Final answer:
For postmenopausal women with osteoporosis, the recommended daily intake of calcium is 1200 mg and for vitamin D it is 600 IU. These nutrients are important for bone health and help prevent osteoporosis, which is more common in postmenopausal women due to reduced estrogen levels.
Step-by-step explanation:
The recommended daily intake levels of calcium and vitamin D for postmenopausal women with osteoporosis, according to current guidelines, would be Option C) Calcium: 1200 mg, Vitamin D: 600 IU. Postmenopausal women are at a higher risk for osteoporosis due to the decrease in estrogen production, which is critical for maintaining bone mass. In light of this, adequate intake of calcium and vitamin D is essential for bone health.
To prevent osteoporosis, it is not only important to consume an adequate amount of calcium and vitamin D but also to engage in weight-bearing exercise, which helps in building bone mass. Moreover, the absorption of calcium from the diet requires the presence of vitamin D, which plays an essential role in bone remodeling as well. Considering the age-related decrease in intestinal calcium absorption after the age of 55 to 60, and the increased risk of osteoporosis during and after menopause, the recommended intake amounts are specifically adjusted to meet the needs of postmenopausal women.