Gut Bacteria Transform Vegetable Compounds Into Molecules That Improve Heart and Metabolic Health, Study Finds
Researchers at Karolinska Institutet have found that gut microbes can convert nitrate and plant-based iron from vegetables into molecules that may help protect against cardiovascular and metabolic disease. According to the findings, published in Cell on August 22, 2026, these molecules — known as dinitrosyl iron complexes (DNICs) — were associated with lower blood pressure, better blood sugar control, healthier blood vessels, and reduced liver fat in experimental models. The discovery reveals a previously unknown mechanism through which diet and gut bacteria may cooperate to support heart and metabolic health.
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