避孕药或有助于预防某些癌症_BEC初级作文

避孕药或有助于预防某些癌症

除了发现服用避孕药的女性有较低的患子宫内膜癌和卵巢癌的风险，研究还发现：口服避孕药的时间越长，患这两种癌症的风险越低。相比那些从没口服过避孕药或口服不足一年的女性，那些服药10年及以上者，她们患卵巢癌的风险要低40%，患子宫内膜癌的风险要低34%。

That confirms what earlier studies found, but the current study also delved deeper into how oral contraceptives and cancer risk differed among women with different risk factors for cancer. When the scientists looked at lifestyle factors that might affect the cancer risk among pill users, for example, they found that women who used the pill and were obese, smoked or did not exercise had among the lowest ovarian cancer rates. It's not clear why, but the researchers speculate that in the case of smokers, there may be some interaction among the hormones associated with oral contraceptives and tobacco.

这证明了早期的研究发现，但目前的研究更加深入，探讨了口服避孕药和癌症风险因人而异，因为不同女性患癌的风险因素也不尽相同。当科学家研究生活方式因素时，这一因素可能会影响服药者的癌症风险，比如，他们发现：服用药物、肥胖、抽烟或不运动的女性患卵巢癌的风险最低。目前原因尚不清楚，但研究人员推测，就吸烟者而言，口服避孕药激素和烟草激素可能会产生一些反应。

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