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Weight gain speeds up lung function decline in older adults

03/03/2020

Gaining weight in later years has a detrimental impact on lung health, a new study suggests. People’s lungs naturally deteriorate as they age and lose functionality as the years go by. But now new research has linked moderate or significant weight gain to an even sharper decline in lung health. According to the study of 3,700 individuals in Europe and Australia, who were recruited between the ages of 20 and 44, and were studied for 20 years, people who gained weight throughout the course of the study – regardless of whether they were a healthy weight or overweight/obese to begin with – had accelerated lung function decline. Furthermore, overweight/obese individuals who lost weight during the study saw their lung functionality decline slow. Publishing their findings in the journal Thorax, the researchers said large amounts of fat in the abdomen and chest can limit the space lungs have when people inhale. It was also suggested that fat produces inflammatory chemicals that can reduce the diameter of airways and damage lungs. Speaking about the findings of the research, study leader Judith Garcia Aymerich, head of the non-communicable diseases and environment program at Barcelona Institute for Global Health (ISGlobal), said: “Although previous research has shown that weight gain is linked to lung function decline, ours is the first study to analyze such a varied population sample over a longer period of time.”  

Fat builds up in overweight people’s lungs

22/10/2019

Researchers have found fat in overweight and obese people’s lungs. It’s the first time such a discovery has been made and could provide important clues as to why overweight and obese people have an increased risk of asthma. For the research, a team from Australia analysed lung samples from 52 deceased individuals. They found the amount of fat present increased in line with Body Mass Index (BMI). Being overweight/obese is already linked to having asthma, but it was previously thought that excess weight pressing on the lungs was the main reason for this. However, the Australian researchers say fatty tissue in the walls of airways takes up space and causes inflammation, which can lead to wheezing and asthma. Speaking about the findings of the research, which are published in the European Respiratory Journal, Dr Peter Noble from the University of Western Australia said: “We’ve found that excess fat accumulates in the airway walls where it takes up space and seems to increase inflammation within the lungs. “We think this is causing a thickening of the airways that limits the flow of air in and out of the lungs, and that could at least partly explain an increase in asthma symptoms.” Experts say that more research is now needed to find out whether the build-up of fatty tissue could be reversed through weight loss. In the meantime, asthma patients should be supported to achieve a healthy weight.

Bacteria in babies’ noses linked to faster common cold recovery

04/12/2018

Nobody likes to see a baby with a cold. After all, runny noses and a cough are bad enough when you’re fully grown, let alone when you’re still just an infant. But new research suggests that babies who are born with lots of different bacteria in their noses are more likely to recover quicker from their first cold and could help bolster the way we deal with colds going forward. The findings of the research are interesting because the common cold is caused by a virus, yet it would appear that bacteria found in the respiratory tract do play a part when it comes to recovery. Indeed, the researchers from the University Children's Hospital of Basel found that babies who have lots of different bacteria living in their nose tend to recover more quickly from their first respiratory virus. Moreover, babies with fewer different types of bacteria take longer to recover. Prof Tobias Welte, President of the European Respiratory Society, said: “There is an association between respiratory symptoms in babies in the first year of life and the development of asthma by school age. “We do not yet fully understand this link but the bacteria living in the upper airways could play a role.” He also welcomed further research to help determine the relationship between bacteria, respiratory infections and long-term lung health.

Cleaning products as bad as 20-a-day cigarette habit for women – study

20/02/2018

Using cleaning products regularly can be as bad for your lungs as smoking 20 cigarettes a day, a new study has found. Tracking people with an average age of 34 over a 20-year period, scientists at Norway’s University of Bergen found that women who regularly used cleaning products had lung function decline equivalent to those who smoked 20 cigarettes a day. For the study, the researchers measured the lung function of participants by testing the amount of air they were able to forcibly breathe out. They then examined the results alongside surveys answered by the study participants. They found that women who regularly used cleaning products had noticeably decreased lung capacities, as well as increased rates of asthma. Prof Cecile Svanes, who led the team from Bergen, said: "We feared that such chemicals, by steadily causing a little damage to the airways day after day, year after year, might accelerate the rate of lung function decline that occurs with age". So what should you be using instead of cleaning products? According to the scientists, microfiber cloths and water should be “enough for most purposes”, while keeping your home ventilated and using liquid cleaners, not sprays, could also help lessen the impact of cleaning products.

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