Where Your Dreams Become Reality
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Subject: RE: What is the healthiest diet you could possibly eat? (as a general consensus)
Robert Lustig, of course, says that saturated fat has a neutral effect on bad blood lipids and that the byproducts of fructose metabolism have the most negative effect. But he isn't a scientist, I don't suppose.
Now, I know he overstates his case a bit (fructose in moderate servings is perfectly manageable by the body) but his larger point is sound - we get far more calories than we need from sugar and it is the fructose part that is the culprit, both in how it is metabolized in the liver and its neutral effect on satiety.
I have still heard no sound defense of why even a 80 mpw runner needs to get 1500+ calories from carbs a day. Why mess with your insulin response when most of those carbs will not become glycogen anyway? Your body can only store 2000 or so calories as glycogen, most in the muscles and some in the liver, and you can't take bicep glycogen storage and move it to the quads for running fuel. For all your running, the large majority of the fuel is fat. Especially good are medium-chain fatty acids, but runners avoid this because they think "fat makes you fat" and scarf bagels instead:
If you control for sugar intake (that is, people with low sugar intake by high fat intake) there seems to be much less relationship between even saturated fat and heart disease. Spurious correlations plague alot of epidemiological study. High fat diets also tend to be high sugar.
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