The Causes and Development of Cancer
The ongoing, unchecked multiplication of cancer cells is the basic defect that leads to the development of cancer. Cancer cells proliferate and divide uncontrollably, infecting healthy tissues and organs, and eventually spreading throughout the body. They do this instead of adequately reacting to the signals that regulate normal cell behavior. As a result of accumulating aberrations in numerous cell regulatory systems, cancer cells demonstrate a broad loss of growth control that is reflected in a number of behaviors that set them apart from normal cells.