Diet and Health with Keys to calories

Lulu Hunt Peters (1873-1930) was an American doctor and author who wrote a featured newspaper column entitled Diet and Health, which she followed up with a best-selling book, Diet & Health: With Key to the Calories. She was the first person to widely popularize the concept of counting calories as a method of weight loss. 1] 2] It was also the first weight-loss book to become a bestseller.