Could the diet of our ancestors prevent, treat, and reverse most cases of overweight, coronary heart disease (CHD), cancer, type 2 diabetes, metabolic syndrome, Alzheimer's disease, dementia, age-related macular degeneration (AMD), and autoimmune disease, including multiple sclerosis, rheumatoid arthritis, lupus, Crohn's disease, and ulcerative colitis, as well as most other chronic, degenerative diseases? And is this a diet plan that is simple, effective, and allows one to eat to their heart's content? The simple answers are yes, and yes! This book presents a vast body of published and original research that results in profound conclusions: Overweight, obesity, and most all chronic diseases can be prevented simply by the elimination of processed foods and vegetable oils from the diet. And while the science and evidence presented are immense, the tenets of the authors' advice are deceptively simple. We can prevent and reverse most chronic diseases by eliminating the major processed food components - including refined flour, sugars, and most vegetable oils. Simultaneously, excess weight drops effortlessly, and energy increases, while fatigue, brain fog, and a myriad of other mysterious symptoms generally disappear. The effects of aging are obviously delayed. Most people are shocked at their results, including the authors. And what is the single most important component of an ancestral diet? The answer is as simple as the elimination of vegetable oils - oils that are extremely high in omega-6 fats - which are highly pro-oxidative, pro-inflammatory, toxic, and nutrient deficient. Come witness for yourself... the evidence is beyond compelling... it even meets the Bradford Hill criteria of 'proof, ' as the authors have clearly demonstrated.