Personalized vitamin D lower risk of getting another heart attack

(MENAFN) A personalized vitamin D regimen for heart attack survivors substantially lowers the risk of experiencing another cardiac event, according to research presented at the American Heart Association’s Scientific Sessions 2025 on Sunday.

The study examined adults with a history of heart disease who had previously suffered a heart attack, investigating whether optimizing vitamin D blood levels could help prevent future heart attacks, strokes, heart failure, hospitalizations, or deaths.

Participants were randomly divided into two groups: one receiving standard care and the other receiving customized vitamin D supplementation. In the treatment group, vitamin D doses were adjusted every three months until blood levels exceeded 40 nanograms per milliliter, a threshold considered optimal by many experts.

Researchers found that over nearly four years, participants receiving individualized vitamin D therapy had a 52% lower risk of a repeat heart attack compared with those receiving standard care.

“We encourage people with heart disease to discuss vitamin D blood testing and targeted dosing with their health care professionals to meet their individual needs,” said the study’s principal investigator, Dr. Heidi May.

Although the study noted that tailored vitamin D dosing did not significantly reduce the combined primary outcome of death, heart failure hospitalizations, or stroke, it demonstrated a clear benefit in preventing recurrent heart attacks.

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