day, but claim to only eat 2,000, while women say they eat around 1,500, when, in fact, it’s closer to 2,500. The NHS says the recommended daily calorie allowance for people who want to maintain their weight is 2,500 for men and 2,000 for women. So why the discrepancy? It’s actually a pitfall that hampers many diet-related surveys. Many people simply forget to list everything they’ve eaten, while others deliberately underestimate because they know they are part of a poll. Public Health England guidelines state that people should be looking to consume around 400 calories for breakfast, 600 for lunch and then 600 for dinner, which leaves some extra for drinks and snacks throughout the day. Eating out is one of the hardest factors for people trying to count calories. That’s because restaurants rarely list calorie information and portion sizes vary from establishment to establishment. The bottom line is that unless you are specifically counting calories, chances are you’re underestimating your daily consumption. Why not give it a try – estimate how many calories you’re consuming and then make a conscious effort to count them, you might just be surprised at the difference.

Common amino acid found in asparagus linked to spread of breast cancer

08/02/2018

The food you eat could influence the growth rate and spread of cancer, a new study has found. According to scientists at the Cancer Research UK Cambridge Institute, breast tumours in mice struggled to grow without the dietary nutrient asparagine, which is found in asparagus, poultry, seafood and many other foods. When mice with an aggressive form of breast cancer were placed on a low-asparagine diet or given drugs to block the amino acid, their tumours struggled to spread. Scientists hope to be able to take advantage of cancer’s so-called culinary addictions in the future and develop new treatments based on certain foods. Prof Charles Swanton, Cancer Research UK's chief clinician, said: "Interestingly, the drug L-asparaginase is used to treat acute lymphoblastic leukaemia, which is dependent on asparagine. "It's possible that in future, this drug could be repurposed to help treat breast cancer patients." But before you ban asparagus from your home, be aware that more research is needed, including trials in humans. Also, because asparagine is present in so many foods, it is almost impossible to avoid. Baroness Delyth Morgan, the chief executive at Breast Cancer Now, said people should not drastically alter their diets as a result of this research. "We don't recommend patients totally exclude any specific food group from their diet without speaking to their doctors,” she said.

Weight loss can lead to type 2 diabetes reversal

06/12/2017

A “watershed” trial involving almost 300 people has seen nearly half the participants reverse their type 2 diabetes in just five months. Trial participants followed a low-calorie diet of soups and shakes for up to five months, which led to massive weight loss. One participant, Isobel Murray, 65, who had weighed 15 stone, lost over four stone (25kg) and now no longer needs diabetes pills. "I've got my life back," she says. Prior to the trial, Isobel’s blood sugar levels were too high and her diabetes medication was being increased on a regular basis. So, she went on to the all-liquid diet for 17 weeks and gave up both cooking and shopping. She didn’t even eat meals with her husband during the trial. Following the trial, 46% of participants were in remission a year later and 86% who lost 15kg (2st 5lb) or more put their type 2 diabetes into remission. Just 4% went into remission with the other best treatments currently used. Speaking about the results of the trial, Prof Mike Lean, from Glasgow University, said: "It's hugely exciting. We now have clear evidence that weight loss of 10-15kg is enough to turn this disease (diabetes) around.” The charity Diabetes UK says the trial is a landmark and has the potential to help millions of patients. The findings of the trial, which was conducted by the universities of Newcastle and Glasgow in the UK, were published in The Lancet and presented at the International Diabetes Federation.

Indulgent grandparents could be damaging their grandchildren's health

16/11/2017

It’s natural for grandparents to dote on their grandchildren and give them sweet treats whenever they see them. But new research suggests this and other influences could have a negative impact on their grandchildren’s health. For the research, the team from the University of Glasgow analysed 56 different studies which included data from 18 countries, including the UK, US, China and Japan. They focused on the influence of grandparents who were significant in their grandchildren’s lives, but who weren’t necessarily primary caregivers. Three areas of influence were considered: diet and weight, physical activity and smoking. When it came to their grandchildren’s diet and weight, grandparents were found to have an adverse impact, with many studies highlighting how they feed their grandchildren high-sugar or high-fat foods - often in the guise of a treat. The researchers also found that grandchildren were perceived to get too little exercise while under the supervision of their grandparents. However, this did depend on whether the grandparents were physically active themselves or not. Furthermore, smoking around grandchildren became an area of conflict between parents and grandparents, with the latter often smoking while their grandchildren were present, even though they had been asked not to. Talking about the findings of the study, lead researcher Dr Stephanie Chambers said: "While the results of this review are clear that behaviour such as exposure to smoking and regularly treating children increases cancer risks as children grow into adulthood, it is also clear from the evidence that these risks are unintentional. "Given that many parents now rely on grandparents for care, the mixed messages about health that children might be getting is perhaps an important discussion that needs to be had."

