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Hum reprod update:膳食如何影响男性生育能力—营养成分对精液质量的影响分析

2017-06-27 qinqiyun MedSci原创

不孕不育,是全球公众健康问题,影响15%的育龄夫妻。在男性方面,精子质量下降占比25%。现研究认为,膳食中的营养成分是精子功能的重要决定因素。

不孕不育,是全球公众健康问题,影响15%的育龄夫妻。在男性方面,精子质量下降占比25%。现研究认为,膳食中的营养成分是精子功能的重要决定因素。目前,已有对几个小样本的研究特定营养成分对男性不育的影响的多相性低质量随机化临床试验的系统回顾,但尚没有对于观察性研究的系统回顾。对可在网络上获得的2016年11月前发表的文献进行一个综合的系统回顾,囊括的研究有针对健康或不育的男性的横向交叉、病例对照、预测性和回顾性研究。主要评估指标是精液质量或生育能力。经过数据提取,对挑选的文献质量予以评估,排除随机对照试验、动物研究、综述和低质量的研究。一共筛查了1944篇文献,挑选了其中35篇来进行质量分析。研究结果普遍表明饮食中某些营养素占比高,如Ω-3脂肪酸、抗氧化剂(维生素E、维生素C、β胡萝卜素等)、其他维生素(维生素D和叶酸)和低量的饱和脂肪酸、转化型脂肪酸与低质量的精液参数呈反相关。鱼类、贝类、海产品、禽类、谷类、蔬菜水果、低脂奶制品和脱脂牛奶与精液质量的几项参数均呈正相关。另外在这些研究中发现膳食中高量的过度加工的肉、黄豆类食物、土豆、全脂奶制品和纯奶制品、奶酪、咖啡、酒精、添加食糖的饮料和

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    2017-06-29 hb2008ye
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    2017-06-29 zhaojie88
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    2017-06-29 sunylz

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了解饮食习惯对于减少饥饿人口(约7.95亿),微量营养素缺乏人口(20亿)和超重或肥胖人口(21亿)的人数至关重要。有研究通过估算食品供应的微量营养素密度,普遍存在14种微量营养素的摄入量不足,1961年至2011年间所有国家摄入量不足的平均水平,来描述全球饮食质量趋势。在这50年期间,估计由于粮食和/或微量营养素密度的总量增加,所有地区的微量营养素摄入量不足的流行率下降。东亚和东南亚的这种下降特

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