Nobel prize winning physician and theologian Albert Schweitzer worked at the missionary hospital he founded for more than 40 years
before he saw his first case of appendicitis among the African natives. Cancer was completely unknown when he first reached the interior lowlands of West Africa in 1913.
“On my arrival in Gabon, I was astonished to encounter no cases of cancer,” Schweitzer noted. “I can not, of course, say positively that there was no cancer at all, but, like other frontier doctors, I can only say that if any cases existed they must have been quite rare.”