causal
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Beetroot juice works in the body of heart failure patients — it raises levels of chemicals that help blood vessels relax — even if it doesn’t help them exercise better after just one drink.
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.
Evidence from Studies
Supporting (1)
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The study gave older heart patients beetroot juice with the same amount of nitrate as the claim, and it proved the juice raised key blood chemicals linked to blood flow—even if it didn’t help right away. After a week, it helped them exercise longer too.
Contradicting (0)
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No contradicting evidence found