A peptide hormone secreted by the anterior pituitary gland in the brain. HGH enhances tissue growth by stimulating protein formation.

HGH reduces body fat. The men did not alter their personal habits of eating, smoking, or exercise, yet with the consumption of HGH, they lost an average of 14% of their body fat, while gaining an average of 8.8% lean muscle mass. Their skin became firmer and they experienced a localized increase in bone density. Over all, HgH appeared to reverse the effects of aging by 10-20 years. HGH is prescribed and administered by a doctor in the form of injections. But a nonprescription form is also available over the counter and through mail order.