Comprehensive description of the role of essential fats in health and disease for people who want to live long and healthy lives, patients, professionals, and news media. The author discovered why low-fat diets can be harmful, and invented a test to diagnose deficiencies and imbalances of essential fats. Based on original research by the author published in leading peer-reviewed scientific journals, presented at scientific meetings, and cited by international news media such as CNN, Time, The New York Times, etc. Reveals how to use the essential fats w3 (like fish, flax oils) and w6 (like soybean, evening primrose, borage oils) to improve your health, prevent cardiovascular disease, improve your IQ, get a healthier, trimmer body, and have younger looking skin. Discusses guidelines on fat, cholesterol, cancer, and diabetes. Advises on lowering blood pressure, cholesterol, triglycerides and dangerous blood levels of trans fatty acids. New treatments for heart disease, diabetes, Crohn's, cystic fibrosis, hypertension, Alzheimer's, and many more. The amazing Boston egg white diet to lose fat (weight). The smart guide to blood (laboratory) tests.