Why are elite swimmers at risk of developing bone atrophy?

Elite swimmers are at risk of developing bone atrophy primarily due to the low-impact nature of their sport, which limits the mechanical loading on bones necessary for maintaining bone density. Swimming is a non-weight-bearing exercise, meaning it does not provide the same stimulating forces on bones as activities like running or Weightlifting. Additionally, the buoyancy of water reduces the gravitational forces acting on the body, further contributing to decreased bone density over time. This can lead to an increased risk of fractures and other skeletal issues if not properly managed with strength training and nutrition.