four times the pressure on your knees arthritis extra weight being carried is not equal extra weight being carried is not equal osteoarthritis Arthritis cases caused by obesity make those cases of arthritis worse Arthritis studies make those cases of arthritis worse Losing weight puts less stress on your joints Arthritis Foundation weight-bearing joints like your knees. translates to at least 4 pounds on the knees the load on your knees reduces by four pounds more likely our weight gets transmitted through our knees Obesity