Weightlifting positively affects bone density by applying mechanical stress to bones, stimulating the process of bone remodeling. This form of resistance training encourages bones to adapt and strengthen in response to the loads imposed during weightlifting. Increased bone density reduces the risk of osteoporosis and fractures, particularly in older adults. Additionally, weightlifting improves muscle mass and strength, further supporting bone health. Regular resistance training is crucial for maintaining healthy bones, as it promotes the development of new bone tissue and enhances overall skeletal integrity.