The allergy or cancer can not

Allergy skin irritating, but it is good news, the scientists said. Bad itching can help prevent cancer.

The Danish scientists found that those who susceptible to conventional agents such as perfume, nickel ... 3, the risk of cancers less than.

This may be due to an allergic reaction contact (when the body mistakenly that it is under attack) also help the immune system fight off these threats.

They found that only 1 / 3 of them, about 6,000 people test positive for at least one cause of allergies. They then compared these results with data from the Danish Cancer Agency.

The team found that in the group who are allergic exposure, the incidence of breast cancer, skin cancer, pigmentation is not significantly lower in both sexes. Particularly in women, the incidence of brain cancer is also lower.

The previous study also found that those who are allergic to pollen and house dust may be resistant to these diseases.

This finding also supports "immune surveillance theory," in which people are allergic to a low risk of cancer, immune system activity so effective, the study authors said.

"There are probably several mechanisms of protection and therefore, the immune system seems able to resist many things, including cancer."

The survey also noted the group who are allergic to contact with the incidence of bladder cancer is higher, may be the result of the accumulation of metabolites in the blood, the authors argue.

However, the need for further research into account other factors such as social class, smoking.