Cancer and the Environment
Cancer is a disease with many risk factors; those factors can affect the illness in ways that are not fully understood. Most cancers take a long time to develop. Studies have shown that depending on the type of cancer, some cancers may take as long as 40 years to develop after exposure to some substances.
Through surveillance and tracking, scientists have observed a relationship between some cancers and the presence of certain environmental pollutants. This relationship does not rule out other causes but does suggest that there are factors in the environment that may increase the risk for some cancers.
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