Breakthrough peanut allergy treatment still effective after four years

25/08/2017

When it comes to food allergies, peanut allergies are one of the most deadly. But hope may be on the horizon for people who are allergic to peanuts after a new study has revealed how a particular oral treatment can be effective for up to four years after it is administered. For the study, children were given a probiotic with a peanut protein every day for 18 months. One month later, the children were tested to see whether they could tolerate peanuts without displaying any allergic symptoms – 80% could. Then, after four years, the children were tested again. This time 70% were still able to eat peanuts without showing any allergic symptoms. Lead researcher Prof Mimi Tang, from the Murdoch Children’s Research Institute in Melbourne, said: "The importance of this finding is that these children were able to eat peanuts like children who don't have peanut allergy and still maintain their tolerant state, protected against reactions to peanuts”. She added that this is the first time a peanut allergy treatment has proved effective for this long. The Australian research team now wants to determine whether the treatment has improved the children’s quality of life. More than 250 million people worldwide are thought to have peanut allergies – a figure that has more than trebled in the last 20 years alone.

Coconut oil no better than beef fat or pork lard

22/06/2017

Coconut oil is higher in saturated fat than butter, beef dripping and pork lard, and can increase “bad” (LDL) cholesterol. That’s the stark new warning contained in updated advice from the American Heart Association (AHA). A diet high in saturated fat can lead to clogged arteries and an increased risk of heart disease and stroke. Despite coconut oil being commonly sold as a health food and a “healthier” alternative to other saturated fats, the AHA says there are no good studies to support this. In fact, 82% of the fat found in coconut oil is saturated, which is higher than butter (63%), beef dripping (50%) and pork lard (39%). And studies show that like other saturated fats, coconut oil can increase “bad” cholesterol. The AHA says people should watch how much saturated fat they eat and replace some of it with unsaturated vegetable oils, like olive oil and sunflower oil. Dr Frank Sacks, lead author of the AHA advice, said: "We want to set the record straight on why well-conducted scientific research overwhelmingly supports limiting saturated fat in the diet to prevent diseases of the heart and blood vessels." Nevertheless, saturated fat is still an essential part of a healthy, balanced diet and shouldn’t be completely cut out, just limited. In the UK, Public Health England advises that men should eat no more than 30g of saturated fat a day and women no more than 20g a day.

How waist size can predict cancer risk

25/05/2017

Men with waists over 40 inches and women with waists over 35 inches are at greater risk of certain cancers, as well as type 2 diabetes. That’s the message to come out of a study by scientists at the International Agency for Research on Cancer (IARC), which is an arm of the World Health Organisation. According to Dr Heinz Freisling, the lead author of the study published in the British Journal of Cancer, a person’s waist measurement is as good at predicting cancer risk as their body mass index (BMI). His advice is for people to know their waistlines. “You only need to put a tape measure around your belly button. This is easy to do and can give a person an indication of whether their risk for specific cancers is increased or not – for instance pancreas or liver cancer which are known to be related to increased body fatness or obesity,” he said. Being overweight or obese is the single biggest preventable cause of cancer after smoking and is linked to 13 types of cancer, including bowel, breast and pancreas. The study combined data from about 43,000 participants who had been followed for an average of 12 years and more than 1,600 people were diagnosed with an obesity-related cancer.

