Beetroot Juice Shown to Lower Blood Pressure in Older Adults
Recent research has found that drinking beetroot juice, which is high in nitrates, may help lower blood pressure in older adults. A new study from the University of Exeter has revealed that this health benefit could be linked to changes in oral bacteria.
In the study, researchers compared the effects of beetroot juice on two groups: 39 participants under the age of 30 and 36 individuals in their 60s and 70s. Each group went through two phases over two weeks. One group consumed daily shots of beetroot juice rich in nitrates, while the other group received a nitrate-free placebo. After a washout period to reset their systems, they switched drinks for the second phase.
To analyze the effects, researchers looked at the types of bacteria in participants’ mouths using gene sequencing. They found that older adults who had the nitrate-rich beetroot juice had fewer bacteria called Prevotella, which are linked to inflammation, and more beneficial bacteria like Neisseria.
Dr. Marc Siegel, a senior medical analyst, explained that nitrates can help lower blood pressure by making blood vessels more flexible and reducing inflammation. The results showed that the older adults’ blood pressure decreased after drinking beetroot juice, while the placebo group experienced no change.
He encouraged a diet rich in nitrates found in foods like leafy greens and beets, emphasizing their potential to lower blood pressure.
In line with this, Andy Jones, co-author of the study, pointed out that nitrate-rich foods can modify the oral microbiome in ways that may reduce inflammation and improve blood pressure in older adults.
Lee Beniston, affiliated with the Biotechnology and Biological Sciences Research Council, noted the importance of this research in understanding how diet, oral bacteria, and healthy aging are connected. He stated that understanding how dietary nitrates influence health opens new avenues for improving vascular wellness through nutrition.
Both Dr. Siegel and Jones highlighted the need for more studies to build on these findings. It’s important for anyone with high blood pressure or other health conditions to consult their doctor before making significant dietary changes.
Overall, the study supports existing beliefs about the benefits of eating plenty of fruits and vegetables for managing chronic health issues as we age.
