A study from the University of Exeter led by Anni Vanhatalo found that drinking nitrate-rich beetroot juice twice daily lowered systolic blood pressure by about 4 mmHg in adults over 65, but showed no significant effect in participants aged 18 to 30. The blood pressure benefits are tied to the oral microbiome: beetroot juice reshapes mouth bacteria by suppressing harmful types like Prevotella species while boosting beneficial bacteria that convert nitrates into blood vessel-relaxing nitric oxide. Older adults naturally produce less nitric oxide, making dietary nitrates from beetroot juice a valuable supplemental source to combat age-related hypertension. A separate study…
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