Professors Michael Zimmerman and Rosalie David in England have an intriguing suggestion in their recent study of mummies: cancer may be a largely man-made disease. The study found no evidence of the disease in ancient corpses — leading to the theory that cancer may be the result of diet, pollution, and other man-made causes such as early use of snuff.
The researchers examined tissue from hundreds of Egyptian mummies and found only one case with cancer traces. Likewise, an earlier study of thousands of Neanderthal bones produced only one sample with possible cancer traces.
Source: Daily Mail