Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Questionable Health Advice

Gives a good review of the low-carb, high-protein gurus. However, eating all the protein and fat you want and forcing the body into ketosis is questionable health advice. McCullough leans more toward a Dr. Atkins philosophy, than a Barry Sears (The Zone) balanced protein/carb low, but "good fat" approach. She clearly loves her fat and sweet, calling for "heavy cream" and "aspartame" (Nutrasweet) in many recipes. Nevermind that saturated fat has been shown to raise cholesterol levels (linked to America's #1 killer, heart disease) and Aspartame has been shown to cause cancer in rats (and feed melanoma tumors), you can now use them freely in your cooking if you take the author's advice. Weight-watchers are better off sticking to fruits and vegetables, eating low fat, eliminating sweets, and limiting portions of complex carbs. Perscription for Dietary Wellness by Balch, is a better read.