Big effect
Vitamin D linked to a large improvement in walking speed among older adults with sarcopenia — but the finding rests on just three studies, two of which found no effect.
This meta-analysis suggests vitamin D may help frail older adults walk faster, but the evidence is thin and inconsistent — it’s a promising signal, not a settled fact.
In a network meta-analysis of anti-inflammatory supplements for sarcopenia, vitamin D stood out for improving gait speed — a measure of how fast someone can walk, which reflects physical function and fall risk. The effect size was unusually large, but only one of the three pooled studies actually showed a benefit; the other two found nothing. The result comes from a clinical population (older adults with diagnosed sarcopenia), so it may not apply to healthier people.
Where this fits in the evidence
Pillser has synthesized 3 studies on Vitamin D for Improved Gait Speed — overall evidence strength: Low.
Across 3 studies, 1 reported a beneficial large-sized effect of vitamin D on gait speed in elderly patients with sarcopenia, while 2 found neutral small-sized effects. The median study duration across 2 reporting studies was 576 days, indicating effects typically observed at prolonged follow-up (8+ weeks). The evidence is predominantly drawn from clinical populations (elderly, postmenopausal women, sarcopenia patients), with most studies not specifying a consistent dose range.
The study
- Meta-Analysis
- 2026-06
- Complementary therapies in medicine
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.