美国《消费者报道》:服用膳食补充剂得不偿失

2016-08-01 卢芳 中国循环杂志

怎样才能让自己体型更健美,身体更健康?很多人或许考虑补充含有维生素、氨基酸等之类的膳食补充剂,不过近期美国《消费者报道》提醒说,这类膳食补充剂的危害比获益大,服之得不偿失。 首先,这些膳食补充剂的安全性和有效性得不到保障。美国食品药品管理局(FDA)将膳食补充剂列为食品管理,而非药物管理,因此管理并不严格,上市前也不必提供安全性或有效性证据。监管不严,安全性或有效性打折。 此外

怎样才能让自己体型更健美,身体更健康?很多人或许考虑补充含有维生素、氨基酸等之类的膳食补充剂,不过近期美国《消费者报道》提醒说,这类膳食补充剂的危害比获益大,服之得不偿失。

 

首先,这些膳食补充剂的安全性和有效性得不到保障。美国食品药品管理局(FDA)将膳食补充剂列为食品管理,而非药物管理,因此管理并不严格,上市前也不必提供安全性或有效性证据。监管不严,安全性或有效性打折。

 

此外,一些膳食补充剂中还含有不该有的物质,比如重金属、处方药物、试验药物甚至非法药物。而这潜在地会造成器官受损、肿瘤、心血管疾病等问题。

 

比如颇受爱美人士青睐的铬元素膳食补充剂,而澳大利亚学者进行的研究就发现,这种补充剂,即使是三价铬,也一点都不安全,进入人体后会部分转化为致癌物。

 

以前人们认为六价铬是强氧化剂不利于身体健康,而三价铬为人体所需,同时还可增强胰岛素和口服降糖药的降糖效果,但研究人员发现,三价铬进入人体细胞后,会在一定程度上被氧化而变得具有致癌性。

 

另外,部分膳食补充剂的副作用也不可忽视,或还可使处方药效果降低。

 

其实,说膳食补充剂不好也不是第一次了,去年一项发表在《新英格兰医学杂志》上的研究就表明,美国每年有2.3万人次因服用膳食补充剂而进了急诊室。

 

这些进入急诊室的有28%的是20~34岁的年轻人,其中有一半是为了减肥或补充能量而吃了些这类和保健品差不多的膳食补充剂,他们主要是因为服用后出现心悸、胸痛或心动过速等而就医。

 

还有就是12%65岁以上的老年人,其中六成人除了由于膳食补充剂药物作用前往急诊外,还有40%是因为膳食补充剂做得太大给“噎住了”。此外,21%5岁以下儿童,因无人看管误服了。

 

不论如何,这些膳食补充剂一而再,再而三地被“提溜”出来,说明还是很有隐患的。这里提一句,美国称之为膳食补充剂者,和中国保健品有点相似。

 

到底该如何合理来点保健品?还是请医生来个专业建议更安全。

 

原始出处:

[1] 央视新闻

[2] Geller AI, Shehab N, Weidle NJ, et al.Emergency Department Visits for Adverse Events Related to Dietary Supplements. N Engl J Med. 2015;373:1531-1540.


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    2016-08-24 kksonne
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    2016-08-04 忠诚向上

    适当饮食

    0

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    2016-08-03 zhaojie88
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    2016-08-02 深海的鱼

    得循证啊

    0

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Cell Metab:改善睡眠的保健品可能增加糖尿病患病风险

近日,来自瑞典隆德大学糖尿病中心的研究人员在国际学术期刊Cell Metabolism上发表了一项最新研究进展,他们发现胰岛细胞中褪黑素信号增强会降低胰岛素分泌,可能导致高血糖症并增加2型糖尿病患病风险。   目前2型糖尿病逐渐成为一种全球性公共健康问题,其流行趋势越来越严重。全基因组关联性分析已经发现了超过100个与糖尿病有关的变异基因,其中包括一个比较常见的变异基因--MTN