For osteoarthritis, it is best to eat more foods rich in protein, such as milk, egg whites, and fish, which have abundant protein and can help alleviate the condition. Furthermore, consume foods high in calcium and take calcium supplements. Osteoarthritis is mostly a chronic bone and joint disease, primarily affecting joint cartilage and leading to degenerative changes. It generally occurs more often in middle-aged and elderly people, and is more common in women than in men. In the early stages, the main lesions occur in the bone cartilage, with the joint cartilage being commonly affected. The cartilage surface may undergo erosion, exposing the underlying bone, and eating foods high in protein can help relieve symptoms. Moreover, collagen fibers can be supplemented by consuming broth made from large bones or pig's feet, which, combined with the use of calcium supplements, can better aid recovery. Regularly drinking milk is also very beneficial.