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Study confirms that moderate drinking reduces stroke risk. Similar to the way a drink or two a day protects against heart attacks, moderate alcohol consumption wards off strokes, a new study found. The study also found that the type of alcohol consumed—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 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 support 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 attacks is well established, but the data had been conflicting about alcohol and strokes, the authors said. The new study helps settle the question and is the first to find blacks and Hispanics benefit as well as whites, according to the authors. Further research is needed among other groups, such as Asian, whom past study suggested may get no stroke protection from alcohol or may even be put at greater risk. Among the groups where the protective effect exists, its mechanism appears to differ from the protective effect against heart attacks, which occurs through boosts in levels of so-called 'good' cholesterol, the authors said. They speculated alcohol might 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 strokes①. The researchers studied 677 New York residents who lived 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 nondrinkers②. Clot type strokes account for 80 percent of all strokes, a leading cause of the US deaths and disability. Stroke risk increased with heavier drinking. At seven drinks per day, risk was almost triple that of moderate drinkers. An expert spokesman for the American Heart Association, who was not involved in the study, said it was well-done and important information. But it shouldn't be interpreted to mean, 'I can have two drinks and therefore not worry about my high blood pressure or worry about my cholesterol,' said Dr. Edgar J. Kenton, an associate professor of clinical neurology at Thomas Jefferson University Medical College in Philadelphia. Instead, he said, the study provides good reason to do further research and to add alcohol to the list of modifiable risk factors for stroke. According to Dr. Sacco,______.
A.
different wines work differently on drinkers at stroke risk
B.
nondrinkers should also consume a moderate amount of alcohol
C.
drinkers should keep to one kind of alcohol to ward off strokes
D.
moderate alcohol consumption protects against strokes
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举一反三
【单选题】与中共一大相比较,中共二大最重要的贡献是确定了( )
A.
民主革命的纲领
B.
以工人运动为中心的任务
C.
为共产主义奋斗的目标
D.
民主集中制的组织原则
【单选题】与中共一大相比较,中共二大最重要的贡献是确定了
A.
以工人运动为中心任务
B.
在民主革命阶段的纲领
C.
民主集中制的组织原则
D.
为共产主义奋斗的目标
【单选题】SiH4 , NH4+ , BF4 ,其中心离子采用 sp3 杂化,具有相同的空间构 型为
A.
三角锥形
B.
四面体
C.
四边形
D.
正方形
【单选题】等产量线上某一点的切线的斜率等于( )。
A.
预算线的斜率
B.
等成本线的斜率
C.
边际技术替代率
D.
边际报酬
【单选题】以下属于滑动轴承的主要特点的是 。
A.
抗冲击性能好
B.
寿命短
C.
噪声大
【单选题】目前认为与鼻咽癌发病有关的病毒是
A.
鼻病毒
B.
EB病毒
C.
单纯疱疹病毒
D.
麻疹病毒
E.
巨细胞病毒
【单选题】等产量线上某一点的切线斜率等于( )
A.
预算线的斜率;
B.
等成本线的斜率;
C.
边际技术替代率;
D.
边际替代率;
【单选题】与中共一大相比较,中共二大最重要的贡献是确立了
A.
以工人运动为中心的任务
B.
在民主革命阶段的纲领
C.
民主集中制的原则
D.
为共产主义奋斗的目标
【单选题】等产量线上某一点的切线的斜率等于 ( ) 。
A.
边际替代率
B.
等成本线的斜率
C.
边际技术替代率
D.
预算线的斜率
【单选题】与中共一大相比较,中共二大最重要的贡献是确立了
A.
为共产主义奋斗的目标
B.
民主集中制的原则
C.
以工人运动为中心的任务
D.
在民主革命阶段的纲领
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