the fish oil that keeps Eskimos healthy is good for everyone, . The crux of this theory is that various blood chemistry variables have ideal ranges and that paying attention to what influences these ranges, especially sugar and refined carbohydrates, can have a huge influence on how we age. Mood, thinking, memory, attention capacity, and a variety of disease-fighting mechanisms all improve dramatically when one's blood chemistry stays in "The Zone" through the use of supplements and dietary recommend-ations spelled out so clearly here.