Melatonin ihomoni inovanzwa nepineal gland yeuropi mumhuka dzinoyamwisa uye nevanhu.Nekuti inogona kugadzira masero anoburitsa melanin chiedza, nekudaro zita rekuti melatonin, inozivikanwawo sepineal hormone, melatonin, melatonin.Mushure mekunge melatonin yagadzirwa uye kuchengetwa mumuviri wepineal, kunzwira tsitsi tsinga yekukurudzira innervates masero epineal kuburitsa melatonin.Iyo secretion ye melatonin ine iripachena circadian rhythm, iyo inodzvinyirirwa mukati mezuva uye inoshanda usiku.Melatonin inogona kuvharidzira hypothalamic-pituitary-gonadal axis, kuderedza zviri mukati gonadotropin inobudisa hormone, gonadotropin, luteinizing hormone uye follicle stimulating hormone, uye inogona kuita zvakananga pane gonads kuderedza zvinyorwa zve androgen, estrogen uye progesterone.