Melatonin

Depressant.

Also an antioxidant.

Essential to the circadian rhythm and for sleep.

Inhibited by blue light.

Produced by the pineal gland.

From wikipedia (references are valid for this site though):

It has been documented that melatonin production diminishes as a person ages.¹ Additionally, a shift in the timing of melatonin secretion is observed during adolescence, resulting in delayed sleep and wake times, increasing their risk for delayed sleep phase disorder during this period.²

Forms/Types

Fruits (especially pineapples, bananas and oranges)
Rice
Cereals/grains
Olive oil

Melatonin

Forms/Types

Deficiency - Too Little

Random Facts

References