Melatonin Stops Working: Causes & Solutions
Melatonin is an endogenous hormone produced by the pineal gland that helps regulate the circadian rhythm. At night, melatonin levels increase (100-300 ng/mL) – and this serves as a physiological signal that it’s time for sleep, and thus we become drowsy/sedated – and inevitably fall asleep. For a variety of reasons, many people decide to …