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One night spent sleeping in a moderately lit room, rather than a dimly lit room, can lead to higher heart rate during the night and blood sugar the next morning, a small study suggests.
Paper author and sleep expert Dr Phyllis Zee of Illinois’ Northwestern University said: “The results from this study demonstrate that just a single night of exposure to moderate room lighting during sleep can impair glucose and cardiovascular regulation.” These, she explained, are risk factors for diabetes, heart disease and metabolic syndrome. Dr Zee added: “It’s
Details of a sleep lab experiment show that even moderate light exposure during sleep harms heart health and increases insulin resistance.
Exposure to even moderate ambient light during nighttime sleep, compared to sleeping in a dimly lit room, harms cardiovascular function.
People who are exposed to bright light at night may experience changes in their heart rate and insulin levels that are associated with an increased risk for cardiovascular disease and diabetes.