Melatonin and Inhibiting Reproductive Functions.
"In some mammals, melatonin slows the maturation of sperm, oocytes and reproductive organs by reducing the rate of GnRH secretion. The significance of this effect in human remains unclear. Circumstantial evidence suggests that melatonin may play a role in the timing of human sexual maturation. Melatonin levels in the blood decline at puberty, and pineal tumors that eliminate melatonin production cause premature puberty in young children"
Now again the research in humans was not stated. Just something to look into.
The good news about Melatonin, not only influencing circadian rythms is melatonin is a very effective antioxidant, It my protect CNS neurons from free radicals, such as nitric oxide or hydrogen peroxide, that may form in active neural tissue.
This is from my textbook."Martini/Nath/Bartholomew. Fundamentals of Anatomy & Physiology 9th edition." Im currently studying the Endocrine system and have an exam tomorrow. Just looking out for my IMF brothers. And you have no idea how important your Pituitary gland is.