Elevated growth hormone levels: A study reveals a surprising link to liver aging
A recent study published in the journal Aging-US on October 3, 2025, sheds light on a surprising connection between growth hormone levels and liver aging. The research, led by Parminder Singh and co-authored by Pankaj Kapahi and Andrzej Bartke, uncovers how excess growth hormone (GH) disrupts liver metabolism, leading to aging-like damage.
The study's findings are particularly intriguing as they challenge the common understanding of GH's impact on the body. While GH is known to cause various disorders, its long-term effects on internal organs like the liver were previously unclear. To explore this, researchers used a mouse model engineered to overproduce bovine GH, allowing them to observe the chronic hormone's impact on liver function over time.
The results were striking. Young mice with GH overexpression exhibited molecular and cellular patterns similar to those found in naturally aged livers. Both groups showed suppressed metabolism-related genes and activated immune and inflammatory response genes. This overlap between hormone-driven and age-related liver dysfunction provides a new perspective on how GH may accelerate aging processes.
The study also highlights the role of glycation, a process where sugars attach to proteins or fats without proper regulation, leading to the formation of harmful compounds called advanced glycation end products (AGEs). These AGEs were found to be associated with the metabolic changes, while the immune and inflammatory responses reflected 'inflammaging,' a form of chronic, low-grade inflammation commonly linked to aging.
The good news is that the research offers a potential solution. By reducing glycation stress, the team demonstrated improved liver health, reduced insulin resistance, and enhanced physical function in mice. This intervention also corrected abnormal genetic patterns caused by excess GH. These findings suggest that targeting glycation could be a promising therapeutic strategy for liver diseases associated with aging and hormonal imbalances.
In summary, this study reveals a previously unknown connection between elevated growth hormone levels and liver aging, emphasizing the importance of managing glycation stress for liver health. It opens up new avenues for research and potential treatments, offering hope for those affected by hormone-related liver conditions.
