Which statement about calcitonin in osteoporosis management is true?

• A. To prevent osteoporosis
• B. To delay bone resorption
• C. To stimulate osteoclasts
• D. To increase calcium absorption

Answer: (B)

Calcitonin acts as an antiresorptive hormone in bone. In osteoporosis, where bone breakdown outpaces formation, slowing resorption helps preserve bone mass. Calcitonin inhibits osteoclast activity, reducing bone resorption and the release of calcium from bone. This is why the statement about delaying bone resorption is true and clinically relevant for osteoporosis management. It isn’t used to prevent osteoporosis, it doesn’t stimulate osteoclasts, and it doesn’t primarily increase calcium absorption from the gut; its main effect is on bone resorption.