The Obesity Code is about a different approach to losing weight, not through cutting fat or calories, but through controlling our hormone insulin. Dr. Fung recommends a low-carb healthy-fat diet filled with whole unprocessed foods, as well as intermittent fasting.
The Plant Paradox says lectins are bad. Lectins are proteins hidden in some plants like grains, beans and tomatoes. Dr. Gundry claims they cause many health problems rampant today (like obesity, diabetes and autoimmune diseases) and if you avoid lectin-producing plants, you will lose weight, live longer and feel better.