Sleeping in the light, like watching television, is unhealthy. That is known. The study on women is now exploring whether artificial light when sleeping can actually lead to weight gain.
Obesity by sleeping in artificial light
Researchers at the Triangle Park Research Center in North Carolina now have one in the journal JAMA Internal Medicine a published study with women found that artificial light can make you fat at night and even lead to obesity ("obesity").
Obesity is often the cause of chronic diseases
About 23 percent of women are obese, according to the World Health Organization (WHO). Overweight and obesity are crucial factors for chronic diseases such as diabetes and cancer. Not only do unhealthy diets and the lack of exercise in American researchers see the causes of obesity: "One night exposure to artificial light (ALAN – Artificial light at night) can contribute to the pandemic of obesity. "
Years of investigation with surprising results: ALAN can make you fat!
Over a five-year period, approximately 44,000 women, aged 35-74, were questioned by scientists at the National Institutes of Health. For the past two years, they have evaluated the data: Findings show that watching TV and artificial light when sleeping in women is associated with an increased risk of weight gain and obesity.
Weight gain by five pounds
Compared to participants in completely darkened rooms, they slept with ALAN five pounds up to ten percent of BMI value also. Animal studies to date also show that nighttime exposure can adversely affect the day-to-night rhythm.
Disturbance of day and night rhythm
The so-called "clock genes" were suppressed in the studio by continuous light irradiation and disrupted the "circadian 24-hour rhythm." As a result, rodents also changed their eating behavior – the result increased weight.
Consequences: stress hormones and more time to eat
Also ALAN from the environment, such as street lights and neon signs, led to the suppression of the sleep hormone "melatonin". For example, the stress hormone "glucocorticoids" is produced for these purposes.
"Shorter sleep also adds more waking time, leaving more time for eating or increasing energy," said Dale Sandler.
Obesity and obesity prevent darkness
To prevent overweight and obesity, women should adhere to healthy lifestyle habits, such as diets rich in vitamins, as well as being physically active. These components can lead to low levels of stress.
The TV and night light as well as the smartphone should be displayed before bed. Sleeping as calmly as possible, thanks to the dark room, is the best prerequisite for starting the next day in recovery and fitness.
Why you should no longer sleep on your right
Not only the duration of sleep, but also the position of sleep is important for a healthy life. Experts have now proven that. Therefore, it is better to lie on the left side of the body: it is healthy through proper sleep.