The type of fat with no redeeming nutritional value is trans fat, which is created when food manufacturers artificially convert unsaturated fatty acids into solid, saturated fats. Trans fats have the worst effect on your cholesterol levels, because they actually lower the good HDL cholesterol and increase the harmful LDL cholesterol. They're also highly inflammatory, which may contribute to chronic diseases, and they contribute to insulin resistance, which drives diabetes development.
Out of all lean meats, duck has the highest level of a muscle-building form of polyunsaturated fat called arachidonic acid, or AA. Supplementation of arachidonic acid has been shown to increase lean body mass, strength and anaerobic power in men. In a study at the University of Tampa, men who took AA gained 3.4 pounds more lean muscle mass than those who took a placebo. Keep bumping up the burn with these best foods for a toned body.
Fat, fat, fat! Would all of our weight loss problems be solved if we just eliminated fat from our diets? Unfortunately, it's not that simple. We actually need fats -- can't live without them, in fact. Fats are an important part of a healthy diet: They provide essential fatty acids, keep our skin soft, deliver fat-soluble vitamins, and are a great source of energizing fuel. But it's easy to get confused about good fats vs. bad fats, how much fat we should eat, how to avoid artery-clogging trans fats, and the role omega-3 fatty acids play in heart health.