This thread has gotten too many views with no answer. At least, do me a favor and check out melatonin.com ; Also, I found this on the web.
http://www.overgrow.com/edge/showthread/t-348664.html
Check out his references.
beachguy in thongs Reviewed by beachguy in thongs on . Does second-hand pot smoke increase melatonin levels? Well, all of you chemists, biologists, and psychics out there? Rating: 5