The fact that the reduction in cancer risk was found only after several years of aspirin use suggests an effect of aspirin on the early stages of colorectal adenoma or cancer, the researchers wrote.

• 研究者写道，事实上,服用阿斯匹灵减少癌症的风险数年之后才会被发现，且显示阿斯匹林对早期大肠腺瘤或癌有效。