Osteoporosis Osteoporosis is fast becoming one of the nation's leading health care problems. NPR's Alison Richards has part two of her series on the disease. She reports on two things that could prevent osteoporosis: increasing calcium intake and increasing vigorous exercise. The calcium issue is tricky, because our bodies are programmed to absorb only a small amount of the calcium we take in. And our more sedentary lifestyles make it hard to get all the weight-bearing exercise we need.