People with non-O blood at greater risk of heart attack

04/05/2017

People with non-O blood could be at greater risk of stroke and heart attack, research suggests. Scientists say it's because A, B and AB blood contains higher levels of a blood-clotting protein. The research, which was presented at the 4th World Congress on Acute Heart Failure, analysed studies involving 1.3m people. It found that people 15 in 1,000 people with non-O blood suffered a heart attack, compared to 14 in 1,000 people with O blood. While these figures don't sound that startling at first, when applied to a whole population the numbers become more important. It is hoped that the findings will help doctors better identify who is at risk of developing heart disease. However, Dr Mike Knapton, associate medical director at the British Heart Foundation, said the findings would not have a large impact on the current advice issued by the charity. "Most of a person's risk estimation is determined by age, genetics (family history and ethnicity) and other modifiable risk factors including diet, weight, level of physical activity, smoking, blood pressure, cholesterol and diabetes. "People with a non-O blood group type - AO, BO and AB - need to take the same steps as anyone wanting to reduce their CVD risk." So regardless of your blood type, the advice remains the same: improve your diet, weight, level of physical activity and don't smoke. In addition, manage blood pressure, cholesterol and diabetes too. There's nothing you can do about your blood group, but you can make positive lifestyle changes to reduce your risk of heart attack and stroke.

Dairy-free diets a 'ticking time bomb' for bone health, warns charity

13/04/2017

There are all sorts of diets out there, but a certain type in particular could be a "ticking time bomb" for young people's bone health, according to a leading charity in the UK. Dairy-free diets, which see the amount of dairy consumed significantly reduced or cut out completely, says the National Osteoporosis Society, are putting people's health at risk. That's because milk and other dairy products are important sources of calcium, which boosts bone strength. A survey by the charity found that a fifth of under-25s are cutting out or reducing dairy in their diet. Furthermore, its findings suggest many young people are seeking and following dietary advice they find online. While some of this advice can be good, the charity warns that some individuals are restricting what they eat too much. Prof Susan Lanham-New, head of nutritional sciences at the University of Surrey and clinical advisor to the National Osteoporosis Society, said: "Diet in early adulthood is so important because by the time we get into our late 20s it is too late to reverse the damage caused by poor diet and nutrient deficiencies and the opportunity to build strong bones has passed." In the UK, the Department of Health recommends 700mg of calcium a day for adults and pregnant women, but that increases to 1,000mg a day for boys and girls between 11 and 18. Calcium is the most abundant mineral found in the human body and helps to regulate metabolism, promote healthy bones and teeth, controls muscle contraction and blood clotting, and transmits information via the nervous system.

Marmite yeast extract may help to boost brain function - study

06/04/2017

The slogan for British yeast extract Marmite is 'You either love it or hate it'. And while many people in America may not have even heard of it, a new study will come as good news for lovers of the popular food stuff. A by-product of beer brewing, Marmite is a sticky, almost black coloured food paste with a very distinctive, powerful, salty flavour. People in the UK usually eat it in sandwiches or on toast. According to a study conducted by researchers from the University of York in the UK, Marmite could help boost brain function. The study found that participants who ate one teaspoon of Marmite every day displayed a reduced response to visual stimuli - an indicator of increased levels of gamma-aminobutyric acid (GABA) in the brain. Simply put, GABA "clams" the human brain and helps restore the optimal balance of neuronal activity required for healthy brain functioning. Low GABA levels have previously been linked with anxiety, depression, epilepsy, and autism. That's why researchers have been looking at ways to increase GABA levels in the brain. Speaking about the findings of the research, Senior author Dr. Daniel Baker, of the Department of Psychology at York, said: "Since we've found a connection between diet and specific brain processes involving GABA, this research paves the way for further studies looking into how diet could be used as a potential route to understanding this neurotransmitter." The study serves as a great reminder of how diet has the ability to alter brain processes.

Night-time toilet trips linked to salt intake - study

28/03/2017

Do you ever wake up in the middle of the night with an urge to go to the toilet? A new study from Japan suggests that it could be linked with the amount of salt you consume. For the study, researchers from Nagasaki University analysed more than 300 volunteers. They found that a reduced salt intake caused people to urinate less in the middle of the night. The problem - called nocturia - is thought to mainly affect people over the age of 60. It disrupts sleep and can have a significant impact on people's lives. Presenting their findings at the European Society of Urology congress in London, the researchers said that a sensible diet could help to improve the symptoms of nocturia. During the study, patients with a high salt intake were advised to cut back. Instead of needing the toilet more than twice a night their trips dropped to just one. As a result, their quality of life also improved. To add extra weight to the study's findings, 98 volunteers were asked to eat more salt than normal. They found they went to the toilet more often at night time. Study author Dr Matsuo Tomohiro said that while larger studies were needed to confirm the link, the results could still offer help for older people. "This work holds out the possibility that a simply dietary modification might significantly improve the quality of life for many people," he said.

