Question

risk factors of osteoporosis
osteoporosis is most common in elderly women because of the lack of _, which would otherwise inhibit _.
osteoblasts; osteoclast activity
dietary calcium; estrogen production
exercise; osteoblast activity
parathyroid hormone; osteocyte activity
estrogen; osteoclast activity

Explanation:

In elderly women, due to menopause, estrogen levels decline. Estrogen normally inhibits osteoclast activity. Osteoclasts break down bone tissue, and when their activity is not properly inhibited due to low - estrogen levels, bone loss occurs, increasing the risk of osteoporosis.

Answer:

E. estrogen; osteoclast activity