Human growth hormone (HGH) is scientifically recognized for its role in supporting the muscular system. HGH is a peptide hormone produced by the pituitary gland that stimulates growth, cell reproduction, and cell regeneration. It is crucial for normal muscle and bone development, particularly during childhood and adolescence.

In adults, HGH continues to play a significant role in maintaining muscle mass and strength. Clinical studies have demonstrated that HGH therapy in individuals with growth hormone deficiency leads to increases in muscle mass and reductions in body fat. For example, a meta-analysis published in the journal Clinical Endocrinology (2007) found that recombinant HGH treatment increased lean body mass and muscle strength in deficient adults (reference).

However, in healthy individuals without a deficiency, the effects are less clear and use is controversial. Some studies indicate modest muscle gains, but these are often accompanied by significant risks and side effects, such as joint pain, insulin resistance, and increased risk of certain cancers. The use of HGH for athletic enhancement is banned by most sports organizations.

In summary, the scientific evidence supports the use of HGH for treating muscle wasting in deficiency states, but not for general muscle enhancement in healthy people. Its use should be limited to medically supervised contexts.