Sleeping with the light on might scare away monsters under the bed, but it could be linked to an increased risk of heart disease and diabetes, research suggests.
Light is an important signal by which the body’s internal clock, which governs a host of biological processes from temperature to hormone release, is synchronised to the external cycle of day and night.
A number of studies have revealed, however, that keeping the lights on at night could be problematic. Among them, research has suggested it is associated with obesity in women and type 2 diabetes among elderly people, while a recent study from researchers in the Netherlands suggested bright daytime lighting and low light at night could help people with pre-diabetes control their blood sugar levels.
Read more at: https://www.theguardian.com/society/2022/mar/14/sleeping-with-light-on-linked-to-higher-risk-of-heart-disease-and-diabetes