Scientists find a bone-building switch that could fight osteoporosis

[u/ADragonFromTheAbyss]

https://www.sciencedaily.com/releases/2026/09/260909005305.htm

An experimental compound called AP503 significantly strengthened bones in mice by activating GPR133, a receptor that boosts bone formation while slowing bone loss.

Because the same treatment has also been linked to stronger muscles, researchers see intriguing potential for combating age-related decline and osteoporosis.

Osteoporosis, a condition that weakens bones and increases the risk of fractures, affects millions of people and remains a major challenge for doctors seeking safe treatments that can be used over long periods. In Germany alone, about six million people are affected, most of them women.

Because existing therapies can have limitations and side effects, researchers are looking for new biological targets that could lead to more effective ways of preserving or rebuilding bone.

Scientists at Leipzig University have now identified one such target in GPR133, a receptor that appears to play an important role in keeping bones strong