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阜外医院研究称,中老年人多吃水果蔬菜有降低血脂功效

2018-06-05 xujing 中国循环杂志

中国医学科学院阜外医院李潇,李莹等研究显示,平时吃水果及蔬菜较多的居民,3~4年间血清总胆固醇(TC)和低密度脂蛋白胆固醇(LDL-C)有降低趋势。

中国医学科学院阜外医院李潇,李莹等研究显示,平时吃水果及蔬菜较多的居民,3~4年间血清总胆固醇(TC)和低密度脂蛋白胆固醇(LDL-C)有降低趋势。

作者称,水果及蔬菜中含有丰富的黄酮类化合物和膳食纤维。有研究证明,黄酮类可以降低血清TC、LDL-C和甘油三酯(TG)水平,升高高密度脂蛋白胆固醇(LDL-C)水平。还有研究称,膳食纤维能降低血清TC、LDL-C水平。

该研究中,水果摄入<250、250~499、≥500 g/周组人数分别占24.0%、21.8%、54.2%;蔬菜摄入<500、≥500 g/d组人数分别占76.7%、23.3%。

本研究70%的人水果摄入量小于2公斤/周(143 g/d),该水平远低于2016年中国居民膳食指南建议(200~350 g/d)。

研究者计算了两次调查的血脂变化情况。

结果发现,以水果摄入量<250 g/周为参照,250~499 g/周和≥500 g/周的居民总胆固醇下降了1.54%和1.77%,LDL-C下降了2.43%和2.89%。

以蔬菜摄入量<500 g/d组为参照,≥500 g/d组总胆固醇下降了1.01%,LDL-C的LDL-C下降了1.83%。不同水果、蔬菜摄入量与胆固醇和LDL-C无关。

研究共分析4 495人,平均年龄52.6岁,男性占45.1%。在2004年和2007-2008年进行了水果蔬菜摄入量与血脂变化关系的调查。

原始出处:
李潇, 李莹, 李建新, 等. 中老年人群水果蔬菜摄入量与血脂水平变化的关系. 中华预防医学杂志, 2018,52(4):383.


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