Transcript: The Atkins Diet was originally created in the 1970s by Dr. Robert Atkins. The diet, which has experienced a re-birth since the mid-90s, is based on the idea that the body's first source of energy is carbohydrates. Therefore, reasons Atkins, if you limit carbs, you can eat all the fat products you wish, and- because you've cut out carbohydrates-the body will burn that fat instead.  Atkins recommends eating unlimited fats, like cheeses and meats, but very small quantities of carbohydrates, including those old diet staples: fruits and veggies. When the Atkins diet was at its height, gorgeous celebrities like Jennifer Aniston, Calista Flockhart and Renee Zellwegger credited their successful weight loss to the low-carb craze. So will eating like a caveman work for you today? Try it and see!