Research
Micronutrients & recovery
Vitamin D supplementation at typical doses (400–8571 IU/d) does not produce clinically significant improvements in blood pressure, glycemic control, or cardiovascular disease risk in generally healthy adults.
Taking Vitamin D supplements (even at high doses up to 8571 IU/day) will not lower your blood pressure, prevent diabetes, or protect your heart if you are already generally healthy. Do not rely on Vitamin D as a substitute for proven lifestyle changes or medications for these conditions.
WeakRefutesHIGH confidence
Trials showed no clinically significant effect of vitamin D supplementation at the dosages given.
Why this rating
Based on a systematic review of 18 randomized controlled trials and 13 observational studies.
Source
Systematic Review: Vitamin D and Cardiometabolic Outcomes
Anastassios G. Pittas et al. · Annals of Internal Medicine · 2010
DOI 10.7326/0003-4819-152-5-201003020-00009
Meta-analysis · 31 studiesCited 744×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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