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Allergies Linked To Lower Risk Of Brain Cancer

Date:
October 10, 2007
Source:
Journal of the National Cancer Institute
Summary:
People with a history of allergies and related diseases have nearly a third lower risk of developing a certain brain cancer than those without the condition. Atopic diseases, which include asthma, eczema, hay fever, and other allergies, have been linked to a lower risk of glioma, a type of brain cancer that affects glial cells. This association has not been seen with meningioma, a tumor that develops in the membrane that covers the brain.

People with a history of allergies and related diseases have nearly a third lower risk of developing a certain brain cancer than those without the condition.

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Atopic diseases, which include asthma, eczema, hay fever, and other allergies, have been linked to a lower risk of glioma, a type of brain cancer that affects glial cells. This association has not been seen with meningioma, a tumor that develops in the membrane that covers the brain.

Eleni Linos of the Harvard School of Public Health in Boston and colleagues analyzed eight studies conducted between 1979 and 2007 that examined the association between a history of atopic diseases and a diagnosis of glioma or meningioma.

The researchers found that patients with a history of allergies had a 40 percent lower relative risk of glioma than those without allergies, and patients with a history of eczema or asthma had a 30 percent lower risk. They found no such association with meningioma.

While there is no evidence that the association is causal, "These results are consistent across many geographic settings, study designs, and different atopic diseases and may reflect a protective effect of the immunologic milieu associated with atopic allergy on tumor growth," the authors write.

This research was published October 9 in the Journal of the National Cancer Institute.


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The above story is based on materials provided by Journal of the National Cancer Institute. Note: Materials may be edited for content and length.


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Journal of the National Cancer Institute. "Allergies Linked To Lower Risk Of Brain Cancer." ScienceDaily. ScienceDaily, 10 October 2007. <www.sciencedaily.com/releases/2007/10/071010082414.htm>.
Journal of the National Cancer Institute. (2007, October 10). Allergies Linked To Lower Risk Of Brain Cancer. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2007/10/071010082414.htm
Journal of the National Cancer Institute. "Allergies Linked To Lower Risk Of Brain Cancer." ScienceDaily. www.sciencedaily.com/releases/2007/10/071010082414.htm (accessed November 28, 2014).

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