People who exercise regularly tend to sleep better and have a lower risk of heart disease, making them unlikely to use ...

Insomnia has been associated with a higher risk of having a heart attack or stroke. Disrupted circadian rhythms — our body clocks in which melatonin plays a role — and insufficient sleep have been ...

New research suggests that people with insomnia who use melatonin supplements for more than a year have a higher risk of ...