It is customary to conceive of cancer as an invader against whom the body—like a country under foreign attack—must wage war. Such a view, while perhaps comforting in its simplicity, is a distortion of reality. First, even when there is an external carcinogen like tobacco, the cancer itself is partially an outcome of internal processes gone wrong. And, of course, for most cancers there is no such identified carcinogen. Second, it is the internal environment, locally and throughout the entire organism, that plays the major role in deciding whether the malignancy will flourish or be eliminated.
...more