Many older people suffer from painful knee joints because their cartilage wears away, often leading to surgery. To solve this, scientists found an anti-aging drug that blocks a protein called 15-PGDH. This allows the body to naturally regrow smooth, healthy cartilage. People benefit because this treatment can stop joint pain, fix old injuries, and help them stay active without ever needing a knee replacement. It is a simple injection that could change lives.
