Simply Good Foods provides nutritional bars (57% of sales), shakes (21%), treats (12%), and other nutritional products under the Atkins (57%), Quest (40%), and Simply Protein (3%) brands. The firm also licenses the Atkins brand to Bellisio Foods, which produces frozen meals. Atkins products are modeled after the philosophy of Dr. Robert Atkins, whose 1972 book, "Dr. Atkins' Diet Revolution," conferred the benefits of a high protein/low carbohydrate diet, and is credited with launching the low-carb diet trend. Quest, acquired in November 2019, also follows the high protein/low carbohydrate philosophy and targets active lifestyle consumers. Ninety-four percent of the firm's sales occur within North America.