New drug could help one in five breast cancers

16/03/2017

A new type of breast cancer treatment could help up to 10,000 women in the UK, according to scientists. Historically, biological therapies have been used to help fight rare, inherited genetic errors which can lead to cancer, such as the BRCA one actress Angelina Jolie carries. However, a new study has found that such therapies could also help women diagnosed with breast cancer who do not have these genetic errors. The Wellcome Trust Sanger Institute study suggests that such therapies could be effective in one in five breast cancers (20%). For comparison, the number of women who develop cancer and have faulty BRCA genes is 1 to 5%. For the study, the researchers analysed the genetic make-up of breast cancer in 560 different patients. They found that a significant proportion had "mutational signatures" that were very similar to faulty BRCA. Therefore, given the close similarities, these cancers could also potentially be treated with biological therapies. Clinical trials are now being called for to confirm the researchers' theory. Baroness Delyth Morgan, from Breast Cancer Now, said the initial results were "a revelation". "We hope it could now lead to a watershed moment for the use of mutational signatures in treating the disease," she said. Regular exercise, a healthy diet, avoiding cigarettes, limiting alcohol intake and maintaining a healthy weight can all help to reduce a woman's lifetime risk of developing breast cancer.

People are getting fatter, but fewer than ever are trying to lose weight - study

09/03/2017

Despite the fact the number of people who are overweight or obese has risen over the past 30 years, fewer people are actually attempting to shed weight, according to a new study, the findings of which were published in JAMA. Around two thirds of the adult population in the United States are obese or overweight, putting them at increased risk of heart disease, stroke, diabetes, and other chronic diseases. However, new research has found that even though there has been a significant rise in the number of people who are overweight or obese since the 1980s, the percentage of U.S. adults who are trying to lose weight has fallen. For their research, study co-author Dr. Jian Zhang and her colleagues from the Georgia Southern University, analysed the data of 27,350 U.S. adults aged between 20 and 59 years. The analyses revealed that the rates of overweight and obesity increased by 13%, from 53% in 1988-1994 to 66% in 2009-2014. Furthermore, the researchers also found that the percentage of people who attempted to lose weight over the same period actually dropped by 7%, from 56% in 1988-1994 to 49% in 2009-2014. At present, people are deemed to be overweight or obese depending on their body mass index (BMI). A BMI of 25 to under 30 is considered overweight, while a BMI of 30 or above is considered obese. A healthy diet and regular physical activity are proven to help curb weight gain, which is why we should all make a conscientious effort to watch what we eat and exercise more. [Recommended read: BMI Wrongly Labelling People Unhealthy, Finds New Research]

A Mediterranean diet with lashings of virgin olive oil may help protect the heart

14/02/2017

A Mediterranean-inspired meal with lashings of virgin olive oil may help to protect your heart, according to new research. Cholesterol is carried around the blood by two different types of molecules called lipoproteins: low-density lipoprotein (LDL) and high-density lipoprotein (HDL). You'll most likely know LDL as "bad cholesterol". That's because high levels of LDL can lead to plaque building up in arteries, which can result in heart disease and stroke. HDL, on the other hand, the so-called "good bacteria", actually absorbs cholesterol and carries it to the liver where it is flushed from the body. That's why having high levels of HDL can reduce your risk of heart disease and stroke. Previous research has shown that the Mediterranean diet can protect against the development of heart disease as it improves the lipid profile of HDLs. The new research - which was led by Montserrat Fitó, Ph.D., coordinator of the Cardiovascular Risk and Nutrition Research Group at the Hospital del Mar Medical Research Institute in Barcelona, Spain - aimed to determine whether eating a Mediterranean diet rich in virgin olive oil or nuts over a long period of time would improve the beneficial properties of HDL in humans. Fitó's team randomly selected a total of 296 people who already had a high risk of heart disease and were participating in a separate study. They had an average age of 66 and were assigned to one of three diets for a year. They found that the individuals on the Mediterranean diet enriched with virgin olive oil had improved HDL functions. "Following a Mediterranean diet rich in virgin olive oil could protect our cardiovascular health in several ways, including making our 'good cholesterol' work in a more complete way," said Fitó.

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