America's National Cancer Institute has said that people who smoke low-tar cigarettes do not reduce their risk of getting diseases linked to smoking.

VOA: special.2010.03.09

So tens or hundreds of millions of dollars would go into a study like this by the time it was completed, money that could have been used for other things, to test whether eating a low fat diet would reduce risk for breast cancer.

数以百万计的美元,投入到这样的研究,当研究结束时,本可以用来做其他事情的钱,被用来检测是否低脂膳食,可降低患乳腺癌风险

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But there is promising evidence of a way to reduce the risk of bleeding.

VOA: special.2009.10.20

Exercise helps to reduce the risk of some diseases.

VOA: special.2010.06.08

It says educating communities to better identify people at risk of suicide and encouraging those at risk to seek help can reduce suicides among people with mental illness.

VOA: standard.2009.09.10

It wants parents to reduce the risk of choking by first cutting hot dogs in half lengthwise, cutting grapes into quarters and reducing the size of other foods that can get stuck in children's throats.

VOA: standard.2010.02.23

"While our study shows that this might not be sufficient to maintain normal weight, it clearly is sufficient to reduce the risk of developing many chronic diseases, including heart disease, certain types of cancer, type two diabetes."

VOA: standard.2010.03.30