To prevent osteoporosis fractures, what is the recommended daily dose of calcium and vitamin D?

The correct daily dose for the prevention of osteoporosis fractures is well-supported by current guidelines, which recommend a total calcium intake of 1000 to 1200 mg and a vitamin D intake of about 800 IU for older adults. Calcium is critical for maintaining bone density; sufficient levels help in preventing bone loss and osteoporosis. Vitamin D plays an essential role in calcium absorption and bone health, enhancing the effectiveness of calcium in maintaining bone density.

Option C is particularly regarded as correct because it aligns with recommendations from major health organizations for older adults, providing an adequate amount of both nutrients to support bone health effectively. This combination not only helps maintain bone strength but is also aimed at reducing the risk of fractures associated with osteoporosis, which is a significant concern in the geriatric population.

The dosage parameters offered in the other options either fall short or exceed the typical recommendations, leading to ineffective management of osteoporosis prevention. Balancing both calcium and vitamin D is crucial to ensure that the body can effectively use calcium, and this balance is achieved with the dosage presented in the correct answer.