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10
Adult Cancer and ExtremelyLow-Frequency
Magnetic Fields
Gabor Mezei and Ximena P. Vergara
Introduction
In industrialized societies such as the United States, about half of adult men and a third
of women develop cancer during their lifetime (Siegel etal. 2013). Cancer is typically char-
acterized as uncontrolled or unregulated proliferation of cells, with a tendency to invade
neighboring tissues and organs and to spread to more distant parts of the body through
metastasis. Cancer types are classied based on the organ and cell type from which they
originate, and by morphological characteristics of the cancer cells themselves. Cancer
type