Sleeping in the dark may help to protect your health, study suggests

Sleeping in the dark may reduce your risk of heart disease and diabetes, a new study suggests (PA)

Sleeping in the dark may reduce your risk of heart disease and diabetes, a new study suggests.

Exposure to overhead lighting during sleep at night, compared to sleeping in a dimly lit room, harms heart function during sleep and affects how well the body responds to insulin the next morning, researchers found.