Bone Density for Men — Body Handbook

Screening · §103

Bone Density for Men

Osteoporosis reads as a women's disease, so men skip the one check that catches it. But about four in ten fragility fractures happen in men, and when an older man breaks a hip, roughly one in three is dead within the year Haentjens et al. 2010. The test is a ten-minute bone scan; the treatment is a generic pill that costs less than coffee. Most men who'd benefit get neither, because nobody told them to ask.

Screen · Yearly Evidence Moderate Chapter Screening

About one in eight men over 50 has osteoporosis on a scan, and a man past 50 has roughly a one in seven lifetime chance of a low-impact break ¹. Only one in ten ever gets diagnosed, and many already carry a spine fracture they never felt ².

The treatment is well proven: a yearly infusion cut spine fractures from about 5% to 1.5% over two years ³, and the pill matched it ⁴. The only real argument is screening: specialists say scan older men, primary-care guidelines say the trial hasn't been done ¹ ⁵. That gap is why nobody offers it.

Men's bones don't crash, they drain. There's no menopause-style drop; peak bone slowly leaks out from age 50, faster in men with an accelerator on the list below ¹. And it isn't mainly testosterone — the small amount of estradiol men make is the stronger predictor. Which is why raising testosterone alone won't save your hip.

Ask for a DEXA scan if you are:

A man 70 or older — no other criteria needed.
50–69 with any accelerator: a prior break from a small fall, a parent who broke a hip, body weight under ~155 lb (70 kg), heavy smoking, three-plus drinks a day, prednisone 5 mg+ for over three months, prostate-cancer hormone therapy, low testosterone, or an overactive thyroid or parathyroid.
Any age with an existing fragility fracture — you don't need the scan to start treatment.

Reading the result: a T-score at or below -2.5 is osteoporosis; -1 to -2.5 is osteopenia. Paired with a FRAX 10-year probability, US practice treats if hip risk clears 3% or major-fracture risk 20%.

If you treat: a weekly generic pill (alendronate or risedronate) is the usual start; a yearly IV infusion (zoledronic acid) is the swap if the pill ritual defeats you. Five years, then reassess.

Underneath, for everyone: heavy resistance training twice a week, calcium 1,000–1,200 mg (food first), vitamin D 800–1,000 IU/day, protein at least 1.0 g/kg/day, alcohol under three drinks, no smoking, and honest rugs and stairs at home.

You won't feel anything change. The payoff is an event that never arrives: the morning you don't catch the rug and go down onto a hip that can't take it. Five years in, you're the same height you were at sixty; twenty years in, you're still walking into the diner on your own steam while the friends who skipped it are shorter, stooped, or gone. The absence of the catastrophe is the return.

The fine print — when to skip it, and what people get wrong

"Walking is enough." Walking holds almost no bone once it's daily; the signal comes from heavy load — barbell squats, deadlifts, jumps, twice a week ⁶.

"Testosterone protects bones." It raises the scan number, but the largest fracture trial found it increased fractures ⁷. Treat low T for its own symptoms.

"No breaks, so I'm fine." One in eight older men carries a spine fracture he can't feel; the first one you notice is often the hip.

The break that doesn't trigger treatment. Roughly nine in ten men leave the fracture clinic after a first break with no medication started. If you've broken a bone from a small fall as an adult, ask outright.

The pill that drifts. Most men stop weekly alendronate within a year; the empty-stomach, stay-upright ritual slips and never comes back. Ask about the yearly infusion instead.

Bisphosphonate pills irritate the esophagus unless taken upright, with water, on an empty stomach; skip them below a third of normal kidney function. Jaw and thigh-bone problems are real but rare (~1 per 10,000 treatment-years). Denosumab can't be stopped cold — bridge onto a bisphosphonate or lose bone fast.

References

1Watts NB, Adler RA, Bilezikian JP, Drake MT, Eastell R, Orwoll ES, Finkelstein JS (2012). Osteoporosis in Men: An Endocrine Society Clinical Practice Guideline. Journal of Clinical Endocrinology & Metabolism. link
2Orwoll E, Blank JB, Barrett-Connor E, et al. (2005). Design and baseline characteristics of the osteoporotic fractures in men (MrOS) study — a large observational study of the determinants of fracture in older men. Contemporary Clinical Trials. link
3Boonen S, Reginster J-Y, Kaufman J-M, et al. (2012). Fracture Risk and Zoledronic Acid Therapy in Men with Osteoporosis. New England Journal of Medicine. link
4Orwoll E, Ettinger M, Weiss S, et al. (2000). Alendronate for the Treatment of Osteoporosis in Men. New England Journal of Medicine. link
5US Preventive Services Task Force (Curry SJ, et al.) (2018). Screening for Osteoporosis to Prevent Fractures: US Preventive Services Task Force Recommendation Statement. JAMA. link
6Harding AT, Weeks BK, Lambert C, Watson SL, Weis LJ, Beck BR (2020). A Comparison of Bone-Targeted Exercise Strategies to Reduce Fracture Risk in Middle-Aged and Older Men with Osteopenia and Osteoporosis: LIFTMOR-M Semi-Randomized Controlled Trial. Journal of Bone and Mineral Research. link
7Snyder PJ, Bhasin S, Cunningham GR, et al. (2024). Effect of Testosterone Replacement Therapy on Fractures in Hypogonadal Men. New England Journal of Medicine. link

Related in the handbook (6)

Works well with

— A few milligrams of boron a day cuts urinary calcium loss — a minor, cheap add-on to the proven bone essentials, not a substitute.
— Weighted walking loads the hips and spine — a gentle way to stress bone into staying dense.
— Loading bone is one of the few things that builds it back — lifting belongs in any bone plan.
— Vitamin D is part of keeping bone strong — worth checking alongside a density scan.

— Low testosterone is a leading cause of thinning bone in men — if your scan is low, getting your level checked is part of the workup.
— Vitamin K2 helps steer calcium into bone instead of artery walls — a quiet, decade-scale supporting move if you're watching bone density.