Research library / Immunity

Vitamin D supplementation to prevent acute respiratory infections: a systematic review and meta-analysis of aggregate data from randomised controlled trials

D Jolliffe, C Camargo, J Sluyter, M Aglipay, J Aloia, D Ganmaa et al.. The Lancet Diabetes & Endocrinology. 2021.

Published 2026-10-15Sources checked 2026-10-151 sourceEverstack research teamHow we work

In plain language

Vitamin D modestly reduced acute respiratory infection (OR 0.92), mainly with daily 400 to 1,000 IU.

Limits

Small pooled effect; heterogeneity.

Source

doi.org/10.1016/S2213-8587(21)00051-6 · PubMed 33798465

Summary written by Everstack from the published abstract. Verified against Crossref on 2026-10-15. The authors do not endorse Everstack.