Sleeping with light pollution linked to diabetes, study says
Sleeping in a room exposed to outdoor artificial light at night may increase the risk of developing diabetes, according to a study of nearly 100,000 Chinese adults.
Prior research has shown an association between artificial light at night and weight gain and obesity, disruptions in metabolic function, insulin secretion and the development of diabetes, and cardiovascular risk factors.
A study published earlier this year by Zee and her team examined the role of light in sleep for healthy adults in their 20s. Sleeping for only one night with a dim light, such as a TV set with the sound off, raised the blood sugar and heart rate of the young people during the sleep lab experiment.
The analysis found chronic exposure to light pollution at night raised blood glucose levels and led to a higher risk of insulin resistance and diabetes.
Be aware of the type of light you have in your bedroom and ban any lights in the blue spectrum, such as those emitted by electronic devices like televisions, smartphones, tablets and laptops — blue light is the most stimulating type of light, Zee said.
“If you have to have a light on for safety reasons change the color. You want to choose lights that have more reddish or brownish tones,” she said. If a night light is needed, keep it dim and at floor level, so that it’s more reflected rather than next to your eye at bed level, she suggested.
Avoid sleeping with the television on — if you tend to fall asleep while it’s still on, put it on a timer, Zee suggested. #television #lightpollution #sleep