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 4 studies on Vitamin D for Improved Gait Speed — overall evidence strength: Low.
Across 4 studies, 2 found beneficial effects on gait speed (effect sizes ranged from small to large) and 2 found neutral effects, indicating mixed evidence. The median study duration was 112 days, with benefits observed primarily in clinical populations such as COPD patients and elderly with sarcopenia, but not in generally healthy older adults.
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.