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蒋高明的博客

中国科学院植物研究所研究员,从事植物生态学研究

 
 
 

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联合国教科文组织人与生物圈中国国家委员会副秘书长、中国科学院植物研究所首席研究员、博士生导师、山东省人民政府泰山学者、中国科学院研究生院教授、联合国教科文组织人与生物圈计划城市组委员、中国生态学会副秘书长、中国生物多样性保护基金会副秘书长、中国环境文化促进会理事、中国植物学会植物生态学专业委员会委员、北京植物学会常务理事、青年工作委员会主任、中国生态系统研究网络生物分中心学术委员、中国科学院植物研究所学位委员会委员、

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蒋高明;美国医学和食品安全专家评论法国转基因老鼠实验  

2012-11-08 04:47:59|  分类: 环保呐喊 |  标签: |举报 |字号 订阅

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笔者转载了法国科学家针对实验老鼠进行的两年实验,发现食用转基因玉米的老鼠提前死亡并出现肿瘤等。针对我转载的文章以及我质疑针对植物病害进行的大量转基因作物研究,有学者提出了不同看法,比较代表的意见是关克玲先生的,他在笔者博文后留言到:

“美国是世界上转基因作物种植面积最大的国家,一共也只有不到100个品种。美国人民吃了17年转基因食品,没发现有什么危害”。(这个观点很流行,支持转基因商业化的学者大都如是说)

说美国美国就到了。今天早上我收到下面一篇文章,作者David Wallinga是美国医学与食品安全专家(http://www.iatp.org/about/staff/dr-david-wallinga),他的文章提到一下三个看点:

一是美国种植的转基因玉米做生物燃料和动物饲料,进入后续人类食品排最后;

二是转基因玉米对人类健康的影响,科学家没有权利做长期实验,转基因生物公司仅让做90天,这次法国科学家能够做两年,是冲破了一些阻力的。长期实验,才发现了转基因玉米的毒性,这与俄罗斯人所做仓鼠三代实验有异曲同工之处,后者发现了转基因食物对动物更大的危害。

三是很多中国人认为美国人吃不吃转基因是不在乎的,但本文披露的事实是,目前美国民意现实,90%以上的美国消费者要求转基因食品要标注,即对转基因食品不信任了。

因时间关系,我来不及翻译,请大家自己阅读吧。

New safety concerns raised by GMO corn study

Posted September 20, 2012 by Dr. David Wallinga

 

Food and HealthAgricultureAgribusinessGMO

 

美国医学和食品安全专家评论法国转基因老鼠实验 - 蒋高明 - 蒋高明的博客美国医学和食品安全专家评论法国转基因老鼠实验 - 蒋高明 - 蒋高明的博客美国医学和食品安全专家评论法国转基因老鼠实验 - 蒋高明 - 蒋高明的博客 
美国医学和食品安全专家评论法国转基因老鼠实验 - 蒋高明 - 蒋高明的博客

Mammals fed a diet of genetically engineered (GE) Roundup Ready corn for two years died earlier and developed more tumors and liver and kidney damage, according to a new study published this week in the peer-reviewed journal, Food and Chemical Toxicology.

The findings reinforce recent calls by the American Medical Association that GE crops be safety tested for possible health impacts before they enter the marketplace. No such premarket testing is currently required in the United States.

Corn genetically engineered to be pesticide-tolerant or insect-resistant makes up 88 percent of the U.S. corn crop. Monsanto’s Roundup Ready varieties make up the vast majority—an estimated 70 percent of the U.S. corn crop; it is widely planted in Brazil as well.

This GE corn, which allows farmers to spray the herbicide, Roundup, on fields without damaging the corn, largely ends up in ethanol plants, animal feed and processed human foods. But just last fall, Monsanto introduced for the first time aRoundup Ready sweetcorn, bringing GE technology directly to consumers’ mouths.

U.S. regulations also do not require the labeling of GE foods—despite consistent polls showing over 90 percent of consumers favor labeling. More than a decade ago the American Public Health Association, the world’s largest, called for GE foods to be so labeled. (The AMA falls short of supporting labeling, although the recent science may cause it to reexamine the position). The absence of GE labeling means that not only consumers are left in the dark, but so are their healthcare providers.

If physicians or researchers wanted to track whether a patient with breast cancer or liver damage had been consuming a diet high in GE corn, it would be nearly impossible to do so.

In the study published today, researchers fed laboratory rats a diet of GE roundup-ready corn (NK603) for two years. Half the males and 70 percent of the females fed the GE corn, the researchers found, died prematurely. Only 30 percent and 20 percent of males and females in the control group did so. Animals on the GE diet suffered mammary (breast) tumors, and severe damage to the kidney and liver.

A significant aspect of this study is its length. Most previous rat feeding studies for GE crops have been limited to 90 days—which in human terms would equate only to early adulthood. Because today’s study went for two years, it captures the possible impacts of eating such a diet over the entire course of the animal’s (or presumably a person’s) life.

Why so few long-term studies on the health effects of GE crops to date? Partly because scientists must seek permission from the patent holder, in this case Monsanto, before the research can take place. We agree with the editors at Scientific American that this ridiculous barrier to independent research needs to end.

The French government has asked its National Agency for Health Safety to investigate the study’s findings and consider protective steps to protect public health. This precautionary approach makes sense.

This study is yet another reminder of how little research on the long-term effects of the near ubiquitous consumption of GE foods has taken place.

When it comes to GE crops we’ve, for too long, taken a “ready, shoot, aim” approach to regulation. The public deserves better.

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