It described the benefits of a meat diet for those suffering from diabetes, basing this recommendation on Matthew Dobson's discovery of glycosuria in diabetes mellitus.
The first popular diet was "Banting", named after the English undertaker William Banting.
Low-carbohydrate diets are sometimes ketogenic (i.e., they restrict carbohydrate intake sufficiently to cause ketosis).
Low-calorie diets usually produce an energy deficit of 500–1,000 calories per day, which can result in a 0.5 to 1 kilogram (1.1 to 2.2 pounds) weight loss per week.
A restricted diet is often used by those who are overweight or obese, sometimes in combination with physical exercise, to reduce body weight.
Some people follow a diet to gain weight (usually in the form of muscle).
Banting’s pamphlet was popular for years to come, and would be used as a model for modern diets.The first weight-loss book to promote calorie counting, and the first weight-loss book to become a bestseller, was the 1918 Diet and Health: With Key to the Calories by American physician and columnist Lulu Hunt Peters.Low-fat diets involve the reduction of the percentage of fat in one's diet.In 1863, he wrote a booklet called Letter on Corpulence, Addressed to the Public, which contained the particular plan for the diet he had successfully followed.His own diet was four meals per day, consisting of meat, greens, fruits, and dry wine.In 1724, he wrote An Essay of Health and Long Life, in which he advises exercise and fresh air and avoiding luxury foods.