Weight loss
Arthritis Foundation states that, each pound (lb) of body weight is equal to 6 lbs of added pressure on the hip joints and 3 lbs of added stress on the knees.
This increased pressure and stress weakens the cartilage between the joints and causes it to break down more quickly, worsening the disease. Therefore, losing weight can reduce pressure and stress on the joints, reducing stiffness and pain. [1]