Friday

190208

Just as there are many remote causes of plague—heat, insects, rats—but only one common cause, the plague bacillus, there are a great many remote causes of cancer—tar, rays, arsenic, pressure, urethane—but there is only one common cause into which all other causes of cancer merge: the irreversible injuring of respiration.

Is Cancer a Genetic or Metabolic Disease? Part 4

Metastasis involves the spread of tumor cells from a primary site to distant sites with continued relentless growth. Metastasis is responsible for about 90 percent of cancer deaths and is the most fearsome aspect of cancer. The epithelial mesenchymal transition is currently the dominant explanation for the origin of cancer metastasis and is based on the somatic mutation theory of cancer. However, emerging evidence indicates that metastatic cancer cells arise following the fusion of cancer stem cells with macrophages.

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