Melatonin
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Melatonin function
maintains sleep/wake cycle; high during sleep, regulates onset of puberty
Melatonin regulation
Regulated by Sunlight; Light inhibits production, dark stimulates production
Melatonin target tissue
brain
Melatonin: Hypersecretion
decreased reproductive behavior, depressed mood, excessive sleepiness
Melatonin location
pineal gland
Melatonin: Hyposecretion
premature puberty, insomnia