Antônio Drauzio Varella (Brazilian Portuguese: [ˈd̪ɾäwzjʊ väˈɾɛ̞lɐ]; born May 3, 1943 in São Paulo, Brazil) is a Brazilian doctor, educator, scientist and medical science popularizer in the press and TV, as well as best-selling author. In addition to medicine, Varella is a public commentator on issues such as prison conditions, social welfare, government, literature and his professed atheism and skepticism.