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Originally Posted by amandawood
Hi Dorian J,
Have you got any sources for these studies, just out of curiosity?
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Not handy, let me do a brief research and I will post some
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From my reading, if your metabolism is working "properly", your body will compensate for excess energy intake by simply burning it off as heat.
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This though would not be a "proper" metabolism, this would be a "deadly" metabolism. In our overweight society we're forgetting that storing fat is of vital importance for whatever living being. If we could not store fat as long as not many carbs are consumed, we would have been extincted for centuries. Also consider a girl who looses too much body fat and got amennoreah. If really eating certain foods would prevent her from gaining fat, she would be right in considering the whole human life pure junk.
The body can't compensate by dissipating extra calories as heat, because the body needs those extra calories. If there was an heat dissipating mechanism there would be no fat storage mechanism, and the fat storage mechanism is the only reason why we're having this conversation today.
Even people like Atkins or Eades agree that the "metabolic advantage" is like 100 calories or so, but it's impossible to claim that calories don't matter. Hunter-gather populations get fat eating meats and fat when a period of food shortage is predicted. They get again lean during the food shortage and are at their original thin weight when food abudance returns.
We know that carbs and proteins can be converted to fat through insulin action. But fat itself can be converted to body fat even in the absolute absence of insulin, through a fat storage enzyme whose function is exactly to store fat in the absence of carbs.
The body wants it to be calories in - calories out, I want it too .. because it's the only reason I'm alive today and the only reason I will be alive if I'll find myself in the middle of an economical crisis or war.
I think there's a metabolic advantage to low-carb diets, I think you can lose more visceral and abdominal fat, I think the true reason why they work so well for fat loss is appetite control, I also think that there's a lot of calories wastage as you move from a carb-based metabolism to a fat-based metabolism (and this is explains those studies) but the effect disappears as soon as one gets completely adapted to the next energy substrate. The body has no interest into wasting calories as extra heat, they're too important and rare, even if we've forgotten it in such a food abundance.
What Taubman fails to address is that studies which require people to report what they have eaten are completely flawed from the beginning, for the simple fact that people misreport all the time.
A study was conduted to estimate the proportion of people missreporting (writing down exaggerated serving, writing down food they haven't eat, odmitting foods they have eaten) and based on what they reported and what the actual amount of food they ate when on a controlled environment, it has been estimated that 95% of dietary studies subjects doesn't report properly the daily food consumed.