Melatonin is purported to play a myriad of roles in humans. The most important of these is maintaining the sleep-wake cycle or the circadian rhythm. The roles of melatonin in humans can be summarized ...

Medically reviewed by Allison Herries, RDN Key Takeaways Melatonin is a hormone that regulates your circadian rhythm and ...

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 and ...

Sleep remains an underrated tool in the weight-management arsenal. A regular routine of sufficient, high-quality sleep can make a real difference in the ability to maintain a healthy weight, and can ...

One of my friends is taking melatonin and has urged me to do the same in order to protect against heart attacks and Alzheimer’s disease. Do you agree that it is worthwhile to take melatonin? My short ...

Melatonin could be a novel drug for preventing bone loss of astronauts during space flight. Here we used goldfish scales as a bone model of coexisting osteoclasts and osteoblasts and demonstrated that ...