You are right. The Eskimos actually lived less than they do now when they ate their traditional diet.
And saturated fats are not the body's prefered energy source: glucose is. The brain can only use glucose as fuel. What are you talking about? Fat has to be transformed into monosaccharides before the body can use it as fuel. During a zero carbs diet, the body switches from glucose to ketones as it's energy source, but it is not the body's prefered fuel.
SUCKMYMUSCLE
N0 GLUC0SE IS N0T. I'VE STUDIED THIS SUBJECT INTENSIVELY F0R 2 YEARS AND HAD INTERVIEWES WITH PHD BI0CHEMISTS FR0M T0P SCH00LS WH0 HAVE PEER REVIEWED LITERATURE. 0NE GUY HAD T0 C0NVINCE 10 PHD'S IN HIS THESIS THAT FAT IS THE PRIMARCY S0URCE 0F FUEL F0R THE B0DY AND N0T GLUC0SE. THE B0DY BURNS WHAT Y0U FEED IT BUT IF GIVE THE CHANCE, CELLS WILL TAKE UP FAT 0VER GLUC0SE. ACTUALLY THE B0DY AND BRAIN L0VES KET0NES. IN 0RDER KET0NES, FATTY ACIDS, AND THEN GLUC0SE. 0NLY WHEN Y0U ARE FULLY FAT ADAPTED CAN THE B0DY USE KET0NES EFFICIENTLY. IT TAKES 2-6 M0NTHS AND N0 CARB L0ADING. Y0U'RE WR0NG AB0UT THE BRAIN. I'LL P0ST Y0U A LINK IN A MINUTE 0N THE W0RLD'S LEADING RESEARCHER 0N KET0NES. THE BRAIN PREFERS KET0NES.
http://www.nytimes.com/2002/07/07/magazine/what-if-it-s-all-been-a-big-fat-lie.html?pagewanted=18When I interviewed ketosis experts, however, they universally sided with Atkins, and suggested that maybe the medical community and the media confuse ketosis with ketoacidosis, a variant of ketosis that occurs in untreated diabetics and can be fatal. ''Doctors are scared of ketosis,'' says Richard Veech, an N.I.H. researcher who studied medicine at Harvard and then got his doctorate at Oxford University with the Nobel Laureate Hans Krebs. ''They're always worried about diabetic ketoacidosis. But ketosis is a normal physiologic state. I would argue it is the normal state of man. It's not normal to have McDonald's and a delicatessen around every corner. It's normal to starve.''
Simply put, ketosis is evolution's answer to the thrifty gene. We may have evolved to efficiently store fat for times of famine, says Veech, but we also evolved ketosis to efficiently live off that fat when necessary. Rather than being poison, which is how the press often refers to ketones, they make the body run more efficiently and provide a backup fuel source for the brain. Veech calls
ketones ''magic'' and has shown that both the heart and brain run 25 percent more efficiently on ketones than on blood sugar.N0B0DY KN0WS M0RE AB0UT KET0NES THAN THIS GUY. L00K HIM 0N G00GLE SCH0LAR 0R PUBMED.
