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.”
Are you a night owl or a morning person? A new study suggests that it could make a big difference to your health and it’s not good news for late risers. According to the paper authored by Dr Kristen Knutson and Professor Malcolm von Schantz, of Northwestern University (Chicago) and the University of Surrey (UK) respectively, night owls have an increased risk of early death, psychological disorders and respiratory illness than people who are, so to speak, up with the lark. The paper backs up previous research that suggests people who regularly go to bed late are more likely to suffer ill health. Over a six-year period, night owls were found to have a 10% greater risk of death than larks, according to the paper. This finding held true even after adjusting for expected health problems in people who go to bed late, such as metabolic dysfunction and heart disease. Using data extracted from the UK Biobank, a data store containing medical and genetic information relating to some 500,000 people aged 40 to 69 from across the UK, the researchers were able to determine the effect a lack of sleep has on individuals. While night owls often make up for their lack of sleep during the week by staying in bed longer at weekends – referred to as “social jet lag” - it is seemingly not enough to combat the potential health problems they face. Commenting on the findings of the research, Dr Knutson said that “night owls trying to live in a morning lark world may have health consequences for their bodies. They shouldn’t be forced to get up for an 8am shift. Make work shifts match people’s chronotypes. Some people may be better suited to night shifts.” Being a night owl was also associated with psychological stress, lack of sleep, lack of exercise, eating at the wrong time, and drug or alcohol use. So, if you're someone who regularly goes to bed late and doesn't get enough sleep during the week, maybe it's time to change your habits.