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【单选题】
研究成果表明，血液中高密度脂蛋白胆固醇含量较低的人要比那些含量高的人更容易出现记忆力缺陷，前者发生记忆力缺陷的几率要比后者高出27%。同时，高密度脂蛋白胆固醇能够将血管中的血脂运到肝脏中处理掉，有效防止心脏病和其他心血管疾病，而低密度脂蛋白胆固醇会把肝脏中的血脂运到血管里，诱发疾病。由此，可以推知( )
A.
胆固醇含量高对人体健康有害
B.
血脂较低的人一般来说较健康
C.
高密度脂蛋白胆固醇有降低血脂的作用
D.
记忆力有缺陷的人血液里高密度脂蛋白胆固醇含量较低
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