Researchers say eating broccoli could help prevent the most common form of arthritis.
Experts say a component in the vegetable appears to slow the break down of cartilage in the joints associated with osteoarthritis.
The study found mice that ate a lot of broccoli had significantly less cartilage damage than those who ate smaller amounts.
There were similar results in cow and human cartilage.
Scientists are now planning a clinical trial for patients who are awaiting knee replacement surgery.