“Cancer is a genetic disease. Its primary cause is mutagens in the environment, abetted by time and bad luck. A cell is controlled by the chromosomes in its nucleus, and when just the wrong combination of mutations happens to occur, a cell can begin to grow and multiply uncontrollably. The next crucial step occurs when the cell acquires the ability to travel through the bloodstream and implant somewhere else. The whole pathway from errant cell to malignant cell proceeds via chance mutations. From inception to metastasis, cancer is driven by genetics.”
This theory of cancer is more than 100 years old,
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