A BMJ review of 69 randomized trials found little to no benefit from vitamin D, calcium, or both for preventing falls and fractures in people at higher risk. Medical advice: keep taking prescribed supplements, but don’t rely on them alone.
People with osteoporosis or a confirmed deficiency should continue supplements as directed by their clinician.
Diet, weight-bearing exercise and safe sun exposure remain the primary strategies to support bone strength across the life course.
Follow recommended dose limits: roughly 10 micrograms (400 IU) vitamin D daily commonly advised, avoid exceeding 4,000 IU vitamin D or 1,500 mg calcium daily without medical supervision.
Many older adults take vitamin D and calcium specifically to reduce fracture risk. The review suggests those supplements alone are unlikely to meaningfully cut fall or fracture rates for most people. That does not mean the nutrients have no biological roles, but it does mean supplementation should not be treated as a standalone prevention strategy.
Dr Donald Grant, a GP and senior clinical adviser at The Independent Pharmacy, advised continuing supplements if a doctor has recommended them — for example, in people with osteoporosis or with confirmed vitamin D deficiency. He framed supplements as one element of care rather than the sole protection against fractures and falls.
For people without a diagnosed deficiency, the article recommends focusing on measures with clearer evidence for building and maintaining bone strength:
These lifestyle steps are aimed at building peak bone strength earlier in life and maintaining it as people age.
The article repeats common dosage boundaries discussed by clinicians:
If you were prescribed vitamin D or calcium for a specific medical reason, keep taking them and follow your clinician's guidance. If you are taking them purely as a preventive habit against fractures or falls, reconsider the strategy: prioritize diet, sun exposure when appropriate, and weight-bearing exercise as foundational approaches. Speak to a healthcare professional before starting or changing supplement doses.
Older adults often turn to calcium and vitamin D supplements to support their bone health and reduce the risk of a fracture after a fall. New research calls their effectiveness into question.
A sweeping review of more than 153,000 adults found that calcium and vitamin D supplements, alone or together, do little to prevent fractures or falls in most older people. Researchers say the findings challenge routine supplementation for prevention and point instead toward strategies such as balance and resistance ex
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