A low-carb diet is a type of diet that limits the intake of carbohydrates, such as those found in grains, starchy vegetables, and fruits. The most popular low-carb diet is the Atkins Diet, which was created by Dr. Robert Atkins in the 1970s. The Atkins Diet focuses on eating high-protein, low-carb foods, such as meats, eggs, and non-starchy vegetables. It also encourages people to reduce their intake of processed foods and sugar.