Dr Greene says to avoid flour, cereal, root vegetables, sugar, but eat as much of meat, fish, green veggies, eggs, cheese, and low sugar fruit to treat obesity.
The Practice of Endocrinology - A Diet for Obesity
Foods to be avoided: 1. Bread, and everything else made with flour... 2. Cereals, including breakfast cereals and milk puddings 3. Potatoes and all other white root vegetables 4. Foods containing much sugar 5. All Sweets... You can eat as much as you like of the following foods: 1. Meat, fish, birds 2. All green vegetables 3. Eggs, dried or fresh 4. Cheese 5. Fruit...except bananas and grapes