Bone tissue is crucial for overall health and quality of life, but it undergoes constant internal remodeling, leading to osteoporosis, a widespread bone disease. Regular physical activity can improve bone mineral density (BMD) and prevent osteoporosis. Studies have shown that premenopausal women with regular physical activity have greater BMD. Diagnosing bone resorption is essential, and dual-energy X-ray absorptiometry tests (DXA) and circulating microRNAs (miRNAs) may offer more prognostic potential than conventional markers. The gut microbiome may also regulate bone metabolism, with metabolites like trimethylamine N-oxide (TMAO) playing a role. A project aims to promote systematic physical activity to improve BMD and well-being, support societal mobilization, and conduct preventive examinations for osteoporosis risk. Implementing systematic prevention is important not only for health but also for reducing social and financial costs associated with osteoporosis and associated fractures.