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People With Allergies May Have Lower Risk of Brain Tumors, Ohio State University Study  
8/3/2012 11:19:23 AM

New research adds to the growing body of evidence suggesting that there’s a link between allergies and reduced risk of a serious type of cancer that starts in the brain. This study suggests the reduced risk is stronger among women than men, although men with certain allergy profiles also have a lower tumor risk. The study also strengthens scientists’ belief that something about having allergies or a related factor lowers the risk for this cancer. Because these tumors, called glioma, have the potential to suppress the immune system to allow them to grow, researchers have never been sure whether allergies reduce cancer risk or if, before diagnosis, these tumors interfere with the hypersensitive immune response to allergens.