Known Causes Of Cancer

Known causes of cancer account for only a small fraction of the total number of cases. Most cancers are regarded as occuring spontaneously. In addition only a minority of the people exposed to the known hazards actually develop cancer. There must be another factor which can be classed as individual susceptibility.

Intense heat can cause cancer Natives of Kashmir tend sheep at night and to keep warm suspend baskets of hot charcoal beneath their robes. They are the only people in the world who develop cancer of the skin of the abdomen.

Chronic irritation can cause cancer. Gall stones if left untreated may in time cause a malignancy.

Chemical compounds may cause cancer. It is known that arsenic, tar, creosote oil, crude paraffin oil cause cancer of the skin.

Asbestos, chromatic compounds, tar fumes cause cancer of the lung.