官方APP下载:英语学习播客(支持苹果手机、安卓手机)
创办于2003年
UNSV记不住?那就记中文谐音“忧安思危”吧!
  Slow and Steady Wins the Race!
UNSV英语学习频道 - Slow and steady wins the race!
公众微信服务号(英语全能特训)
英语全能特训(微信公众服务号)
UNSV英语学习频道淘宝网店
客服短信:18913948480
客服邮箱:web@unsv.com
初级VIP会员
全站英语学习资料下载。
¥98元/12个月

HEALTH REPORT - Gut Bacteria: We Are What We Eat

作者:Art Chimes 发布日期:9-7-2011

Scientists are exploring the link between what kinds of bacteria live in our gut and what kinds of food we eat
Scientists are exploring the link between what kinds of bacteria live in our gut and what kinds of food we eat

This is the VOA Special English Health Report.

The human digestive system is full of bacteria -- mostly good bacteria. These organisms help break down food so the body can use the nutrients. Scientists are exploring the link between what kinds of bacteria live in our gut and what kinds of food we eat.

Gary Wu from the University of Pennsylvania and other scientists did two studies. Mr. Wu says the studies looked for connections between the food that people ate and the kind of microbes living in their intestines.

GARY WU: "We collected stool samples to look at the types of bacteria in the gut of people who provided us information about what they ate."

He says people with one kind of diet had very different bacteria than people who ate a different diet.

GARY WU: "So, we found essentially that there are two major categories in which individuals could be classified by the bacteria in their gut: one associated with sort of a western-type diet, and another one associated with a more agrarian or fruit-vegetable type of diet."

In the second study, ten volunteers took part in a so-called controlled feeding experiment. They had to change their normal diet. Yet their digestive bacteria remained much the same. This suggests that the mix of bacteria is based on long-term dietary patterns, not what people ate in recent days.

Gary Wu thinks testing people's mix of intestinal bacteria might be a better way to measure their disease risk than asking about their diet. He says intestinal bacteria might even play a part in the development of disease. If so, this could lead scientists to new ways to help prevent diseases.

GARY WU: "It means that if you could switch the types of bacteria in your gut, perhaps you could influence the development of certain types of diseases -- perhaps the types of diseases associated with western or more industrialized nations. That's a little bit more speculative, but that's something that is certainly very much of interest in the field."

The two studies are in the journal Science. The research may add to understanding of how diet affects health.

Another recent study involving diet warned that obesity is increasing worldwide, but especially in the United States and Britain. The findings appeared in the Lancet medical journal.

Worldwide, experts say one and a half billion adults are overweight. Another half-billion are obese. At current rates, about half of all American adults could be obese by twenty-thirty. In Britain, obesity rates could reach forty-eight percent for men and forty-three percent for women.

Experts say the rise in obesity is likely to lead to an increase in cases of diabetes, heart disease, cancer and other conditions.

Obesity is also on the rise among children.

And that's the VOA Special English Health Report. I'm Steve Ember.

网友的学习评论(2条):
作者:Candice
9-14-2011 22:15:27
It is really an interesting way to test the types of intestinal becteria to see the types of diet. But it could not be very specific used for measuring disease risk. Besides, obesity do be increasing worldwide and related with diabetes. I saw many Type 2 diabetes in their early 10s or 20s. What will they like ten years later? Be blindness or have already been in the period of uremia? Infact, modest food intake and exercise are the very point.
作者:snowwolfljb
1-3-2012 20:3:13
i think alcohol is also a factor for obesity, especially in china.
版权所有©2003-2019 南京通享科技有限公司,保留所有权利。未经书面许可,严禁转载本站内容,违者追究法律责任。 互联网经营ICP证:苏B2-20120186
网站备案:苏公网安备 32010202011039号苏ICP备05000269号-1中国工业和信息化部网站备案查询
广播台