Melatonin yog cov tshuaj hormones secreted los ntawm cov tsiaj nyeg thiab cov qog pineal ntawm tib neeg lub hlwb, thiab nws muaj ntau yam kev ua haujlwm lom neeg, suav nrog kev tswj kev pw tsaug zog thiab kev pw tsaug zog, antioxidant, tiv thaiv kab mob, thiab neuroprotective.Lub luag haujlwm tseem ceeb ntawm melatonin yog ua kom pw tsaug zog, ceeb toom rau tib neeg tias nws yog lub sijhawm pw tsaug zog, thiab txo lub sijhawm pw tsaug zog thiab txhim kho kev pw tsaug zog zoo.Tsis tas li ntawd, nws kuj muaj cov nyhuv antioxidant muaj zog, uas tuaj yeem tshem tawm cov dawb radicals hauv lub cev thiab tiv thaiv cov hlwb los ntawm kev puas tsuaj oxidative.Nyob rau tib lub sijhawm, melatonin kuj muaj cov tshuaj tiv thaiv kab mob, tuaj yeem txo qhov mob, txo qhov mob thiab o thiab lwm yam tsos mob, thiab muaj qee yam cuam tshuam rau kev kho mob caj dab, gout thiab mob ntev.