The human body undergoes a myriad of changes during prolonged exposure to microgravity. While rigorous training and countermeasures mitigate some risks, challenges remain, particularly concerning bone density loss, cardiovascular deconditioning, neurovestibular dysfunction, and immune suppression. Continued research and innovation are essential to ensuring astronaut health and mission success during long-duration spaceflight.Access free and premium content on the SpaceInfo Club website!#space #human #gravity