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SCIENTIFIC RESEARCHalcohol and body 21/11/2001 Moderate drinking protects against strokes, but not against brain haemorrhage It is a known fact that a light to moderate alcohol consumption reduces the risk of a stroke. However, a distinction is made between two categories of stroke according to the cause. The first and larger category is caused by a shortage of oxygen in the brain as a result of the sudden closure of a blood vessel in or leading to the brain by advanced atherosclerosis or by a blood clot. The second category occurs after a brain haemorrhage. The question is whether moderate drinking protects against both categories or against one or the other separately. The answer is beginning to emerge from the results of a prospective research, in which more than 22 000 male physicians between age 40 and 84 took part. Their drinking patterns were mapped and tracked for an average of 12.2 years. During that period of time 679 participants were confronted with a stroke. The results of the analysis indicate that light-to-moderate drinking protects against the bigger category of strokes, that is, the group resulting from the sudden closure of a blood vessel. On the other hand, there was no discernible effect of moderate drinking as regards prevention of brain haemorrhages. Another interesting fact is that no difference was found between the positive effects of light drinking (a few units per week) and moderate (a few units per day) as regards the prevention of strokes. In other words, if you drink two glasses a day or one glass a week, the beneficial effect is practically the same. source: K. Berger et al, Light-to-moderate alcohol consumption and the risk of stroke among US male physicians. New Engl J Med 1999;vol.341:1557-1564. | |
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