Katie Benghauser, 57, has been diagnosed with osteopenia and takes Fosamax as treatment to prevent osteoporosis. Coburn Dukehart/NPR hide caption

itoggle caption Coburn Dukehart/NPR

Dr. Jack Wennberg in his Dartmouth office in Lebanon, N.H. John W. Poole / NPR hide caption

itoggle caption John W. Poole / NPR