The study of nearly 2000 people between 1993 and 1997 found that
participants who consumed up to two drinks a day were at 45% lower
risk than non-drinkers of suffering an ischemic stroke. Importantly
"The protective effect was found in both younger and older groups,
in men and women, in whites, blacks and Hispanics even after adjusting
for other risk factors for stroke such as heart disease, high
blood pressure, diabetes, current smoking and obesity".
Those who consumed above seven drinks a day, however, tripled
their risk of ischemic stroke, although as soon as consumption
was lowered to within the two drink thres-hold the increased risk
subsided. The data supports The US National Stroke Association stroke prevention guidelines that cite the beneficial effects
of moderate alcohol consumption.
The second study, reported in Stroke, vol 29, no.12 looked at 13,000 men and women aged between 45 and 84 years, taking
part in The Copenhagen City Heart Study. Truelson M.D. et al of The Institute of Preventative Medicine, Copenhagen studied the participants intake of beer wine and
spirits and concluded that wine specifically was associated with
a lower risk of stroke. The sixteen year study found that participants
who drank wine regularly and moderately had a 30% reduction in
risk, which was not found for beer and spirits. The researchers
believe the protective effect of wine may be due to drinking pattern
ie it being consumed at meal times whereas beer and spirits tend
to drunk alone. The former study found a reduction of risk for
all forms of alcohol.