Dr Morley Roberts thinks cancer is a disease of civilization.
Malignancy and Evolution
Page 67: “In 1926 Dr. Morley Roberts published in London a treatise on Malignancy and Evolution [this includes] ‘... I take the view commonly held that, whatever its origin, cancer is very largely a disease of civilization ...’”
On the same page Hoffman quotes himself as having published among others, these conclusions: “Cancer is unquestionably very rare in native races not in contact with the customs and habits of civilized populations ...” On page 666, summarizing the preceding pages of Cancer and Diet, Hoffman says that “far reaching changes are called for in the normal dietary habits of the American population as a means of preventing the increasing loss of life due to cancer ...”