Harmful side effects of human growth hormone include nerve, muscle and joint pain, carpal tunnel syndrome, numbness and tingling of the skin, and high cholesterol levels, states WebMD. HGH use can also contribute to the growth of cancerous tumors and increase the risk of diabetes.
Research suggests that the adverse effects of HGH may be more prevalent among older adults than younger people, according to Mayo Clinic.
The Food and Drug Administration approves of HGH to treat short bowel syndrome, muscel-wasting diseases such as AIDS, and HGH deficiency due to pituitary disorders, reports WebMD. As HGH levels in the body decline with age, anti-aging experts purport that HGH injections can reverse the effects of aging; however, as of 2015, the FDA does not approve of the use of HGH for anti-aging.