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.
Plasma 25(OH)D levels are inversely associated with risk of incident hypertension.
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
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