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Beetroot for high blood pressure: how it is used, what studies show, and its limits

Clinical review pending

Beetroot nitrate may lower blood pressure. What studies show about juice, nitrate content, timing, and the limits of the evidence.

Illustrated plate opening onto a sunlit landscape of leafy vegetables and carrots.

Beetroot supplies nitrate, which the body can use to produce nitric oxide, a molecule that helps blood vessels relax. In a meta-analysis, beetroot juice lowered systolic blood pressure by about 5 mmHg on average compared with a control. Individual responses vary, and that average does not guarantee an effect throughout the day. Meta-analysis

This makes beetroot an interesting food-based approach to blood pressure. Studies suggest that regular juice or concentrated preparations can produce a modest, potentially useful reduction in systolic pressure in some people. It can complement other measures, but does not replace prescribed blood pressure medicines or clinician-led care.

Why researchers study beetroot for blood pressure

Beetroot, or Beta vulgaris, contains inorganic nitrate. Bacteria in the mouth convert some of it into nitrite, from which the body can produce nitric oxide, or NO. NO relaxes the smooth muscle in blood vessel walls. Organic nitrate medicines such as nitroglycerin also act through NO, but they are activated and used differently. Foods and these medicines are not interchangeable. History of nitrate medicines Dietary nitrate review

Dietary nitrate is absorbed and processed differently from nitroglycerin. Vegetables or juice can have a place in the diet; they are not a treatment for an episode of dangerously high blood pressure or chest pain.

What the research shows

A meta-analysis of seven trials involving 218 people with hypertension found an average systolic reduction of 4.95 mmHg compared with control. The 95% confidence interval ranged from a 1.01 to an 8.88 mmHg reduction. There was no clear benefit for diastolic pressure. The trials lasted 3–60 days. Results also depend on how blood pressure is measured: in one small study of older adults with overweight, systolic readings taken at home fell, but clinic readings and 24-hour monitoring did not show a significant improvement. Home-monitoring study Meta-analysis

A small reduction can be useful alongside other measures. Effective blood pressure treatment is known to prevent cardiovascular events. However, the medication trials supporting that conclusion do not demonstrate that beetroot juice itself prevents heart attacks or strokes. Blood pressure treatment meta-analysis

Forms, amounts, and timing

Beetroot juice

Trials in the meta-analysis used 70–250 mL of juice daily. This describes the research, not a universal dose: nitrate amounts and concentrations differed between products. For ordinary juice, growing conditions and processing also matter. To compare a product with a studied preparation, its stated nitrate content is more informative than bottle size. Meta-analysis

Concentrated beetroot shots

Concentrated shots provide nitrate in a smaller volume. The useful figure on the label is the nitrate content. Current trials do not establish a minimum amount that reliably lowers everyone’s blood pressure.

Whole beetroot, cooked or raw

Whole beetroot provides fiber and micronutrients as well as nitrate. It fits well into a vegetable-rich diet. Its nitrate content varies considerably with growing conditions and preparation, so a particular number of beets cannot reliably be equated with a study serving of juice.

Beetroot powder supplements

Dried beetroot powders vary substantially. Processing affects how much nitrate remains, and a powder’s weight alone does not reveal its nitrate content. Some nonstandardized smoothie powders may provide little nitrate. A label stating the amount makes comparison with studied products easier, but does not by itself establish equivalent effectiveness or overall product quality.

When to consume it

Oral bacteria take part in converting nitrate. Antibacterial mouthwash can interfere with this pathway; a small trial in people being treated for hypertension found a modest systolic rise after several days of use. That is not a reason to stop a prescribed dental rinse. Discuss relevant products with your dentist when necessary. No fixed time of day guarantees a particular blood pressure response. Mouthwash trial Oral nitrate pathway

Who might benefit most?

People with hypertension may achieve an additional small reduction, but responses vary within this group too. Research has not established a subgroup that reliably benefits most. If you take blood pressure medicines or tend to have low readings, discuss concentrated preparations with your clinician and monitor your blood pressure. Meta-analysis

Which biomarkers matter in hypertension?

Blood pressure is measured directly, not through a blood test. Laboratory tests can nevertheless identify contributing conditions and help assess cardiovascular health more broadly. The following list describes a hypertension assessment, not a special test package needed before eating beetroot.

  • Creatinine and eGFR: assess kidney function.

  • Fasting glucose and, when appropriate, HbA1c: help identify diabetes.

  • Blood lipids: contribute to cardiovascular risk assessment.

  • Sodium and potassium: inform investigation of causes and treatment.

  • Urinalysis and the urine albumin-to-creatinine ratio: look for kidney damage.

  • Hemoglobin and/or hematocrit, calcium, and TSH are also included in the 2024 ESC guideline’s routine initial assessment. High-sensitivity CRP, fasting insulin, and homocysteine are not part of its routine test list. The appropriate assessment depends on the clinical setting; an abnormal result may lead to more targeted investigation. ESC guideline

Frequently asked questions

How long does beetroot take to lower blood pressure?

A change within a few hours of a single serving was observed, for example, in a small study of healthy volunteers. Longer-term studies have examined daily consumption over days to weeks. This does not establish a guaranteed onset or a daily pattern that applies to everyone. Repeated blood pressure measurements are more useful than assuming a response. Meta-analysis

How much beetroot juice should I drink daily to lower blood pressure?

Studies used different products, including 70–250 mL of juice daily. This range describes the research rather than an individual prescription. Nitrate concentration matters; variable levels in whole beets mean there is no reliable equivalent number to eat. Meta-analysis

Can beetroot interact with blood pressure medicines?

An additional blood pressure reduction is possible. Discuss concentrated preparations with your clinician, especially if you already have low readings or take several medicines that dilate blood vessels. Do not reduce prescribed medication yourself. Strict interaction rules for organic nitrate medicines should not be applied unchanged to ordinary vegetable servings.

Does beetroot powder work as well as juice?

Nitrate content and processing vary widely. A stated nitrate content helps with comparison but does not prove that a powder works equally well. The stronger clinical evidence concerns standardized juices; it does not guarantee success with any particular supplement.

Is it safe to eat beetroot every day?

Most people tolerate beetroot well as a food. If you have calcium oxalate kidney stones, it may be useful to discuss amounts of high-oxalate foods with your clinician. Beet pigments can turn urine reddish. Unexplained, persistent, or painful red discoloration should still be assessed rather than automatically attributed to food. Dietary oxalate review Beet pigment study

What is the best time to have beetroot for blood pressure?

No particular time guarantees the best response. Oral bacteria help convert nitrate, and antibacterial mouthwash can disrupt that process. A small trial in treated hypertension found a modest systolic increase after several days of mouthwash use. Discuss a prescribed rinse with your dentist rather than stopping it yourself. Mouthwash trial Oral nitrate pathway

Who benefits most from beetroot for hypertension?

Some people with hypertension may obtain an additional small reduction. There is no reliably established “best responder” group. People taking blood pressure medication or prone to low readings should discuss concentrated preparations with their clinician and monitor their response. Meta-analysis

Which biomarkers are most important for someone with high blood pressure?

Alongside properly measured blood pressure, an assessment commonly includes kidney function, electrolytes, glucose, lipids, and urine testing. ESC also includes hemoglobin/hematocrit, calcium, and TSH in routine initial testing. These help identify coexisting disease and organ damage and guide treatment. Additional markers should answer a specific question rather than form an automatic comprehensive package. ESC guideline

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