1961
"Calories Don't Count," by Herman Taller, sells 2 million copies; against carbs and refined sugar; Taller advocates large quantities of unsaturated fat. (In 1967 Taller is convicted of mail fraud for selling "worthless" safflower capsules.)
Chewing The Fat: Morsels From Dieting History. The Washington Post, Style Section, October 12, 1999