Human growth hormone HGH is a peptide hormone produced by th
Solution
Differnet reponses to the patient who get the same dose of the HGH to improve height is due to the fact that height is controlled by two factors: genetic and environmental. The same doses of HGH supplementation give differnet response as nutrition level, physical health, surroundings, physical activities, body\' condition (healthy, immune system) also determine the height of the individual. Since thse factors (the environmental factors) vary for different individuals, HGH gives different responses.
 Use of HGH for the muscle mass builiding is not FDA approved as athletes use it to improove their muscle mass and thereby to improve their performance. Also HGH supplements are used to counteract the natrually reducing level of the hormone with increasing age. Therefore, use of HGH for muscle mass builiding affect the body by reversing the natural process of ageing.

