Sleeping is not active, weight problems... JamA sub-issue data of 120,000 people revealed that fat people sleep less

In recent years, many people have started using devices such as bracelets and smartwatches to focus on their health data, such as exercise time and intensity, steps and sedents per day, heart rate changes, and sleep time.
big data generated by these wearable devices can actually help scientists conduct research that is difficult to do with traditional clinical methods, providing us with new insights into health.
recently, scientists at the Scripps Research Institute and the University of California, San Diego analyzed anonymous data from more than 120,000 Fitbit bracelet users.
two-year sleep monitoring data showed that obese adults had less sleep and less regular sleep time than those who were not fat.
according to the paper, published in the Journal of the American Medical Association, the researchers divided user data based on body mass index (BMI), which clinically defines adults with a BMI of more than 30 as obese.
obese people sleep an average of 6.62 hours a night, while those with a BMI below 30 sleep an average of 6.87 hours a night, a difference of 15 minutes.
, the findings suggest that maintaining a stable sleep pattern may be as important as sleeping longer.
Stuti Jaiswal, one of the lead authors of the study, said: "We have observed from these data that some people sleep almost as long every day, while others sometimes sleep more and sometimes less.
analysis, users in the high BMI group had a more fixed amount of sleep per night.
in some small studies in the past, scientists have noted the relationship between weight and sleep, and this study supports big data.
, when conducting sleep studies in clinics, the observation time was much shorter and it was not representative of the participants' daily lives.
the traditional sleep habits questionnaire is more subjective, and therefore prone to errors.
, one of the lead authors of the study and an AI expert at Scripps, said.
, of course, as a retrospective study, the results do not directly explain the causal link between sleep and obesity.
, however, the researchers note that the results provide scientific evidence consistent with previous studies that suggest that lack of sleep and obesity constitute a vicious circle: lack of sleep promotes obesity, which tends to worsen sleep quality.
: stuti Jaiswal et al., (2020) Association of Sleep Duration and Variability With Body Mass Index. JAMA Intern Med. DOI: 10.1001/jamainternmed.2020.2834 Retrieved Oct. 13, 2020, from