国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

Hot dogs may cause genetic mutations


Updated: 2006-08-16 15:22
Large Medium Small
Everyone knows hot dogs aren't exactly healthy for you, but in a new study chemists find they may contain DNA-mutating compounds that might boost one's risk for cancer.

Hot dogs may cause genetic mutationsScientists note there is an up to 240-fold variation in levels of these chemicals across different brands.

"One could try and find out what the difference in manufacturing techniques are between the brands, and if it's decided these things are a hazard, one could change the manufacturing methods," researcher Sidney Mirvish, a chemist at the University of Nebraska Medical Center in Omaha, told LiveScience.

Mirvish and his colleagues examined hot dogs because past research had linked them with colon cancer. Hot dogs are preserved with sodium nitrite, which can help form chemicals known as N-nitroso compounds, most of which cause cancer in lab animals.

Extracts from hot dogs bought from the supermarket, when mixed with nitrites, resulted in what appeared to be these DNA-mutating compounds. When added to Salmonella bacteria, hot dog extracts treated with nitrites doubled to quadrupled their normal DNA mutation levels. Triggering DNA mutations in the gut might boost the risk for colon cancer, the researchers explained.

"I won't say you shouldn't eat hot dogs," Mirvish said. Future research will feed hot dog meat to mice to see if they develop colon cancer or precancerous conditions, he explained.

James Hodges, president of the American Meat Institute Foundation in Washington, noted this study is "a preliminary report that the author concedes requires further investigation. The carcinogenic risk to humans of the compounds studied has not been determined."

The possible hazard presented here is not just limited to hot dogs. Salted dried fish and seasonings such as soy sauce may contain similar levels of these chemicals, Mirvish said.

Mirvish and his colleagues reported their findings in the Journal of Agricultural and Food Chemistry.

安顺市| 沐川县| 东方市| 房山区| 和平区| 康乐县| 泸州市| 金寨县| 容城县| 澄城县| 获嘉县| 平顺县| 江津市| 郎溪县| 台中县| 东兰县| 冕宁县| 建阳市| 肃南| 鹤山市| 郎溪县| 黑龙江省| 屏边| 高要市| 五河县| 改则县| 马鞍山市| 策勒县| 高邮市| 娄烦县| 兴安县| 宁蒗| 焦作市| 于田县| 九台市| 荥阳市| 元阳县| 鲜城| 江阴市| 织金县| 岗巴县|