Bedrooms with too much light linked to obesity
People who sleep in a room with too much light may be more at risk of obesity than people who sleep in a room with little or no light, a new study concludes.
A team of scientists at the Institute of Cancer Research in London conducted a study of 113,000 women. The women were asked to rate the amount of light in their bedrooms at night based on four different descriptions. The researchers then measured the women’s body mass index (BMI), waist-to-hip ratio and waist circumference, which are all measures of obesity.
The researchers found that the women who described their bedrooms at night as “light enough to see across the room, but not to read” generally had larger waistlines. The findings, published in the American Journal of Epidemiology, suggest that light and darkness play a role in the human body’s clock. However, the evidence is not significant enough to suggest that making one’s bedroom darker will affect one’s weight, the researchers noted.