Which statement best explains why dietary calcium and vitamin D are emphasized for postmenopausal bone health?

Which statement best explains why dietary calcium and vitamin D are emphasized for postmenopausal bone health?

• A. Because they increase iron absorption
• B. Because reduced estrogen increases fracture risk, so calcium 1200 mg/day and vitamin D 800–2000 IU/day help maintain bone health
• C. Because they cure osteoporosis instantly
• D. Because they reduce cholesterol levels

Answer: (D)