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“坏胆固醇”并非总是很“坏”
发布时间:2011-05-13 02:34     来源:君健网

    多项医学研究显示,被称为“坏胆固醇”的低密度胆固醇在血液中的水平过高会对身体造成伤害,但美国和加拿大研究人员日前公布的一项最新研究显示,“坏胆固醇”并非总是很“坏”,它对人体也有一定用处。

    研究人员在最新一期《老年病医学杂志》上报告说,他们选取了52名60岁至69岁健康但平时不喜欢运动的志愿者,并安排这些人参加较为剧烈的运动。随后研究人员检测了他们血液中的胆固醇含量,并将检测结果与他们运动前的胆固醇水平进行对比分析。

    分析显示,在运动后肌肉增长最多的志愿者血液中,“坏胆固醇”水平往往增长最多。研究人员指出,研究证明,血液中的“坏胆固醇”越多,人们在训练中就越能增长肌肉。换句话说,人体需要一定的“坏胆固醇”以获取更多肌肉。

    胆固醇由低密度胆固醇和高密度胆固醇组成。低密度胆固醇之所以被称为“坏胆固醇”,是因为它会在动脉血管壁上堆集,造成血流减慢,从而可能导致心血管疾病。而高密度胆固醇之所以被称为“好胆固醇”,是因为它能帮助清理血管中的“垃圾”。

    参与这项研究的美国得克萨斯农业与机械大学教授史蒂夫·里歇曼说,人的身体不仅需要“好胆固醇”,而且也需要适量的“坏胆固醇”,如果硬要将“坏胆固醇”从身体中清除出去,则可能对身体造成伤害。除了有助于增加肌肉外,“坏胆固醇”所起的另一个有益作用是向人们传送信号,警告身体有问题发生。

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