Physiological Effects of Light On Sleep
- An extensive study showed that unlike those who spent nights in the dark, the test group exposed to the light had elevated heart rates throughout the night.
- They also had increased insulin resistance in the morning, meaning they had more trouble getting their blood sugar into a normal range.
- Artificial light at night can suppress melatonin levels, and scientists have found a link between the disruption of melatonin and several diseases, including cancer and diabetes.
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