This weight-loss hormone may protect the liver even without weight loss
A hormone already known for curbing appetite and supporting weight loss may have a surprising second job: protecting the liver from inflammation and scarring. Researchers at McMaster University found that GDF15 activates a previously unknown brain-to-liver pathway that triggers the release of glucocorticoids, helping calm immune activity in the liver.
Researchers at McMaster University have discovered a new role for the hormone GDF15 in protecting the liver from inflammation, even without weight loss. This finding, published in Cell Metabolism on August 10, 2026, challenges the belief that GDF15's benefits are primarily related to appetite and weight loss. The hormone activates a brain-to-liver signaling pathway that suppresses liver inflammation and reduces fibrosis, suggesting it could be a key player in the body's defense against chronic liver injury.
The study, conducted using mouse models of advanced fatty liver disease, found that GDF15 initiates a protective response by triggering the release of glucocorticoids, which help reduce inflammation in the liver. This discovery could lead to new treatments for advanced fatty liver disease, which currently has limited options for managing liver inflammation, even after substantial weight loss.
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