Osteoporosis is a condition that makes bones weak and brittle. To prevent or treat osteoporosis, it's important to supplement with vitamins and minerals, primarily calcium and vitamin D. Calcium helps in the formation and maintenance of bones, while vitamin D assists the body in absorbing calcium. This is especially crucial for older adults, postmenopausal women, and those whose diet lacks these nutrients. When choosing supplements, it's best to look for products that contain 100% of the daily required amount and consult a doctor for safety and effectiveness.