Vitamin D Supplementation Not Associated With Reduced Cardiovascular Events JAMA Cardiology EMBARGOED FOR RELEASE: 11 A.M. (ET), WEDNESDAY, JUNE 19, 2019 Media advisory: To contact corresponding author Mahmoud Barbarawi, M.D., email Sarina Gleason at [email protected]. The full study is linked to this news release. Embed this link to provide your readers free access to the full-text article This link will be live at the embargo time: https://jamanetwork.com/journals/jamacardiology/fullarticle/2735646?guestAccessKey=d3f9efa6-cc55-45e0-a46f-e202dddd5ad8&utm_source=For_The_Media&utm_medium=referral&utm_campaign=ftm_links&utm_content=tfl&utm_term=061919 Bottom Line: This study, called a meta-analysis, combined the results of 21 randomized clinical trials with about 83,000 patients to look at whether vitamin D supplementation was associated with reduced risk of cardiovascular disease events such as heart attack or stroke. Some observational studies have suggested an association between low blood levels of vitamin D and an increased risk of cardiovascular disease events. This study reports that compared with placebo, vitamin D supplementation wasn’t associated with a reduction in major adverse cardiovascular events (heart attack, stroke or death from cardiovascular disease) or overall death. The results were similar between different doses of vitamin D and for men and women. A limitation of the study is that the definition of major adverse cardiovascular events varied between the clinical trials. Authors: Mahmoud Barbarawi, M.D., Michigan State University, Flint, and coauthors (doi:10.1001/jamacardio.2019.1870) Editor’s Note: The article contains conflict of interest disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, financial disclosures, funding and support, etc. # # # For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email [email protected].