Allergies May Protect Against Some Cancers, Denmark's National Allergy Research Center Researchers Find

Contact allergies (reactions caused by direct contact with substances like common metals and chemicals) may help prime the immune system to ward off certain types of cancer, suggests research published in the online journal BMJ Open. Previous research has indicated that people with type 1 allergies, which include pollen and house dust mites, may be more or less likely to develop cancer. But it is not known if those with contact allergies to common metals such as nickel, and chemicals, might also be afforded protection against the disease.