Vitamin D May Help Heart Attack Survivors Cut Their Risk in Half

According to Fox News, new research suggests that a simple, natural nutrient may offer major protection for heart health. A large clinical trial by Intermountain Health found that people who had already suffered a heart attack could slash their risk of a second one by up to 50 percent through optimized vitamin D3 supplementation.

The study, known as the TARGET-D trial, followed 630 patients who had experienced a heart attack within the previous month. Researchers adjusted vitamin D3 doses to reach optimal blood levels above 40 nanograms per milliliter and found that higher doses dramatically lowered the likelihood of another cardiac event. The results were presented at the 2025 American Heart Association Scientific Sessions.

Lead researcher Heidi May, a cardiovascular epidemiologist at Intermountain Health, said the findings are “exciting” and come with no adverse outcomes even at higher doses. Vitamin D deficiency is widespread, affecting up to two-thirds of people globally. With less time spent outdoors and more processed diets, many Americans may be missing out on this essential nutrient naturally produced by the sun and found in fortified plant-based foods and supplements.

Previous research has linked vitamin D to lower risks of hypertension, stroke, and heart failure. Experts say that maintaining healthy levels of vitamin D can reduce inflammation and Support vital organ function. While more research is needed to confirm benefits for lower-risk populations, this new evidence strengthens the case for prioritizing nutrition and sunlight as part of a heart-healthy lifestyle.

For those focused on sustainable health and protecting the planet, vitamin D can be obtained through whole plant-based sources like mushrooms and fortified plant milks—showing that what’s good for your heart can also be good for the Earth.

Taking small, natural steps toward better nutrition supports both human and environment health—so let’s keep our hearts strong and our planet thriving.

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