How melatonin works and what you should know about it

Melatonin is a hormone produced in the brain that regulates the body’s circadian rhythm, signaling the body to prepare for sleep by lowering temperature and slowing digestive activity. Dr. Michael Howell, a neurologist and sleep specialist, recommends low-dose melatonin for night owls with circadian rhythm delays but advises against it for early risers, as it may worsen their sleep patterns.