Beetroot Juice Cuts Older Adults' Blood Pressure in 2 Weeks as Mouth Bacteria Shift
Updated
Updated · ScienceDaily · May 31
Beetroot Juice Cuts Older Adults' Blood Pressure in 2 Weeks as Mouth Bacteria Shift
9 articles · Updated · ScienceDaily · May 31
Two weeks of nitrate-rich beetroot juice taken twice daily lowered blood pressure in adults in their 60s and 70s, while younger adults showed no comparable drop.
75 participants completed crossover testing with nitrate-rich and nitrate-depleted placebo juice, and gene sequencing showed the drink reshaped oral bacteria tied to nitrate processing.
Older adults saw Prevotella fall and beneficial Neisseria rise, changes researchers say may improve nitric oxide production that helps blood vessels relax.
The Exeter team says the findings support nitrate-rich vegetables such as beetroot, spinach, arugula, fennel, celery and kale as a practical addition to healthy aging strategies, though not a replacement for blood-pressure medication.
Larger studies are planned to test how age, sex, lifestyle, oral hygiene and baseline microbiome differences affect who benefits most.
Could the secret to lowering your blood pressure be hiding in your mouth?
As global hypertension soars, could this common vegetable offer a simple solution?
How Beetroot Juice and Oral Bacteria Lower Blood Pressure in Seniors: Latest 2026 Findings and Practical Guidance
Overview
Recent research shows that beetroot juice can help lower blood pressure in older adults by using a natural process involving dietary nitrates. These nitrates, found in vegetables like beetroot and spinach, are first converted by specific bacteria in the mouth into compounds that support the body’s production of nitric oxide. Nitric oxide is important for heart health because it helps blood vessels relax and function properly, which in turn helps regulate blood pressure. By improving the balance of oral bacteria, nitrate-rich foods like beetroot juice can naturally support cardiovascular health in older adults.