Vegetables may offer benefits that go beyond their vitamins, minerals and fibre. Researchers have found that gut bacteria can transform dietary nitrate and plant-based iron into bioactive molecules that may support cardiovascular and metabolic health. In experimental models, higher levels of these compounds were associated with lower blood pressure, improved blood sugar regulation, healthier blood vessels and reduced liver fat. The findings highlight how interactions between diet and the gut microbiome can influence health. However, much of the evidence comes from experimental studies, so more research is needed to determine whether the same effects occur in humans. Still, the research adds to growing evidence that a diverse, plant-rich diet can support both gut microbes and overall health.
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