Research

Hormonal

Low plasma 25-hydroxyvitamin D levels (specifically <15 ng/mL, indicating deficiency) are associated with a significantly increased risk of developing incident hypertension in both men and women, independent of traditional risk factors.

If you have high blood pressure or are at risk, check your vitamin D levels. This study links low levels (below 15 ng/mL) to a higher chance of developing hypertension. While this doesn't prove that taking supplements cures high blood pressure, it suggests that maintaining adequate vitamin D might be a helpful part of a heart-healthy strategy, especially if you are deficient.

GoodSupportsHIGH confidence
Plasma 25(OH)D levels are inversely associated with risk of incident hypertension.
John P. Forman et al. · Hypertension · 2007

Why this rating

Prospective cohort studies with large sample sizes and multivariable adjustments, though not randomized controlled trials.

Source

Plasma 25-Hydroxyvitamin D Levels and Risk of Incident Hypertension

John P. Forman et al. · Hypertension · 2007

DOI 10.1161/hypertensionaha.107.087288

cohort · n=117730Cited 898×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →