"The current evidence does not support the routine use of calcium or vitamin D supplements... for the prevention of fractures or falls in most community-dwelling older adults."
Major Review Finds Calcium and Vitamin D Supplements Ineffective for Preventing Fractures and Falls
A large-scale systematic review and meta-analysis published in The BMJ has found that calcium, vitamin D, or combined calcium and vitamin D supplements provide little to no clinically meaningful benefit for preventing fractures or falls in most community-dwelling older adults. The analysis examined data from 69 randomized controlled trials involving 153,902 participants.
Methodology and Scope
The study, published on 30 October 2024, was a systematic review and meta-analysis. It evaluated the effect of calcium supplements, vitamin D supplements, and combined calcium and vitamin D supplements on fracture and fall prevention compared to a placebo or no treatment.
The analysis included 69 randomized controlled trials with a total of 153,902 participants. Researchers reported that 87% of participants were community dwelling, and 73% were not considered to be at high risk for fractures or falls.
Key Findings
Overall Fracture Risk- Calcium alone (11 trials; 9,067 participants): Showed little to no effect on the risk of any fracture. This finding was supported by moderate certainty evidence.
- Vitamin D alone (36 trials; 92,045 participants): Showed little to no effect on the risk of any fracture. This finding was supported by high certainty evidence.
- Combined calcium and vitamin D (15 trials; 51,126 participants): Showed little to no effect on the risk of any fracture. This finding was supported by high certainty evidence.
- No meaningful effect was observed on the risk of specific fractures, such as hip fractures.
- No meaningful effect was observed on the rate of falls.
The results were found to be consistent across a range of subgroups, including those based on age, sex, history of fractures and falls, and average dietary calcium intake from food sources.
Study Limitations and Applicability
The authors of the review noted several limitations. Some analyses included a small number of trials and participants. The findings may not apply to specific populations, such as individuals with diagnosed bone disorders (e.g., osteoporosis) or those currently receiving drug treatment for osteoporosis.
Implications and Interpretation
The authors of the review concluded that the current evidence does not support the routine use of calcium or vitamin D supplements, alone or in combination, for the prevention of fractures or falls in most community-dwelling older adults. They suggested that clinicians, guideline panels, and regulatory agencies re-evaluate general recommendations in light of this evidence.
In a linked editorial, other researchers stated that focus and funding should be redirected toward interventions with proven benefit. They specifically cited balance and resistance exercise, as well as combined interventions tailored to individual risk profiles. The editorial also called for rigorous, well-powered trials to inform future recommendations for higher-risk groups.