反式脂肪酸危害被夸大 国民摄入量远低西方国家
2010年多家主流媒体报道了反式脂肪酸存在很大的健康风险,称“反式脂肪酸是餐桌上的定时炸弹”,引起业内和公众的极大震动。在2013年3月18日国家食品安全风险评估中心举办的主题为“反式脂肪酸的功过是非”的第六期开放日活动上,国家食品安全风险评估中心李建文副研究员基于反式脂肪酸风险评估报告,对“中国人的摄入水平有没有问题?”进行了专家解读。
反式脂肪酸是碳链上含有一个或多个“非共轭反式双键”的不饱和脂肪酸及所有异构体的总称。食品中反式脂肪酸有两种来源,即加工来源和天然来源。,反式脂肪酸最主要的来源是氢化植物油,液态植物油起酥效果并不好,但经过氢化,它在常温下就是半固体,可以满足工艺和口感要求。 现有资料表明过量摄入反式脂肪酸可增加患心血管疾病的风险,但尚无明确证据表明反式脂肪酸与早期生长发育、2型糖尿病、高血压、癌症等疾病有关
根据评估结果显示,中国人通过膳食摄入的反式脂肪酸所提供的能量占膳食总能量的百分比仅为0.16%, 远低于世界卫生组织建议的1%的限值,也显著低于西方发达国家居民的摄入量。由此可见,之前媒体的报道大大夸大了反式脂肪酸对当前中国居民的健康风险。
现有资料表明过量摄入反式脂肪酸可增加患心血管疾病的风险,但尚无明确证据表明反式脂肪酸与早期生长发育、2型糖尿病、高血压、癌症等疾病有关 虽然,目前我国居民反式脂肪酸摄入量总体较低,但调查发现约0.4%的城市居民摄入量超过世界卫生组织的建议值 因此业界、政府、科学界和消费者都应当给予适当关注,不能认为“太平无事”。
,食物多样化、平衡膳食、适量运动是保证健康的基础。消费者要合理搭配膳食,比如威化饼干、夹心饼干、奶油蛋糕、派等焙烤食品中的反式脂肪酸含量较高,不要每天吃。同时,不应忽视食物中饱和脂肪对健康的影响,从中国居民的脂肪摄入现状来看,其饱和脂肪带来的健康风险更加需要关注。
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