Final answer:
The DRI recommends 1200 milligrams of calcium per day for women over 50 and men over 70 to maintain bone health and prevent osteoporosis.
Step-by-step explanation:
The Dietary Reference Intakes (DRI) recommend different amounts of calcium intake depending on age and gender. For women over the age of 50 and men over the age of 70, the DRI suggests an increase in calcium intake to support bone health as the body's ability to absorb calcium declines with age. The correct amount of calcium recommended for these groups is 1200 milligrams of calcium per day. Calcium is essential for maintaining bone density and preventing osteoporosis, which is a concern for postmenopausal women and older adults. To ensure sufficient intake of this critical nutrient, individuals can consume calcium-rich foods such as milk, cheese, yogurt, or green, leafy vegetables.