Skin Allergies may protect Various Cancers
A new research suggested that people who have rashes when their Skin is in contact with some metals or chemicals, they have less risk for certain Cancers.The researchers say that the findings support the fact the allergies enhance the immune system to kill the Cancer cells before they damage it. This theory is known as the Immunosurveillance Hypothesis.
Contact Allergies and Cancer:
Contact allergies are reactions to the metals like Nickel, Cobalt or other chemicals that are found in plants as Poison Ivy and Poison Oak, perfumes and Hair dyes.Previous research says that people suffering from different types of allergies may have lower risk of different Cancers, but a new study specifically considers the Contact Skin Allergies.
Associate researcher Kaare Engkilde, PhD, of Denmark National Allergy Research Center, tells that the results do not prove that Contact Allergies have a direct effect on Cancer risk.
These allergies are not given much attention in research but it seems that these allergies have general effect than we previously thought.Engkilde followed 17,000 adults in the country to test for contact Skin allergies between 1984 and 2008.About 1 in 35% people have positive reactions to at least 1 Allergen. Women have more chances of Contact Allergy than men, having 41% of positive reactions as compare to men.
Allergic People had Fewer Breast and Skin Cancers:
In National Cancer Registry, the researchers determined the 15 different malignancies in participants.When the researchers compared the allergy and Cancer data, they found that people with Contact Skin Allergies have fewer rates of Breast Cancer and Non-Melanoma Skin Cancers.Women suffering from contact Skin Allergies have lower rates of Brain Cancer; this was not seen in men.
Engkilde says that people suffering from Contact Skin Allergies had higher rates of Bladder Cancer, which could have a link between Hair dyes and the Cancer. This is a general estimation but the higher levels of Chemicals accumulate in Blood and can cause Bladder Cancer.The Contact Skin Allergies triggers the production of Natural Killer T Cells unlike other allergies including Pollen and Dust allergy.NKT cells target and kill the Nascent Cancer Cells but more research is required to prove the connection between them.
William Chambers, PhD, of the American Cancer Society says that an activated Immune System can protect against Cancer, this connection was found 100 years ago.
Now there is a wide acceptance among immunologists that Cell immunity plays a vital role in different Cancers.Better understanding of the association can help in the prevention and treatment of this disease.