What Happens to Our Joints As We Age?

An illustration showing the differences between a normal, healthy joint, a joint affected by osteoarthritis, and one affected by rheumatoid arthritis.

Osteoarthritis becomes more common as we age – about 27 million people in the U.S. have osteoarthritis, a condition in which the cartilage between the joints breaks down, causing stiffness, pain, and loss of movement in the joints. One of the best ways to manage osteoarthritis is to stay active and maintain a healthy weight. Lack of movement contributes to stiffness and weak joints. Exercises include those for range of motion and flexibility, endurance, and strength.