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 Calorie in Calorie Out myth, It's not straightforward

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TSDrian
post Aug 16 2018, 06:29 PM, updated 6y ago

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https://idmprogram.com/the-failure-of-the-c...ory-of-obesity/




https://forum.lowyat.net/index.php?showtopic=3352099
I've argued this a long long time ago before that your calorie composition(types of food) is more important and that calorie in can affect calorie out.
Calorie out is not constant and it is also dependent on your calorie in.
The previous wisdom is you just need to control your calories in and that you're done.
If your daily calorie expenditure is 2200 calories then eating 1700 calories of sugar and eating 1700 calories of brocolli is the same thing and both will lead to the same result ~500 calories deficit. It turns out that is not true and that the hormones do affect you more than the your calorie intake itself.

This would explain why weight loss will just stop after a while after a restricted calorie intake and you have to lower it even more to lose more weight.

This post has been edited by Drian: Aug 16 2018, 06:33 PM
SUSslimey
post Aug 16 2018, 06:52 PM


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not a myth, just something that fits generally.

only extreme diets fall out of this general calorie in calorie out phrase.

also, the reason the calorie in has to be adjusted to weight because a person's weight is a rather big factor in a person's daily energy expenditure. lower weight, lower DEE, and hence need lower calorie to lose weight.
TSDrian
post Aug 16 2018, 07:04 PM

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QUOTE(slimey @ Aug 16 2018, 06:52 PM)
not a myth, just something that fits generally.

only extreme diets fall out of this general calorie in calorie out phrase.

also, the reason the calorie in has to be adjusted to weight because a person's weight is a rather big factor in a person's daily energy expenditure. lower weight, lower DEE, and hence need lower calorie to lose weight.
*
It doesn't explain why the lost of calorie expenditure is faster than the loss of weight. If you start to plateau at 1700 calorie after losing 5kg. Is that the hormones at work or is it because of the lost of body weight. Say from 83kg to 78kg. Is the 500 calorie/day lost in expenditure due to the lost of this 5kg worth of weight or is it because the body has adjusted to the calorie intake. Does 6% loss in body weight causes you to lose 23% in calorie expenditure?
SUSslimey
post Aug 16 2018, 07:11 PM


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QUOTE(Drian @ Aug 16 2018, 07:04 PM)
It doesn't explain why the lost of calorie expenditure is faster than the loss of weight. If you start to plateau at 1700 calorie after losing 5kg. Is that the hormones at work or is it because of the lost of body weight. Say from 83kg to 78kg. Is the 500 calorie/day lost in expenditure due to the lost of this 5kg worth of weight or is it because the body has adjusted to the calorie intake.  Does 6% loss in body weight causes you to lose 23% in calorie expenditure?
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yes and no.

it depends on the rate of calorie deficit.
any sudden shift in weight and the role of hormones will play great weightage. if the change is slow, there is little to none energy sparing group of hormones in play.
TSDrian
post Aug 17 2018, 01:00 PM

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QUOTE(slimey @ Aug 16 2018, 07:11 PM)
yes and no.

it depends on the rate of calorie deficit.
any sudden shift in weight and the role of hormones will play great weightage. if the change is slow, there is little to none energy sparing group of hormones in play.
*
Anyway this is just to highlight that calorie in calorie out theory that has been dished out by so many people here is not fully accurate.
You have to take into account how your hormones especially insulin behave when you eat.

This post has been edited by Drian: Aug 17 2018, 01:01 PM

 

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