Over time, this repeated stress speeds up the breakdown of cartilage – the smooth tissue that cushions bones. As cartilage wears away, the bones begin rubbing against each other, causing inflammation, pain, stiffness, and eventually osteoarthritis. “For every extra kilogram of body weight you gain, the knees experience several times that load during activities like walking or climbing stairs. Over time, this repeated stress damages the cartilage, increases inflammation, and raises the risk of osteoarthritis. People notice the stiffness and discomfort after long walks, swelling, or a crunching sensation while moving,” said Dr. Bagaria.
