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Personalized Vitamin D3 Cuts Heart Attack Risk by 50%

11/12/2025

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Summary

Story summary

The TARGET-D trial from Intermountain Health involved 630 patients and found that personalized vitamin D3 dosing reduced recurrent heart attacks by 50%.
The results were presented at the American Heart Association Scientific Sessions 2025.
Most participants began with insufficient vitamin D levels.
Researchers urge monitoring and adjusting vitamin D doses to achieve optimal blood levels and call for larger trials to validate these findings.

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Story summary

The TARGET-D trial from Intermountain Health involved 630 patients and found that personalized vitamin D3 dosing reduced recurrent heart attacks by 50%.
The results were presented at the American Heart Association Scientific Sessions 2025.
Most participants began with insufficient vitamin D levels.
Researchers urge monitoring and adjusting vitamin D doses to achieve optimal blood levels and call for larger trials to validate these findings.