Synopsis

Source of validity: Scientific
Rating (out of 5): 2

White tea (Camellia sinensis) has been investigated for its potential cardiovascular benefits due to its rich content of polyphenols, particularly catechins and flavonoids, which have antioxidant, anti-inflammatory, and vasodilatory properties. Several in vitro and animal studies have demonstrated that white tea extracts can reduce oxidative stress, inhibit LDL cholesterol oxidation, and improve endothelial function, all of which are relevant to the prevention of cardiovascular disease (CVD). A few small-scale human studies and randomized controlled trials on green and black tea (which are from the same plant as white tea) have shown modest benefits in lowering blood pressure and improving lipid profiles, but specific high-quality human clinical data on white tea itself remain limited. Some epidemiological evidence suggests a correlation between tea consumption and reduced risk of cardiovascular events, although it is challenging to isolate the effects of white tea specifically due to overlapping consumption with other types of tea. Overall, while the underlying mechanisms are biologically plausible and supported by preclinical work, robust clinical trials directly examining white tea’s effects on cardiovascular outcomes in humans are lacking. Thus, evidence supporting white tea for cardiovascular disease is promising but remains preliminary and incomplete.

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