Vitamin B linked to small reduction in stroke risk: study

A meta-analysis of 14 randomised trials involving a total of nearly 55,000 patients, by researchers from Zhengzhou University, China, found a 7% reduced risk of stroke events, resulting from lower homocysteine levels, with use of vitamin B. However, there was no evidence of reduced mortality.

The researchers said the effect of vitamin B supplements was complicated by factors including comorbidities such as chronic kidney disease, use of antiplatelets and consumption of folate-fortified cereals.

Vitamin B12 alone was not protective.