Osteoporosis is characterized by -: (A) Increased serum alkaline phosphatase, (B) Decreased bone density, (C) Wasting of muscles, (D) Looser's zone seen
Answer is B. Osteoporosis is characterized by an abnormally low bone mass (low bone density) and defects in bone structure, a combination of which renders the bone unusually fragile and at greater than normal risk of fracture.