过敏很烦人,但一项新的研究表明,过敏其实可能有好处,存在接触性过敏反应的人其免疫系统或许能防范某些类型的癌症,其中包括乳腺癌和非黑色素瘤皮肤癌。科学家对将近1.7万名存在接触性过敏反应的丹麦成年人展开了研究。这些人会因为直接接触丙酮等化学品以及镍和钴等普通金属而发生过敏,接触过敏原的地方会在24小时之内出现皮疹。 Allergies are annoying, but a new study suggests that allergies may actually be beneficial. People with contact allergies may have immune systems that can protect against certain types of cancer, including breast cancer and non-melanoma skin cancer. Scientists conducted research on nearly 17,000 Danish adults who have been exposed to allergic reactions. These people are allergic to direct exposure to chemicals such as acetone and common metals such as nickel and cobalt, and skin rashes occur within 24 hours of exposure to allergens.