Allergy, asthma, and the risk of breast and prostate cancer: a Mendelian randomization study

The relationship of allergic diseases, such as asthma, hay fever, and eczema, with cancer is under debate. Observational studies have reported conflicting findings, but such studies are susceptible to confounding and reverse causation. Understanding the potential role of allergy in carcinogenesis may shed new light on the biological mechanisms underpinning intrinsic immunity and cancer.We conducted a Mendelian randomization study, using germline...