甲醛对人体的致癌作用。甲醛也是一种较强的致突变、致癌物质，是引起肿瘤死亡的危险因素之一，动物实验多种证明甲醛既是致癌剂又是促癌剂。更多的报道显示暴露甲醛中的人群肿瘤死亡率显著高于非暴露的人群。
Carcinogenic effect of formaldehyde on human body. Formaldehyde is also a strong mutagenic and carcinogenic substance, which is one of the risk factors of cancer death. Animal experiments have proved that formaldehyde is both carcinogen and carcinogen. More reports show that the cancer mortality rate of formaldehyde exposed population is significantly higher than that of non exposed population.