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Will Blood Pressure Remedy Lead to Kidney Stones?

Scientists confirm that drinking beet juice could be a helpful blood pressure remedy. However, it might increase the risk of kidney stones for some people.

Hippocrates’ warning that the physician should do no harm in the course of treating a condition should also apply to anyone treating themselves with home remedies. An astute reader searching for a blood pressure remedy noted that it might have a serious drawback. Could drinking beet juice increase the risk for kidney stones?

Beet Juice as a Blood Pressure Remedy:

Beet juice has been proposed as a natural way to lower blood pressure. A study shows that just one cup of beet juice daily can lower high blood pressure by roughly 10 points (Hypertension, online April 15, 2013). That is just as good as many prescription medications.

The researchers used spontaneously hypertensive rats to figure out the enzyme responsible for this effect. They located an enzyme active in red blood cells (erythrocytes)and confirmed that this enzyme is also active in human red blood cells. Subsequently, they gave 15 volunteers with hypertension a cup of beet juice as a source of natural dietary nitrate. A cup of water served as the placebo.

The enzyme converts dietary nitrate in beet juice into nitrite. Volunteers had the highest nitrite levels several hours after drinking the juice. However, the scientist detected the effect for nearly the whole day. Nitrite levels in turn are converted to nitric oxide, which relaxes blood vessels to bring down blood pressure. This is a far more detailed understanding of an effect that was reported earlier.

A meta-analysis of 11 randomized controlled trials found that beet juice can lower blood pressure (Biomolecules, Nov. 2, 2018). In summary, the investigators concluded that this could serve as a cost-effective strategy.

What Are the Risks of a Popular Blood Pressure Remedy? 

Q. My husband takes medication for his high blood pressure. He’d like to find ways to lower it more naturally, so we are intrigued that you have written about beet juice for blood pressure control.

Unfortunately, he also gets kidney stones. From what I have read, beets and beet juice are high in oxalates. Is that true? It would mean we have to find a different way to lower his blood pressure.

Foods That Boost the Chance of a Kidney Stone:

A. Four decades ago, scientists found that a handful of foods can increase the oxalate content of the urine (Clinical Science, April 1981). They include chocolate, peanuts, beets, rhubarb and spinach. People prone to oxalate-containing kidney stones should avoid such foods.

Beet Juice Is Not the Only Blood Pressure Remedy:

Other natural approaches can also provide blood pressure control, however. Unsweetened pomegranate or cherry juice can both lower blood pressure. For example, participants in a randomized controlled drank two cups of tart cherry juice or a placebo beverage every day for three months (Food & Function, June 20, 2018). Those consuming cherry juice had lower systolic blood pressure and LDL cholesterol.

Other strategies include eating magnesium-rich foods, learning how to breathe slowly and relaxing in a hot tub or sauna. For lots more information about controlling hypertension, you may wish to consult our eGuide to Blood Pressure Solutions.

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About the Author
Terry Graedon, PhD, is a medical anthropologist and co-host of The People’s Pharmacy radio show, co-author of The People’s Pharmacy syndicated newspaper columns and numerous books, and co-founder of The People’s Pharmacy website. Terry taught in the Duke University School of Nursing and was an adjunct assistant professor in the Department of Anthropology. She is a Fellow of the Society of Applied Anthropology. Terry is one of the country's leading authorities on the science behind folk remedies..
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