Androgens are responsible for the growth spurt of adolescence and for the eventual termination of linear growth, which is brought about by fusion of the epiphyseal growth centers. In children, exogenous androgens accelerate linear growth rates but may cause a disproportionate advancement in bone maturation. Use over long periods may result in fusion of the epiphyseal growth centers and termination of growth process. Androgens have been reported to stimulate the production of red blood cells by enhancing the production of erythropoeitic stimulating factor. During exogenous administration of androgens,Â endogenous testosterone Â release is inhibited through feedback inhibition of pituitary luteinizing hormone (LH).
The decline in both female and male libido can be linked to the decline in secretion of HGH in the body. Sexual potency and HGH levels are high in puberty, however diminishes throughout as you percent of men have erection problems as they approach 80 years. A clinical study in South Africa conducted of about 300 ageing adults proved that HGH treatment boosted sexual potency in about 75 percent of men. Furthermore, interviews conducted on people in Denmark using HGH therapy to slow down aging process indicate both men & women experienced improvement in sexual function and libido.