{"claimId":"clm_ec_b1-vitd-immunity","version":1,"status":"current","verdict":"Vitamin D for immune function: Grade C at low certainty. modest reduction in acute respiratory infection risk, concentrated in deficient people","direction":"benefit","magnitude":{"metric":"other","value":null,"unit":"","ci95":null,"humanReadable":"modest reduction in acute respiratory infection risk, concentrated in deficient people","baselineAbsoluteRisk":null},"certainty":"low","clinicalMeaning":"small_but_potentially_useful","applicability":{"appliesTo":["adults"],"doesNotApply":["children"],"unknown":["pregnancy"]},"safetyQualifiers":[],"evidenceBundleId":"eb_ec_b1-vitd-immunity","citations":[{"pmid":"20000105"}],"reviewedBy":{"name":"Substrate editorial","credential":"Independent research collective"},"reviewedAt":"2026-07-14T00:00:00Z","dateModified":"2026-07-14T00:00:00Z","methodologyVersion":"v1","methodologyDoi":"https://doi.org/10.5281/zenodo.21364236","canonicalUrl":"https://evidencebased.info/interventions/vitamin-d/immunity","attribution":"Substrate (evidencebased.info), claim clm_ec_b1-vitd-immunity v1, reviewed 2026-07-14","license":"CC-BY-4.0 — attribution with link required"}