Fri, Jan-23-04, 17:12
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Registered Member
Posts: 2,889
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Plan: Atkins
Stats: 280/203/200
BF:
Progress: 96%
Location: Dallas, TX, USA
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Quote:
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"People shed weight on this apparently limitless calorie diet. If calories aren’t lost through ketosis or breaking down food what is happening to them?"
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The Donnelly study, as it was reported here, apparently ignored two possible caloric leaks: first, although they measured the ketones in the urine, they don't appear to have measured the amount of ketones in the breath or sweat of the twins. Second, they didn't study the calories remaining in the feces of the twins.
Quote:
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Dr SUSAN JEBB: We used things like spaghetti bolognaise or mousses so that you could because easily disguise the fat content of the food....<snip>...What we conclude from that is that fat doesn’t make people feel full. It doesn’t trigger the sense of fullness and satiety that we believe is fundamental to appetite control.
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No, what she proved was that high fat IN A HIGH CARB MEAL doesn't make people NOT IN KETOSIS feel full. She blew the study because she didn't study fat in isolation, and didn't account for the metabolic changes of ketosis at all.
Could the carbs have interfered with the hypothetical "fat-fullness switch"? Consider the effect of carbs on alcohol: we have plenty of anecdotal evidence that it is easier to get drunk when drinking on the Atkins diet than when drinking on a high-carb diet. I've experienced this effect myself. It could be that high carbs "block" the alcohol, or it could be that low carbs or ketosis reduce the body's ability to clear the alcohol, but in any event, the presence or absence of carbs appears to alter alcohol metabolism and intoxication speed/levels. In light of this, it doesn't seem like too much of a stretch to say that high carbs might also impede fat-fullness as well as alcohol-drunkenness.
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