How does melatonin work

How does melatonin work? Melatonin production in the body is stimulated by darkness and inhibited by light. The brain receives signals through the retina of the eye. which is then sent along the optic nerve to the brain's main bioclock. That is the superchausmatic nucleus SCN. This bioclock regulates the flow of melatonin and other hormones. including many other physiological processes