The Atkins Diet is a high protein, high fat, low in carbohydrate diet. Created by Dr. Robert Atkins, who died in 2003, the diet is described in a series of books (see below). The Atkins' diet became increasingly popular following the publication of Dr. Atkins' New Diet Revolution. Rene Zellweger and Geri Halliwell are two known advocates of the diet, but doctors are concerned about the long term effects. As yet no one fully knows the long-term effects of low-carbohydrate diets. Debate about it's relative merits continue today, but with all diets it's advised you discuss undertaking them first with your GP.