Evidence supporting the use of: Flavans
For the health condition: Heart (weakness)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Flavans are a subgroup of flavonoids, a class of polyphenolic compounds found abundantly in various fruits, vegetables, tea, cocoa, and wine. The cardioprotective effects of flavonoids, including flavans (such as catechins and epicatechins), have been extensively studied. Scientific evidence suggests that flavans can support cardiovascular health through several mechanisms. These include improving endothelial function, reducing blood pressure, decreasing oxidative stress, and inhibiting platelet aggregation. Clinical studies have shown that consumption of flavan-rich foods like dark chocolate and green tea is associated with improved vascular function and reduced risk of heart disease. For example, randomized controlled trials have demonstrated that cocoa flavanols can enhance flow-mediated dilation (a marker of vascular health) and may modestly lower blood pressure.

However, while epidemiological and interventional studies support a beneficial role for flavans in cardiovascular health, most evidence pertains to the prevention of cardiovascular disease rather than the treatment of existing heart weakness or heart failure. The strength of the evidence is moderate (rated 3), as effects are generally small to moderate and primarily observed in populations with mild to moderate cardiovascular risk, not in those with advanced heart disease. Therefore, while scientific validation exists for flavans in supporting heart health, their use as a direct treatment for "heart weakness" is less substantiated.

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Products containing flavans

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