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Editor's Correspondence
September 12, 2009

Vitamin D Supplements vs Plasma Level

Author Affiliations

Copyright 2009 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2009

Arch Intern Med. 2009;169(16):1536. doi:10.1001/archinternmed.2009.280

Golomb et al1 suggest that calcium may have counteracted the effect of vitamin D in the Women's Health Initiative (WHI) study, as the reason for the calcium–vitamin D supplement showing no benefit against myocardial infarction, whereas Giovannucci et al2 found that higher plasma 25-hydroxyvitamin D concentrations lowered the risk of myocardial infarction in men.