Improving Blood Pressure with Vegetable Juice

Here’s an interesting find. Recent research indicates that consuming a certain vegetable juice—particularly packed with nutrients—twice a day might help reduce blood pressure in older adults, potentially eliminating the need for medication.

This is significant, especially considering that nearly 70% of adults aged 65 and over in the U.S. are struggling with hypertension, which is a key contributor to heart disease, the leading cause of death in the country.

For the study, researchers from the University of Exeter engaged 39 younger adults under 30 and 36 older participants in their 60s and 70s.

Participants were instructed to take a shot of beetroot juice—known for its dietary nitrates—twice daily for a span of two weeks.

Following that, they switched to using an antiseptic mouthwash daily for two weeks, after which they repeated the routine but with a placebo juice that had the nitrates removed.

At the end of each sequence, the researchers analyzed the bacteria in the participants’ mouths through gene sequencing.

A change in the oral microbiome—the collection of bacteria residing in the mouth—was noted after consuming the nitrate-rich juice, although different age groups exhibited varying results.

Older adults, in particular, showed a decrease in bacteria associated with infections along with an increase in those linked to better health outcomes.

Crucially, the older participants experienced a drop in blood pressure after drinking the beetroot juice, a trend not observed with the placebo or in the younger group.

“This study demonstrates that consuming nitrate-rich foods can modify the oral microbiome in ways that may reduce inflammation and lower blood pressure in older individuals,” noted Dr. Andy Jones, one of the study’s co-authors.

Now, to provide some context—nitrates are composed of nitrogen and oxygen and can be found in soil, water, and specific foods, especially leafy greens and root vegetables. Our bodies also naturally produce nitrates.

Once ingested, nitrates transform into nitric oxide—a molecule critical for regulating blood circulation, lowering blood pressure, and delivering oxygen to muscles among other functions.

“We understand that a diet rich in nitrates can have health benefits, and as people age, their bodies generate less nitric oxide,” commented Dr. Anni Vanhatalo, the lead author of the study.

“This poses challenges since older individuals often face higher blood pressure, which heightens their risk of heart attacks and strokes,” she added.

Researchers speculate that an imbalance of oral bacteria in seniors might hinder their ability to convert nitrates into nitric oxide, which could disrupt blood pressure regulation.

“By revealing the effects of dietary nitrates on oral bacteria and blood pressure in older adults, this study paves the way for new nutritional strategies to enhance vascular health,” remarked Dr. Lee Beniston, who is involved in industry partnerships and collaborative research at the Biotechnology and Biological Sciences Research Council.

This latest study aligns with previous findings showing that regular consumption of beetroot juice can indeed help lower high blood pressure.

A 2017 meta-analysis indicated that regularly drinking beet juice resulted in reductions in both systolic and diastolic blood pressure across various studies.

In 2022, another meta-analysis evaluated trials in which participants consumed different amounts of beet juice daily for periods ranging from three to sixty days.

The results hinted at improved blood pressure regardless of dosage, although those taking 250 mL each day experienced the most significant decrease—suggesting that might be the ideal quantity for optimal benefits.

Earlier research showed that blood pressure could drop within just three hours of beet juice consumption, though consecutive daily intake for at least two months seems to lead to better long-term results.

If beetroot juice isn’t your cup of tea, don’t worry. There are several other vegetables loaded with nitrates.

The next time you’re at the grocery store, consider picking up spinach, arugula, fennel, celery, or kale to enhance your nitrate intake.