Can swimming help treat osteoporosis? While swimming offers many health benefits, more evidence is needed to determine if it can strengthen bones. Osteoporosis is a condition where bones become weak and are more prone to fractures. There is no cure, but it can be managed. Weight-bearing exercises, in particular, can improve symptoms and reduce the risk of fractures. Studies show that swimming 3-6 hours a week may increase bone density, but it might not be as effective as weight-bearing exercises. If you enjoy swimming, continue doing it, but also incorporate weight-bearing exercises like walking or weightlifting. Avoid high-impact activities to prevent fractures.