Second, we’ll show you why eating unhealthy fats and low-fat products can sabotage your health and weight-loss goals. And finally, we’ll explain the facts about your need for vital nutrients that you may not be getting if you’re only consuming the USDA Recommended Daily Allowances (RDAs) of vitamins and minerals.Why You Need the Right Kinds of FatIn all three of the Eat Fat, Lose Fat programs, you will be consuming not only coconut oil, but also cod-liver oil supplements (which work in combination with coconut), as well as other healthy traditional fats such as butter, egg yolks, meat fats, and even lard. These fats provide key nutrients you need to maintain both optimal health and your desired weight.Fats and Your BrainSixty percent of the brain is composed of fat. Phospholipids (which contain about 50 percent saturated fats) help make up the brain cell membranes. They contain two fatty acids and one proteinlike component. Generally, the phospholipids in the cell membranes contain one saturated fatty acid and one unsaturated fatty acid.