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Statins are a class of drugs that work to decrease the level of cholesterol
Statins are a class of drugs that work to decrease the level of cholesterol
游客
2025-04-03
11
管理
问题
Statins are a class of drugs that work to decrease the level of cholesterol in the blood. They are able to perform this function by effectively blocking the cholesterol -producing enzyme in the liver. In recent years, statins have increased in utility and popularity. Although a certain amount of cholesterol is imperative for the human body to function, an elevated level can cause a precarious situation in the body. Cholesterol affixes itself to arteries, lining them and inhibiting blood flow. Since less blood can travel through those encumbered arteries, the blood flow to the heart is adversely affected. Scientists have found that the walls of arteries in the body can become inflamed from this plaque buildup. In many instances, the end result of this decreased blood supply and inflammation is a heart attack — sometimes a fatal one. In other, cases the blood supply to the brain is compromised by file plaque, often causing a stroke. Decreased blood flow to the legs can cause leg palms or cramps. In short, arterial plaque buildup is never a healthy situation.
Statins diminish the amount of cholesterol generated by the b body. Although the drugs are not always able to reduce the amount of plaque that may already be clogging arteries, they can slow the production of new plaque. The drugs are also able to stabilize the plaques that are already present and make them less likely to cause problems in the body. Lowered cholesterol does not guarantee that a heart attack won’t occur, but statin use will lower the risk for most patients. Not everyone who has a heart attack has high cholesterol levels, but most do have plaque formations on their arteries. It should be noted that the plaque is not always formed by high levels of cholesterol in the blood. Statins are generally prescribed by doctors for people with elevated cholesterol levels. As the mean weight of the American population has risen, so has the number of individuals with high cholesterol. Millions of men and women in this country are prescribed statins in an effort to decrease the amount of cholesterol in their blood. Remarkably, these effects eau be seen in as little as two weeks after beginning a statin regime. [br] The author’s main point is that______.
选项
A、statins can diminish the amount of cholesterol in the blood
B、heart attacks are not the only danger of high cholesterol
C、most people have plaque buildup in their arteries
D、statins are not able to decrease the amount of plaque lining the arteries
答案
A
解析
主旨题。作者的主要观点就是说明statin能够减少血液中的胆固醇。B“高胆固醇不仅仅只造成心脏病”,如果说的是这个,那么文章会介绍高胆固醇引起的其他后果,但是文章没有,故不正确:C“大多数人动脉中都有血小板堆积”,文中没有提及;D“stains不能减少动脉中的血小板含量”,与文章内容不符,排除。因此选A。
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