Vitamin C in plasma is inversely related to blood pressure and change in blood pressure during the previous year in young Black and White women.

Nutr J · 2008 · PMC2621233 · PMID 19091068

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highly significantno p-value reported

Numerous cross-sectional studies have observed highly significant inverse relationships between BP and circulating ascorbic acid concentration [ 8 - 18 ].

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.