Cardiovascular events

Vitamin D

Trials have not established a general cardiovascular prevention benefit from vitamin D supplementation.

moderate evidence

Direction: no clear effect

Magnitude: unknown

Human evidence reviewed

Study context

Population: Adults

Studied dose: Varies or not established

Duration: Varies across reviewed studies

Last reviewed: 2026-09-16

Limitations & caveats

  • Baseline vitamin D status and trial design vary.

Sources

NIH ODS: Vitamin D — Health Professional Fact SheetExpert or government fact sheet · NIH Office of Dietary Supplements · supportsOpen ↗

Source type and claim strength are separate. A fact sheet summarizes underlying research; its link is not an individual clinical trial.