World Osteoporosis Day was launched on October 20, 1996, by the UK's National Osteoporosis Society with support from the European Commission, and has since been organized annually by the International Osteoporosis Foundation (IOF) starting in 1997. The day raises awareness of osteoporosis, a condition that weakens bone structure and increases fracture risk, particularly among postmenopausal women and older adults of both sexes. It highlights the importance of early prevention through proper nutrition rich in calcium and vitamin D, regular exercise, and periodic bone density screening, especially for those at higher risk. The International Osteoporosis Foundation and its partner medical associations worldwide run annual awareness campaigns that include free bone density screenings, medical lectures, and educational materials aimed at the general public and at-risk groups, encouraging early preventive action.