New Information Indicates B Vitamins don't Prevent Heart Attacks
Two recent studies have indicated
that there may be little truth to the widely accepted notion that B vitamins-including
folic acid, vitamin B12 and vitamin B6-can help prevent heart attacks and
The theory was that the B vitamins
could protect against an amino acid called homocysteine. Many experts believed
that homocysteine was an important risk factor for heart attacks, because
studies had shown high levels of the substance in people who had had heart
attacks and strokes.
The new studies showed, however,
that while the homocysteine levels of people who took B vitamins did go down
considerably, those participants had about the same number of heart attacks
and stroke. More research is needed, but for now, there's less reason to believe
that B vitamins offer heart health protection.
The New England Journal of Medicine, 13 April 2006