Chicago, Gatra.com – Falling asleep with an illuminated TV or other light can confuse your metabolism and cause weight gain and even obesity. Studies from the National Institutes of Health prove that too much exposure to light at night can cause health risks.
"In evolution, we should sleep at night in a dark place. This is much more important than people perceive for various health reasons." said Dale Sandler, a scientist at the National Institute of Environmental Health Sciences, part of the National Institutes of Health, reported by AP News.
According to Sandler, the ingestion of black light every night helps maintain a 24-hour biological clock that regulates metabolism, sleep hormone, blood pressure and other functions of the body.
The researchers analyzed health and lifestyle data from about 44,000 American women enrolled in ongoing studies looking for clues about the causes of breast cancer. The analysis focused on sleep data, moderate exposure and weight gain during the study, but not on breast cancer.
The results were published in the Journal of the American Medical Association (JAMA), women in the study underwent medical examinations and completed health and lifestyle questionnaires when they enrolled and then periodically.
Those who report sleeping at night with a connected television or lights are more likely to get at least 11 pounds of body weight. They are also about 30% more likely to be obese. A similar possibility, according to Sandler, will be found in men.
Sandler said he believes that weight gain is not due to activities such as night snacks because the analysis took into account other variables that could cause weight gain, such as diet, physical activity, and sleep duration.
Phyllis Zee, a sleep disorders and circadian rhythm specialist at Northwestern University in Chicago, said the study is important because it highlighted behaviors that could be easily altered to reduce the risk of weight gain.
"Light with the right time limit should be considered as part of a healthy lifestyle along with exercise and good nutrition," he said.
Publisher: Bernadetta Febriana