Bone health deserves attention in midlife, but there is no universal recommendation for everyone to start bone-density testing at 40. Osteoporosis can weaken bones without obvious symptoms, so the decision to screen depends on more than how you feel.
Know what the screening guidance says
The U.S. Preventive Services Task Force recommends screening women age 65 and older. It also recommends screening postmenopausal women younger than 65 when clinical assessment shows increased fracture risk. For men, the task force finds the evidence insufficient to recommend for or against routine screening; clinicians use individual judgment.
These recommendations address adults without known osteoporosis or previous fragility fractures. Certain diseases or medicines that cause bone loss require a different clinical assessment. Tell your clinician about fractures, family history, smoking, alcohol use, and medicines, including long-term steroid treatment.
Build habits around your own ability
NIH guidance supports appropriate weight-bearing and resistance exercise, balance work, and adequate calcium and vitamin D. Food choices, activity, and fall prevention belong in the conversation alongside testing. Ask before starting supplements or a new exercise program if you have osteoporosis, low bone density, or other limitations.
Useful appointment questions include: What raises my risk? Would a DXA scan change my care? Which activities are safe for me? What would we do with the result? A personalized plan is more useful than buying a test or supplement because of an age-based headline.
