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Strong Opposition

Drinking beetroot juice once can temporarily make blood flow better in the arms of older people with high blood pressure, but if they drink it every day, that boost goes away after a while.

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Pro
58
Against

Evidence from Studies

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No supporting evidence found

Contradicting (1)

58

Community contributions welcome

58

Increased nitrate intake from beetroot juice over 4 weeks affects nitrate metabolism, but not vascular function or blood pressure in older adults with hypertension

Randomized Controlled Trial
Human
2024 Apr 22

The study gave older adults with high blood pressure beetroot juice with lots of nitrate, both once and every day for a month, and checked if their blood flow improved. It found no improvement at all — not even right after the first dose — which means the claim that the first dose helps is wrong.

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Increased nitrate intake from beetroot juice over 4 weeks affects nitrate metabolism, but not vascular function or blood pressure in older adults with hypertension

Score: 58
DOI: 10.1039/d3fo03749e

Similar Assertions

Drinking beetroot juice every day for a month, with about 800 mg of natural nitrates, doesn’t seem to make blood vessels in the arms work better or worse in older people who are already taking medicine for high blood pressure.

58
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93%

If older adults with high blood pressure drink beetroot juice every day for a month, their body shows more of certain chemicals in their blood and saliva that help relax blood vessels — which means their body is using a natural pathway to make nitric oxide.

58
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91%

Drinking beetroot juice every day for a month is safe for people with high blood pressure—it doesn’t cause any dangerous side effects, and the only harmless things you might notice are pink urine or oddly colored poop.

82
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90%

Researchers gave women a drink with 400 mg of nitrate (from beetroot juice) to see how it affected their blood pressure and nitrate/nitrite levels.

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89%

Drinking beetroot juice with 800 mg of nitrate after working out might lower blood pressure by about 9 points in women over 50 who have high blood pressure, helping their heart recover better.

60
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88%