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Study suggests protein made in the liver is a key factor in men’s bone health

Study suggests protein made in the liver is a key factor in men's bone health
Absence of plasma FN results in osteopenia and significant loss of trabecular bone mass in male mice. Credit: Matrix Biology (2026). DOI: 10.1016/j.matbio.2025.12.001

New research suggests the liver plays a previously unrecognized role in bone health, but only in males. A McGill University-led study published in Matrix Biology found that a protein made in the liver helps regulate bone growth in male mice, but not in females. The findings may help explain why men with liver disease are more likely to experience bone loss.

The protein, known as plasma fibronectin, is naturally present in blood at higher levels in men than in women, declines when the liver is damaged and builds up in bone to modulate bone formation...

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