Evolving Health : The Origins of Illness and How the Modern World Is Making Us Sick

Human illnesses can be understood as damage to those adaptations that we took on at various stages in our evolution from pre-life molecules to modern Homo sapiens. Preventing these illnesses entails avoiding what causes the damage — which too frequently are the everyday hazards of twenty-first-century life, as the chart below shows: Level of Evolution / Cause of adaptive failure / resulting disease or problem Pre-life / Environmental poisons / Certain birth defects Single cell (bacteria and amoeba-like) / Viral infection / Colds/flu/HIV Morula (sponge-like) / Cellular stress / Cancer Chordate / Physical stress / Back pain Fish / Excess dietary salt / Hypertension/heart disease Amphibian / Tobacco smoke / Lung cancer/emphysema Lower primate / Excess dietary sugar / Diabetes mellitus Higher primate / Vitamin C deficiency / Scurvy Ape / Excess dietary protein / Gout Homo sapiens / Reduced dietary variety / Nutritionaldiseases/food allergies