Diagnosed w osteoporosis at age 50 (I’m 72now). Took fosamax for 15 years and became osteopenic but now osteoporosis is returned. My endocrinologist feels I’ve maximized benefits of fosamax and that category of drug and recommended prolia. I haven’t taken prescription meds for 7 years. I’m active and have never broken a bone. I do have a couple of risk factors: thalassemia and my mother had several hip fractures in her lifetime starting at age 50.