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 sc an 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. ...read more read less