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  3. Moderate drinking reduces stroke risk, study confirms. Similar to the way a drink or two a day protects against heart attacks, m

Moderate drinking reduces stroke risk, study confirms. Similar to the way a drink or two a day protects against heart attacks, m

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问题     Moderate drinking reduces stroke risk, study confirms. Similar to the way a drink or two a day protects against heart attacks, moderate alcohol consumptions wards off strokes, a new study found.
    The study also found that the type of alcohol consumes—beer, wine or liquor—was unimportant. Any of them, or a combination, was protective, researchers reported in today’s Journal of the American Medical Association. "No study has shown benefit in recommending alcohol consumption to those who do not drink", cautioned the authors, led by Dr. Ralph L. Sacco of Columbia University College of Physicians and Surgeons in New York. But the new data supports the guidelines of the National Stroke Association, which say moderate drinkers, may protect themselves from strokes by continuing to consume alcohol, the authors said.
    The protective effect of moderate drinking against heart attack is well established, but the data has been conflicting with alcohol and strokes, the author said. The new study helps settle the question and is the first to find blacks and Hispanic benefit as well as whites, according to the authors. Further research is needed among other groups, such as Asian, who past studies suggest may get no stroke protection from alcohol or may even be put at greater risk.
    Among groups where the protective effect exists, its mechanism appears to differ from the protective effect against heart attacks, which occurs through boosts in level of so-called "good" cholesterol, the authors said. They speculated alcohol may protect against stroke by acting on some other blood trait, such as the tendency of blood platelets to clump, which is key in forming the blood clots that can cause strokes.
    The researchers studied 677 New York residents who live in the northern part of Manhattan and had strokes between July 1, 1993, and June 1997. After taking into account differences in other factors that could affect stroke risk, such as high blood pressure, the researchers estimated that subjects who consumed up to two alcoholic drinks daily were only half as likely to have suffered clot-type strokes as non-drinkers. Clot-type strokes account for 80 percent of all strokes, a leading cause of US deaths and disability. Stroke risk increased with heavier drinking. At seven drinks per day, risk was almost triple that of moderate drinkers.
The new study conducted by Dr. Sacco and his colleagues is unique in that______.
选项 A、it refutes early studies on the protective effect of moderate drinking against heart attacks
B、it confirms early studies of moderate drinking against heart attacks
C、it finds that moderate drinking can benefit people of different races equally well
D、it helps to resolve the disputes over the effect of moderate drinking against strokes
答案C
解析 细节题。根据第三段The new study helps settle the question and is the first tofind blacks and Hispanic benefit as well as whites．according to the authors．“新的研究确定了饮酒和中风的关系，而且首次发现黑人和西班牙裔像白人也能同样受益。”说明节制的饮酒有益于不同种族的人，所以选C。
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