Melatonin is a hormone your brain makes naturally to control your sleep cycle. The process is tied to the amount of light around you. Your melatonin level usually starts to rise after the sun sets ...

Having some trouble falling asleep? Blame it on your pineal gland. Melatonin is a hormone created by the pineal gland in the midbrain and it helps regulate your sleep and wake cycle, according to ...

Many of us think of melatonin only as an over-the-counter sleep aid, given its widespread use. But melatonin is a hormone already circulating through our bodies, like adrenaline or cortisol.