What disease causes a reduction in the density and the quality of bone?

Osteoporosis is the disease that causes a reduction in both the density and quality of bone. It leads to an increased risk of fractures due to weakened bones, often occurring without any noticeable symptoms until a fracture occurs. The condition is commonly associated with aging, hormonal changes, and nutritional deficiencies, particularly in calcium and vitamin D. Prevention and treatment involve lifestyle modifications, medications, and in some cases, supplements to improve bone health.