gry Gene, Ellen Shell promoted the idea that leptin may be one of the causes of obesity. Leptin is a naturally occurring hormone that controls the appetite. When full, fat cells release the hormone leptin, it curbs the appetite. If leptin production is changed, the fat cells are unable to signal that they are full and weight gain occurs. Research into leptin is just beginning. A small minority of cases of obesity can be explained by gland or hormonal problems. One such problem is clinical hypothyroidism. This is where there is not enough thyroid hormone to control normal rates of meta
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