Women sleeping with too much light in the room are at increased obesity risk, reveals new research.
Greater exposure to light at night raised both Body Mass Index (BMI) and waist size in more than 113,000 women taking part in the British study, scientists found.
The Breakthrough Generations Study followed the women for 40 years in an attempt to identify root causes of breast cancer. Obesity is a known risk factor for the disease, News.com.au reported.
The findings are reported in the American Journal Of Epidemiology.