Vitamin B, while harmless, does not help prevent a repeat occurrence of strokes or heart attacks, according to a study released Wednesday.
Vitamin B, while harmless, does not help prevent a repeat occurrence of strokes or heart attacks, according to a study released Wednesday. The findings, based on first-ever clinical trials, suggest that vitamin B supplements should no longer be recommended for patients who have suffered severe vascular events, the researchers said.
Previous research has shown a link between an increase of amino acid in the blood -- a condition known as homocysteine -- and a higher risk of stroke and cardiovascular disease.
At the same time, other studies have shown that a daily dose of B vitamins can reduce abnormal amino acid levels.
What remained unknown was whether the supplements would also help cut the risk of repeat heart attacks or strokes, fatal or non-fatal.
To find out, an international consortium of doctors and scientists in 20 countries conducted a clinical trial with more than 8,000 patients who had recently had a serious heart or vascular problem.
Half the participants were given a daily dose of B vitamins -- a mix of folic acid, B6 and B12 -- while the other half swallowed lookalike placebos.
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At the same time, the vitamins did not cause any unwanted side effects.
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Source-AFP