Synopsis

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

Black currant (Ribes nigrum) is used to support capillary health, and there is a moderate amount of scientific evidence that supports its potential benefits for the vascular system. Black currant is rich in anthocyanins and flavonoids—phytochemicals known for their antioxidant and anti-inflammatory effects. Several in vitro and animal studies have demonstrated that these compounds can help protect endothelial cells, reduce oxidative stress, and improve capillary integrity. Some small human studies also suggest that black currant extract may enhance peripheral blood flow and reduce capillary fragility, likely by supporting nitric oxide production and reducing inflammation.

For example, a 2013 randomized, double-blind, placebo-controlled study found that black currant anthocyanin supplementation improved peripheral circulation in healthy women. Other studies have shown that black currant extract may reduce markers of vascular inflammation and improve microvascular function. However, while these findings are promising, the body of clinical evidence is still limited and more large-scale, well-controlled human trials are needed to firmly establish efficacy for capillary support.

In summary, black currant's use for capillary health is supported by a growing but not yet definitive body of scientific literature, mainly due to its high anthocyanin content and observed effects on vascular function in preliminary studies.

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