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MCAT Question A Day - 7/2/14 - Answer!

Osteoporosis is an absolute decrease in bone tissue mass, especially trabecular bone. All of the following might be contributory factors to the disease EXCEPT:

A.  increased sensitivity to endogenous parathyroid hormone
B.  defective intestinal calcium absorption
C.  menopause
D.  abnormally high blood levels of calcitonin

D is correct. Calcitonin builds bone mass. Menopause contributes to osteoporosis by reducing estrogen levels leading to diminished osteoblastic activity. You are not reqUired to know thisand may have had difficulty in eliminating this answer. Instead, you should answer this question by realizing that D was the exception.