这些专家学者所检视的大多都是观察型研究,所以不能证明肥胖与这些癌症有因果关系,不过他们认为其间的相关性若没有其他意外、偏差或混淆因素的话,证据已经足够。
And most compared any increases in risk to that of an adult of normal weight having a body mass index of 18.5 to 24.9.
而大部分癌症风险增加的情形,都是与体重正常、身体质量指数(body mass index, BMI)介于18.5与24.9之间的成人比较出来的结果。
For some cancers, the group found that the fatter the person, the greater the risk. In endometrial cancer, for example, compared with a woman of normal weight, one with a B.M.I. of 25 to 25.9 was at a 50 percent higher relative risk.
该研究团队发现,人越胖,罹患某些癌症的风险就越高。拿子宫内膜癌来当例子,与体重正常的女性相较,一个BMI指数介于25与25.9之间的女性罹患此种癌症的相对风险提高了50%。
But her risk more than doubled at B.M.I.s between 30 and 34.9 and more than quadrupled at B.M.I.s of 35 to 39.9. A woman with a B.M.I. of 40 or more was at seven times the risk for endometrial cancer as a woman of normal weight.
当她的BMI指数达30到34.9之间,罹病风险达两倍;BMI指数介于35到39.9之间,风险则是4倍。一位BMI指数达到或超过40的女性,罹患此症的风险是体重正常女性的7倍。
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