Could Allergies Help Protect You From Cancer?

By , Category : Cancer

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It’s not often you hear good news about allergies, but this health e-letter is about to give you some. Allergies, as you probably know, can be debilitating for some people. Contact allergies can be particularly troublesome. These are the allergies that crop up when you come into contact with a specific substance like a chemical or a metal. But now researchers have some positive news about contact allergies: apparently people with this type of allergy may have immune systems that could protect against certain cancers.

In a new study, researchers looked at almost 17,000 Danish adults who were tested for contact allergies between 1984 and 2008. About one-third (or 35%) tested positive for at least one contact allergy. After looking at the data, the research team determined that women were more likely than men to have a contact allergy — 41% versus 26%. Now here’s where the study gets really interesting. When the research team examined cancer cases among the participants over the long term, they found that men and women with contact allergies had significantly lower rates of breast and non-melanoma skin cancer. Not only that — but women with contact allergies also had lower rates of brain cancer compared to those without contact allergies.

On the downside, people with contact allergies did show higher rates of bladder cancer. The researchers explained this anomaly by suggesting that higher levels of chemical metabolites accumulated in the blood may have contributed to bladder cancer.

Unfortunately, the researchers could not comment on why the link between contact allergies and lower risk for some cancers exists. They hope to perform more research. They do know the link has something to do with the immune system. Perhaps finding the reason for the connection will lead to a better understanding of how the immune system, altered in just the right way, could prevent the growth of cancerous tumors.




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Dr. Victor Marchione, MD

About the Author, Browse Victor's Articles

Victor Marchione, MD received his Bachelor of Science Degree in 1973 and his Medical Degree from the University of Messina in 1981. He has been licensed and practicing medicine in New York and New Jersey for over 20 years. Dr. Marchione is a respected leader in the field of smoking cessation and pulmonary medicine. He has been featured on ABC News and World Report, CBS Evening News and the NBC Today Show and is the editor of the popular The... Read Full Bio »