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News - Vitamin C Benefits Blood Pressure

By Holly Taylor BSc (Hons) DipCNM MBANT NTCC

Approximately 16 million people in the UK have high blood pressure (hypertension), though approximately one third don’t know they suffer from the condition. People with high blood pressure are three times more likely to develop heart disease and stroke and twice as likely to die from these as people with a normal blood pressure. Fortunately, a new meta-analysis published in the American Journal of Clinical Nutrition has reported that supplementation with vitamin C may help reduce blood pressure, especially in those with pre-existing hypertension.

To carry out the new analysis, researchers pooled data from 29 clinical trials. The median dose of vitamin C was calculated to be 500 milligrams and the median trial duration eight weeks. When the pooled data was analysed, the scientists found that vitamin C supplementation was associated with a significant reduction in both systolic and diastolic blood pressure, with greater reductions observed in people with hypertension.

The researchers are now calling for longer-term trials to help further evaluate these beneficial effects.  


Article References

Juraschek SP et al. Effects of vitamin C supplementation on blood pressure: a meta-analysis of randomized controlled trials. Am J Clin Nutr. 2012 May;95(5):1079-88.

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