Beetroot juice can control high BP, finds study: Here's how to prepare this healthy drink without harming your kidneys

For years, doctors and nutritionists have recommended fruits and vegetables as a natural way to manage blood pressure and overall heart health. But now, a growing body of scientific research points to one humble root vegetable in particular as a powerful ally against hypertension.

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It’s beetroot!

High blood pressure, or hypertension, is a silent killer that affects millions worldwide, often without obvious symptoms. Left unmanaged, it can lead to serious health issues such as heart attack, stroke, and kidney damage. While medication remains essential for many patients, lifestyle changes, especially diet, can make a significant difference. Beetroot juice is emerging as one such simple, at-home remedy.

Packed with dietary nitrates that turn into nitric oxide in your body, this bright-red juice relaxes blood vessels and can significantly lower systolic blood pressure, sometimes by as much as 7-12 mmHg, as per clinical trials. According to a recent study, drinking beetroot juice daily may help lower high blood pressure naturally, thanks to its high concentration of nitrates, which the body converts into nitric oxide. This compound relaxes and widens blood vessels, improving blood flow and reducing strain on the heart.

But as with any health trend, it’s important to understand both the benefits and the risks. For example, too much nitrate or oxalate may pose risks, especially to kidney health, if not prepared with care.

Studies show that beetroot juice, rich in dietary nitrates, helps lower blood pressure. A 2022 meta-analysis found that beetroot juice reduced systolic pressure by about 3.5 mmHg and diastolic pressure by around 1.3 mmHg in diverse participants. Specifically, randomized trials report reductions of 7-12 mmHg systolic BP in people with hypertension, obesity, or kidney disease.

In older adults, a University of Exeter study revealed that consuming nitrate-rich beetroot juice twice daily for two weeks reduced blood pressure, only in older participants, by altering the oral microbiome to favor nitrate-converting bacteria. This mechanism underscores how gut and mouth health tie into blood pressure regulation.

Beetroot juice is naturally rich in nitrates, which your body converts into nitric oxide, a potent molecule that relaxes and widens blood vessels, lowering blood pressure. Importantly, even moderate daily servings (70-250 mL) have shown benefit, with effects sometimes beginning within hours but becoming more pronounced with continual use.

To enjoy beetroot juice safely and protect your kidneys, follow these steps:

Use fresh, well-washed beets: Wash and peel thoroughly to remove soil and possible heavy metals like cadmium or lead, as beetroot can accumulate these.

Control portion size: Drink no more than 250 mL (about one cup) per day to gain benefits without overloading on nitrates or oxalates, both can stress kidneys or raise stone risk.

Add vitamin C to reduce harmful byproducts: Mixing lemon juice can help prevent the formation of nitrosamines, potential carcinogens formed from nitrates.

Cook lightly if sensitive: Light steaming before juicing can reduce oxalate levels and make the juice milder for people prone to kidney stones or digestive discomfort.

Stay hydrated and moderate sugar: Rinse the juicer and drink water afterward. Avoid store-bought beet shots with added sugars and sodium, so opt for fresh prep.

If you want to harness beetroot’s blood pressure-lowering powers without harming your kidneys, preparation and portion size are key. Here’s a step-by-step guide:

Ingredients:

1-2 medium fresh beetroots (washed and peeled)

1 small apple or carrot (optional, for sweetness)

½ lemon (for vitamin C and better absorption)

A small piece of ginger (optional, for digestion)

1 cup of water

Method: Chop beetroots into small pieces. Add all ingredients to a blender or juicer. Blend until smooth. If needed, strain for a thinner juice. Serve immediately, as nitrate levels reduce when juice is stored too long.

Stick to 1 glass (about 250 ml) per day. This provides enough nitrates without overwhelming the kidneys.

Drink it fresh: Don’t store beetroot juice for more than 24 hours.

Pair with citrus. Adding lemon helps preserve antioxidants and improves taste.

Alternate days if at risk. People with kidney issues or prone to stones should limit intake to 2-3 times a week.

Best time to drink: Morning and early afternoon. Have your juice first thing or before lunch for a gentle dip in blood pressure.

Pre-workout boost: The nitric oxide may also enhance blood flow during exercise, increasing stamina.

Pair with meals: Including beet juice alongside other vegetables may amplify nutrient absorption and vascular benefits.

While blood pressure control is the highlight, beetroot juice offers several other science-backed benefits:

Boosts stamina and exercise performance: Nitrates improve oxygen efficiency, which is why many athletes drink beetroot juice before workouts.

Supports heart health: Its anti-inflammatory and antioxidant properties help protect blood vessels from damage.

Improves digestion: Beetroot juice is a natural source of fiber and promotes gut health.

Enhances brain function: Studies suggest nitric oxide improves blood flow to the brain, potentially lowering dementia risk.

Despite its benefits, beetroot juice is not risk-free. The high nitrate content that helps with blood pressure can also put stress on the kidneys if consumed excessively. People prone to kidney stones should be especially cautious, since beets are rich in oxalates, compounds that can crystallize in the kidneys.

Other possible side effects include:

Beeturia: Red or pink urine after drinking beet juice, which is harmless but surprising.

Stomach upset: In some people, too much juice can cause bloating or diarrhea.

Interaction with medication: Those already on blood pressure-lowering drugs or blood thinners should consult a doctor before adding daily beet juice to their routine.