肥胖—脂肪的量vs质,谁是凶手?

2015-07-09 沐晴 MedSci原创

在2015美国饮食指南公布之前,研究者就呼吁?美国政府降低推荐摄入量中对总脂肪摄入量的限制。近来许多饮食营养方面的讨论都集中在,美国饮食指南协会(GDAC)的一项推荐——素食比肉食更环保,含糖零食和饮料会改善饮食。但是,近来有研究认为,不应该太在意GDAC的限制脂质摄入量的推荐。 首先,在1980年,GDAC的科技报道中并没有推荐限制总脂质量的摄入。“我们想要强调的是,关注脂质的质量要比脂质

2015美国饮食指南公布之前,研究者就呼吁?美国政府降低推荐摄入量中对总脂肪摄入量的限制。近来许多饮食营养方面的讨论都集中在,美国饮食指南协会(GDAC)的一项推荐——素食比肉食更环保,含糖零食和饮料会改善饮食。但是,近来有研究认为,不应该太在意GDAC的限制脂质摄入量的推荐。

首先,在1980年,GDAC的科技报道中并没有推荐限制总脂质量的摄入。“我们想要强调的是,关注脂质的质量要比脂质的量更重要。近来研究表明,与脂质的量相比,脂质的分子结构危害更大。”专家指出,“限制脂质的量没有依据,且易导致商家和消费者在营养摄入方面出现选择错误”。

现代的医学证据表明,增加健康的脂质,如:坚果、蔬菜籽、鱼中的脂质的摄入,对心血管疾病有保护意义。”其他富含脂质的食物,如全脂牛奶和奶酪,则是“中立”的;然而其他低脂的食物,像低脂熟食肉类,无脂沙拉,烤土豆条,常常不比某些全脂食物好,有的反而更糟糕。关键在于食物种类的选择,而不是食物的量。

当饮食指南开始推荐低脂饮食时,低脂或无脂质食物的消费明显增多。这些食物常常含精粮和过多糖分,易引起代谢紊乱和肥胖。

所以,专家呼吁饭店和食品生产商重新调配自己的产品结构,增加健康脂质,减少反复加工提炼的精粮成分。“从农户到食品生产者,从学校的标准餐到饭店,GDAC曾提出无数的饮食建议。”Dr.Mozaffarian 认为“随着慢性病和肥胖症对全民健康的危害逐步加深,我们必须把握此机会,倡导改善食物供应及饮食结构。”

当然,有人提出异议:去除对脂质摄入量的限制,并不能使消费者自主的形成均衡的健康饮食习惯。如果没有指南指导每日脂质摄入量的话,人们可能会吃的更多,结果导致饮食中的粗纤维、全谷物碳水化合物、瘦肉蛋白摄入的更少。

So,控制脂质摄入量PK优选高质量脂质,“元芳,你怎么看?”

参考出处:http://www.medicalnewstoday.com/articals/295905

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    2015-07-15 qingfengqishi5

    收藏了

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=32821, encodeId=f3763282135, content=收藏了, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzTetibytbqFDmFITWHyBWbxU7S9MYibgPSqvu0sYteH0N6zXqbU0Kf3Mbdb7yWM1Kud3zPgYBibE2SZ/0, createdBy=da7696924, createdName=qingfengqishi5, createdTime=Wed Jul 15 11:54:00 CST 2015, time=2015-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=32530, encodeId=71e1325303a, content=有意思, beContent=null, objectType=article, channel=null, level=null, likeNumber=115, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d0f31631005, createdName=保守主义, createdTime=Mon Jul 13 00:00:00 CST 2015, time=2015-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=32531, encodeId=a2db3253178, content=咋办, beContent=null, objectType=article, channel=null, level=null, likeNumber=127, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d0f31631005, createdName=保守主义, createdTime=Mon Jul 13 00:00:00 CST 2015, time=2015-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=32469, encodeId=845932469e9, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Sun Jul 12 16:41:00 CST 2015, time=2015-07-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=32370, encodeId=5836323e0a3, content=比较纠结噶, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a7311615220, createdName=lyrichen, createdTime=Sat Jul 11 17:14:00 CST 2015, time=2015-07-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=32257, encodeId=ccda3225e8b, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyhRUzmFEmHvdIaOns4DmF3BicVffXjkOjBTiaMUIA4o7feGvE5IJ0SfSco4ib955Rx7bvWlib7j9V15xp/0, createdBy=814d1631326, createdName=cmn, createdTime=Fri Jul 10 14:37:00 CST 2015, time=2015-07-10, status=1, ipAttribution=)]
    2015-07-13 保守主义

    有意思

    0

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    2015-07-13 保守主义

    咋办

    0

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    2015-07-12 huaxipanxing

    看看

    0

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    2015-07-11 lyrichen

    比较纠结噶

    0

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    2015-07-10 cmn

    看看

    0

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