Quote Originally Posted by ermitonto
Perhaps you're thinking of melanin, the chemical which determines skin color.

Melanin, the pigment responsible for dark skin in some peoples and for tanning after exposure to sunlight in light-skinned peoples, is produced from the "natural" indole and amino acid, tryptophan. Melatonin, which is synthesized by our bodies only in the dark, blocks the synthesis of melanin.


http://www.vitaletherapeutics.org/vtlindol.htm
Sinsemilla Jones Reviewed by Sinsemilla Jones on . I want people to see this. I just posted it in a different section. -------------------------------------------------------------------------------- If you think that smoking weed while you're pregnant is okay...think again. Babies are meant to be born without Melatonin and have to rely on their Mother's Breast Milk to get it, the first 3 months, until their Pineal starts producing it naturallly, through Amino Acids. Smoking Weed raises your Melatonin Levels 4,000%, two hours after smoking a joint. This is off of Melatonin.com: Rating: 5