Wondering what melatonin effects on Obesity are? In this short blog post we will have a look at some of the effects that melatonin has not only on humans but in animals as well in which this hormone is produced. Melatonin is linked to energy metabolic process as well as plays a role in controlling body weight, especially in small creatures such as rats that were of middle age. Several researches done to establish relation between melatonin and body weight have revealed that constant supplementation of melatonin in drinking water cuts down on excess weight as well as stomach fat in experimental creatures.