Personalized Vitamin D Levels Cut Repeat Heart Attack Risk by Half
- A new Intermountain Health study presented at the American Heart Association's 2025 Scientific Sessions found that adults with heart disease who optimized their vitamin D levels cut their risk of another heart attack by 52%
- Most participants began the trial with low vitamin D levels, showing that deficiency is common in people with cardiovascular disease and silently increases the risk of recurring heart problems
- More than half of the patients needed over 5,000 IU of vitamin D3 daily — six times the FDA's recommended intake — to reach protective blood levels between 40 and 80 ng/mL
- Vitamin D acts as a hormone that helps lower inflammation, maintain proper calcium balance, improve blood vessel function, and reduce oxidative stress — all key to preventing heart damage
- Regular testing, personalized dosing, sunlight exposure, and daily exercise are simple, measurable ways to restore vitamin D, strengthen your heart, and reduce your risk of another cardiac event
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