Is this nightly habit hurting your heart health?
Before going to bed, the researchers connected participants to IV tubes that allowed researchers to monitor their blood while they slept without waking them. The team also measured other sleep quality and health metrics, including their brain waves, hormone levels, and heart rates throughout the night. In the morning, the team took additional tests to measure glucose and insulin levels and administered a dose of glucose to participants to record their body's insulin response.
"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, which are risk factors for heart disease, diabetes, and metabolic syndrome,", MD, PhD, the study's senior author and chief of sleep medicine at Northwestern University Feinberg School of Medicine, said in a statement."It's important for people to avoid or minimize the amount of light exposure during sleep.
The study's findings helped support previous research, which has found that exposure to light during the day can increase your heart rate due to a response generated by your body's sympathetic nervous system. Typically, this allows you to become more alert during waking hours. But by being activated during sleeping hours, your body is missing out on crucial restoration time that the body needs to stave off serious health issues.
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