For decades, calcium and vitamin D supplements have been among the most widely recommended interventions for bone health in older adults. The biggest systematic review of the evidence ever conducted says most people taking them are not getting meaningful protection from fractures or falls.
A meta-analysis published in The BMJ on June 15, 2026, examining 69 randomized controlled trials involving 153,902 adults, found that calcium alone, vitamin D alone, or both combined offered little to no clinically meaningful reduction in fracture risk or fall risk for most older adults living independently.
What the BMJ Analysis Found
The Canadian research team, led by Olivier Massé and colleagues, analyzed 69 randomized controlled trials and used pre-agreed clinically meaningful thresholds — not just statistical significance — as the primary criterion for benefit. This methodological choice makes conclusions more directly applicable to patient care than most prior reviews.
The BMJ Group's press release summarizes the findings:
| Supplement and Outcome | Evidence Level | Finding |
| Calcium alone — any fracture | Moderate certainty (11 trials; 9,067 participants) | Little to no effect |
| Vitamin D alone — any fracture | High certainty (36 trials; 92,045 participants) | Little to no effect |
| Calcium + vitamin D — any fracture | High certainty (15 trials; 51,126 participants) | Little to no clinically meaningful effect |
| Any supplement — hip fracture specifically | High or moderate certainty | Little to no effect |
| Any supplement — falls | High or moderate certainty | Little to no effect |
The combination of calcium and vitamin D showed a slight statistical trend toward fracture reduction that did not meet the pre-agreed threshold for clinically meaningful benefit.
Who This Does — and Doesn't — Apply To
This applies to community-dwelling older adults without diagnosed osteoporosis, confirmed vitamin D deficiency, or malabsorption conditions. Specific populations for whom supplementation may retain clinical rationale include: adults with confirmed vitamin D deficiency (serum 25-OH-D below 20 ng/mL); people with diagnosed osteoporosis on pharmacological bone treatment; those with malabsorption conditions; and housebound individuals with very limited sun exposure.
The message is not "throw away your vitamins." It is: for the average healthy older adult taking these primarily as a fracture-prevention strategy, the evidence no longer strongly supports that rationale.
Real bone protection requires a different strategy: fall prevention (vision checks, medication review, home hazard removal), weight-bearing and resistance exercise, adequate protein intake, and — where clinically indicated — pharmacological osteoporosis treatment.
The U.S. Preventive Services Task Force (USPSTF) issued a draft recommendation in December 2024 against routine supplementation for falls and fracture prevention in community-dwelling adults — a reversal of its 2018 recommendation. That draft has not yet been finalized, leaving a gap between evidence and official guidance that physicians and patients must navigate.
Frequently Asked Questions
What did the BMJ calcium and vitamin D study find?
69 randomized trials, 153,902 adults, published June 15 2026 in The BMJ: calcium alone, vitamin D alone, or both combined offered no clinically meaningful reduction in fracture or fall risk for most independently living older adults.
Should I stop taking calcium and vitamin D?
Talk to your doctor first. If you take them for diagnosed osteoporosis, confirmed deficiency, or malabsorption, that clinical rationale may still hold. If primarily for general fracture prevention, the evidence no longer strongly supports that as a primary rationale.
What does actually work for fracture prevention?
Weight-bearing and resistance exercise, fall prevention (home hazard review, vision testing, medication review), adequate protein, and — for diagnosed osteoporosis — pharmacological treatment (bisphosphonates, denosumab).
Was this the largest study ever on this question?
Yes. 69 randomized controlled trials and 153,902 adult participants makes this the largest systematic review on this topic ever conducted.
What is vitamin D's actual role in health?
Vitamin D has roles beyond bone health, including immune function, muscle function, and cardiovascular health. Correcting confirmed deficiency is still clinically appropriate. This study specifically addressed fracture and fall prevention — not vitamin D's broader health roles.
