www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

您現在的位置: Language Tips> Audio & Video> China Daily Media News  
   
 





 
Frequent blood donation lowers cancer risk: Study
[ 2008-04-10 10:59 ]

Download

Frequent blood donation is not harmful to your health, a new study confirms.

"No one should worry that giving blood causes cancer," Dr Gustaf Edgren of the Karolinska Institutet in Stockholm, the study's lead author, told Reuters Health. "If anything, blood donation may actually be good for you."

People who donate blood show lower cancer and mortality rates than their non-donating peers, Edgren and his colleagues note in their report, published in the Journal of the National Cancer Association, but the fact that blood donors tend to be healthier overall could mask any ill effects of frequent donation.

There are also several mechanisms by which frequent blood donation could theoretically affect health, Edgren noted in an interview. For one, drawing blood causes the body to ramp up production of blood cells in the bone marrow. This accelerated cell division, or "mitotic stress," could increase the likelihood of malignancy in blood-forming tissues.

Giving blood has also been shown to result in immune system changes, and some have suggested these immunologic effects could be associated with cancer.

On the positive side, excess iron stores have been tied to heart disease and certain types of cancer, so people who have their blood drawn regularly may be depleting these stores and thus improving their health.

To better understand how repeated blood donations affect health, Edgren and his team looked at data from Swedish and Danish blood banks and transfusion clinics containing records of individuals who donated blood at least once between 1968 and 2002, a total of 1,110,212 people.

The investigators found no relationship between how frequently a person gave blood and their risk of cancer. However, among male donors, the risk of liver, lung, colon, stomach and throat cancer declined as the frequency of donations increased, which suggests that iron depletion may reduce cancer risk.

Even a small excess risk of cancer associated with blood donation would be "a very serious matter," Edgren noted, because so many people donate blood.

However, he added, "we've more or less made very clear that there is no excess risk of cancer associated with frequent blood donation."

Questions:

1. What does Dr Gustaf Edgren’s study show about the rates of cancer and mortality around people who donate blood?

2. How does frequent blood donation affect one’s health?

3. Does the frequency of blood donation affect one’s risk of cancer?

Answers:

1.The rates are lower than those who don’t donate blood.

2.It forces the body to ramp up the production of red blood cells in the bone marrow.

3.No.

(英語點津  Celene 編輯)

About the broadcaster:

Frequent blood donation lowers cancer risk: Study

Bernice Chan is a foreign expert at China Daily Website. Originally from Vancouver, Canada, Bernice has written for newspapers and magazines in Hong Kong and most recently worked as a broadcaster for the Canadian Broadcasting Corporation, producing current affairs shows and documentaries.

 

 
英語點津版權說明:凡注明來源為“英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
相關文章 Related Story
 
 
 
本頻道最新推薦
 
新加坡開展促友善全民教育活動
小長假的前一天 virtual Friday
英語中的“植物”喻人
Burying loved ones deadly expensive
經濟危機時期入讀哈佛難上加難
翻吧推薦
 
論壇熱貼
 
“學會做人”如何翻譯
做作怎么翻譯
美國人電話留言精選
大話西游中英文對白
夜宵怎么翻譯比較地道

 

主站蜘蛛池模板: 萌白酱香蕉白丝护士服喷浆 | 亚洲精品欧美日韩 | 午夜欧美在线 | 久久精品国产精品亚洲20 | 欧美成人性动漫在线观看 | 91精品国产综合久久久久久 | 国产精品亚洲一区二区在线观看 | 国产原创系列在线 | 成年女人毛片免费播放视频m | 欧美视频在线观看 | 久草国产在线播放 | 欧美性猛交xxxxbbb | 亚洲欧美精品成人久久91 | 欧美成人亚洲高清在线观看 | 制服丝袜怡红院 | 成人午夜精品久久不卡 | 久久青草免费免费91线频观看 | 国产一区二区三区精品视频 | 亚洲小视频在线播放 | 欧美大狠狠大臿蕉香蕉大视频 | 精品国产中文一级毛片在线看 | 久久久综合视频 | 国产一区二区三区在线观看精品 | 加勒比综合网 | 成人午夜视频免费观看 | 亚洲视频 欧美视频 | 久久福利网站 | 欧美三级香港三级日本三级 | 美女视频黄a视频免费全程 美女视频黄a视频免费全过程 | 日日摸天天摸狠狠摸视频 | 女人18毛片a级毛片 女人aaaaa片一级一毛片 | 国产在视频线精品视频二代 | 黄色美女免费 | 中文字幕波多野不卡一区 | 三级毛片在线 | 国内精品九一在线播放 | 精品一区二区三区视频在线观看免 | 亚洲精品高清国产麻豆专区 | 亚洲国产欧美自拍 | 国产精品18久久久久网站 | 国产精品毛片一区二区三区 |