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The first cause of cancer was identified by British surgeon Percivall Pott, who discovered in 1775 that cancer of the scrotum was a common disease among chimney sweeps. [ citation needed ] The work of other individual physicians led to various insights, but when physicians started working together they could draw firmer conclusions.
Cancer related to one's occupation is believed to represent between 2–20% of all cases. [17] Most cancer deaths caused by occupational risk factors occur in the developed world. [16] Job stress does not appear to be a significant factor at least in lung, colorectal, breast and prostate cancers. [18]
The most common as of 2018 are lung cancer (1.76 million deaths), colorectal cancer (860,000) stomach cancer (780,000), liver cancer (780,000), and breast cancer (620,000). [2] This makes invasive cancer the leading cause of death in the developed world and the second leading in the developing world . [ 24 ]
In many developing countries cancer incidence, insofar as this can be measured, appears much lower, most likely because of the higher death rates due to infectious disease or injury. With the increased control over malaria and tuberculosis in some Third World countries, incidence of cancer is expected to rise.
In the following interview, Dr. Margaret I. Cuomo, author of the book A World Without Cancer, discusses the importance of cancer prevention with Motley Fool health care analyst Max Macaluso.
The following is a list of cancer types. Cancer is a group of diseases that involve abnormal increases in the number of cells , with the potential to invade or spread to other parts of the body. [ 1 ]
Hepatocellular carcinoma (liver cancer) is rare in the West but is the main cancer in China and neighbouring countries, most likely due to the endemic presence of hepatitis B and aflatoxin in that population. Similarly, with tobacco smoking becoming more common in various Third World countries, lung cancer incidence has increased in a parallel ...
While men generally report a 25% higher incidence of cancer than women globally, India bucks this trend with more women getting diagnosed with cancer, according to a study published in the Lancet ...
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