John Kopchick, professor of molecular biology and principal investigator at the Institute for Molecular Medicine and Aging at Ohio University, has spent much of his career studying the effects of reducing growth hormone activity. His research has focused on how suppressing growth hormone may help treat certain diseases and potentially promote healthier aging and longer life.

Kopchick and his colleagues developed Pegvisomant, a growth hormone receptor antagonist that blocks the effects of growth hormone and is used to treat conditions caused by excessive growth hormone production. During experiments in mice, the researchers completely eliminated growth hormone activity and made an unexpected discovery: the mice lived significantly longer than normal. While typical laboratory mice live for around two and a half years, some of the growth hormone-suppressed mice lived for up to five years.

The long-lived mice were also found to be more resistant to age-related conditions such as diabetes and cancer. These findings suggest that reducing growth hormone activity may not only extend lifespan but also improve health during aging by lowering the risk of several chronic diseases.

According to Kopchick, aging and age-related diseases are closely connected. Reducing the risk of conditions such as cancer, diabetes and heart disease could play an important role in promoting healthy aging.

However, growth hormone suppression would not be appropriate during childhood, when the hormone is essential for normal growth and development. Researchers believe that potential interventions may be more suitable later in life, possibly after maturity and the reproductive years.

The research also has potential implications for cancer treatment. In animal studies, Kopchick's team has reported promising results using growth hormone-related therapies in combination with chemotherapy, including research involving pancreatic cancer. While further studies are needed to determine whether these findings can translate to humans, the research highlights the potential of targeting growth hormone pathways to address aging and age-related diseases.

Sporce: https://woub.org/2026/08/13/research-ohio-university-john-kopchick-growth-hormone/