Osteoporosis was found in 22% and low bone mass in 42% of men with prostate cancer

Design

Systematic review and random-effects meta-analysis of 52 cross-sectional and cohort studies

Population

91,913 men with prostate cancer at all stages

Primary outcome

Pooled prevalence of osteoporosis and low bone mass

Effect

Osteoporosis 22.0% (95% CI 19.9 to 24.1); low bone mass 41.7% (95% CI 36.6 to 46.9)

This meta-analysis pooled 52 cross-sectional and cohort studies including 91,913 men with prostate cancer at all stages. Osteoporosis and low bone mass were defined mainly by bone density T-scores of -2.5 or lower, and between -2.5 and -1.0.

Pooled osteoporosis prevalence was 22.0% (95% CI 19.9 to 24.1) and low bone mass 41.7% (95% CI 36.6 to 46.9). Heterogeneity was extreme (I² about 99% and 96%), with differences driven mostly by how bone density was measured and defined. No link between androgen deprivation duration and prevalence was detected, but duration data were sparse, so a real link is not excluded.

The review measured prevalence only. It did not assess fractures, screening effectiveness or treatment, so it cannot show that any bone intervention reduces fractures. It does support asking about bone health routinely.

• Consider baseline bone density testing in men starting androgen deprivation therapy.
• Check calcium and vitamin D intake and treat deficiency.
• Advise weight-bearing exercise and smoking and alcohol reduction.
• Use a fracture risk tool to decide on bone-protective treatment, per local guidance.
• Remember that this review did not test whether screening or treatment prevents fractures.

Why it matters

Bone loss is common, silent and treatable, and prostate cancer clinics are where men are most likely to be seen.

Don't overread it

Prevalence only, with very high heterogeneity; no fracture, screening or treatment outcomes were assessed.

The statistics, in plain English

An I² of 99% means almost all the variation between studies was real differences between them, not chance, so the pooled 22% is a rough average of very different populations and methods. Prevalence does not equal fracture risk.

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