Dear Dr. Roach: I’m a woman of 54 with somewhat limited mobility due to back pain. Perhaps for this reason, my primary care physician ordered a DEXA scan in 2023 and again in 2026. I was alarmed when the recent scan showed osteopenia in five of the six areas that were tested. I thought the 2023 scan was normal, but when I revisited it, I saw that I had osteopenia then as well. But in the 2023 report, they had only looked for a Z-score of less than -2 as an indicator of a problem, whereas in 2026 they used the T-score.
Dr. Keith Roach is an Associate Professor of Clinical Medicine at Weill Cornell Medical College and New York Presbyterian Hospital. He specializes in medicine and healthcare, focusing on topics such as aging and longevity, diet and nutrition, mental health, and wellness programs. Dr. Roach's insights and expertise have been featured in various publications, including the Houston Chronicle, The Detroit News, and the Arizona Daily Star.










