Low levels of melatonin, a hormone involved in the regulation of sleep, may boost the risk of diabetes, a new study suggests. Researchers at Harvard’s Brigham and Women’s Hospital expected to find some association between melatonin, a brain hormone that balances most hormones, and diabetes risk. They were surprised by the magnitude of what they found. Over a twelve year period, women with the lowest levels of melatonin were more than twice as likely to develop type-2 diabetes, compared to those with the highest levels of the brain hormone.
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