How this diet works:  Forget portion sizes. Instead, focus on the right food choices. Eat more fish, particularly salmon and fish rich in omega-3 fatty acids. 

Good Points  Enjoy lean meats. Nibble on nuts. And dine on the “Mediterranean fats,” the ones rich in the monounsaturated fats that don’t clog arteries. Fruits, vegetables, and grains are limited since they are high in carbs. Special supplements are recommended to boost levels of nutrients such as chromium, carnitine and essential fatty acids.  

Bad Points   The book briefly mentions exercise a few times but offers no actual plan. Dieters are told to set a small exercise goal each week.  Difficult for vegetarians because this is another low-carb plan, vegetarians are going to have a tough time of it in the early phase  It’s a low-carb diet, but it’s also very low in calories, which makes it difficult for diners to find the right foods.  Pricey. There’s the cost of supplements (if you opt for them), plus macadamia nut oil and a grocery cart full of high-protein foods, none of which are cheap.

Duration: Open-ended. Predicted weight loss is 3 to 4 pounds per week for men and 2 to 4 pounds per week for women