What is the recommended daily calcium intake for most healthy adults, and when might higher intakes be recommended?

• A. About 800 mg/day for all adults.
• B. About 1200 mg/day for all adults.
• C. About 1500 mg/day for older adults.
• D. About 1000 mg/day for adults up to about 50; higher (about 1200 mg/day) for older adults or those at risk for osteoporosis.

Answer: (D)

Calcium is essential for building and maintaining strong bones, and daily needs rise with age. For most healthy adults, about 1000 mg per day supports bone health during the younger to middle years. After around age 50, especially for those at risk of osteoporosis, higher intake—about 1200 mg per day—is often recommended to help preserve bone mass. The other options don’t fit because 800 mg is typically below the standard target for most adults, 1200 mg for all adults isn’t appropriate for younger individuals, and 1500 mg per day for older adults exceeds typical guidelines and isn’t necessary for everyone in that group. Aim to meet needs mainly through diet, using supplements only if dietary intake falls short and not to exceed safe upper levels.