Melatonin is a hormone responsible for regulating sleep cycles, also known as a circadian rhythm.

Authors

• Person: Not available Organization: London Andrology
  How Men's Hormones Change with Age - London Andrology

Sources

• How Men's Hormones Change with Age - London Andrology londonandrology.com London Andrology via serper

Referenced by nodes (2)

• melatonin concept
• circadian rhythm concept