What is Melatonin?

Melatonin is a hormone produced by the pineal gland in both humans and animals, playing a crucial role in regulating sleep and wake cycles.
In response to darkness, the body increases melatonin production, signaling that it’s time to sleep and promoting feelings of drowsiness.
However, exposure to blue light — particularly from screens and artificial lighting — can suppress melatonin secretion by mimicking the effects of daylight, potentially disrupting the body's natural sleep rhythm.