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not losing weight when you don't eat enough

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perkymommy
perkymommy Posts: 1,642 Member
It never makes sense to me when I hear someone say if I don't eat enough calories each day that I won't lose any weight. Why is it then that I go out and see homeless people on the streets that are so frail and small from not eating enough food? or the anorexic who starve themselves pretty much to be thin? I struggled with anorexia in my teen years and young adult years and remember how easy it was to lose the weight by simply not eating much. So it is very possible to lose weight when you don't eat enough every day.
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  • sarahthes
    sarahthes Posts: 3,252 Member
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    Think it's a combination of things, lthough im pulling this out of my *kitten* and don't have any evidence, just hypotheses.

    1. Water retention from cortisol, as mentioned above.
    2. Just enough metabolic slow down that they're eating at maintenance. Biggest Loser effect.
    3. They're lying about how much they're eating. Often the one they are lying to is themselves...
  • AnvilHead
    AnvilHead Posts: 18,344 Member
    edited March 2017
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    sarahthes wrote: »
    Think it's a combination of things, lthough im pulling this out of my *kitten* and don't have any evidence, just hypotheses.

    1. Water retention from cortisol, as mentioned above.
    2. Just enough metabolic slow down that they're eating at maintenance. Biggest Loser effect.
    3. They're lying about how much they're eating. Often the one they are lying to is themselves...

    You're in the ballpark. A read to help understand it better: http://www.bodyrecomposition.com/fat-loss/another-look-at-metabolic-damage.html/

    A choice excerpt:
    ...Because in no study that i have ever seen or ever been aware of has the drop in metabolic rate (whether due to the drop in weight or adaptive component) EVER exceeded the actual deficit whether in men or women. Fine, yes, it may offset things, it may slow fat loss (i.e. if you set up a 30% caloric deficit and metabolic rate drops by 20%, your deficit is only 10% so fat loss is a lot slower than expected or predicted) but it has never been sufficient to either stop fat loss completely (or, even to address the even stupider claim being made about this, to cause actual fat gain)...

    ...Because the science doesn’t support it in any way shape or form. No study in humans in 50 years has ever shown the claimed phenomenon. I mean not ever. Not a single study showing truly stopped fat loss in the face of a controlled deficit much less fat regain. And with plenty of other mechanisms (like water retention) to explain the “apparent” lack of fat loss that make more logical sense (Occam’s razor for the win).
  • SLLRunner
    SLLRunner Posts: 12,942 Member
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    perkymommy wrote: »
    It never makes sense to me when I hear someone say if I don't eat enough calories each day that I won't lose any weight. Why is it then that I go out and see homeless people on the streets that are so frail and small from not eating enough food? or the anorexic who starve themselves pretty much to be thin? I struggled with anorexia in my teen years and young adult years and remember how easy it was to lose the weight by simply not eating much. So it is very possible to lose weight when you don't eat enough every day.

    It's just another excuse for not losing weight. I know, I've used just about all the excuses, and I also have an eating-disorder past.
  • Pale_Green
    Pale_Green Posts: 64 Member
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    I hate the term starvation mode. The body is not starving. But adaptive thermogenesis is a real thing. And it doesn't make you so you stop losing...but it can slow the process.
  • 3rdof7sisters
    3rdof7sisters Posts: 486 Member
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    People just resent the idea of eating less. "Starvation mode" is such a convenient excuse to not make an effort to lose weight.

    This!

    Believe me, if you don't eat, you'll lose weight (and be totally unhealthy)!

    ^This

    And you absolutely can, and will, starve to death if you do not eat.
  • ndj1979
    ndj1979 Posts: 29,136 Member
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    think of it this way ..if starvation mode is real, then why do people die of starvation...?
  • Need2Exerc1se
    Need2Exerc1se Posts: 13,576 Member
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    It doesn't make sense because it's not true.
  • JohnnyPenso
    JohnnyPenso Posts: 412 Member
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    Pale_Green wrote: »
    I hate the term starvation mode. The body is not starving. But adaptive thermogenesis is a real thing. And it doesn't make you so you stop losing...but it can slow the process.
    Correct and I think this is what people are either experiencing or referring to when they talk about starvation mode. AT can slow you enough that it might appear temporarily that you aren't losing weight, especially if combined with a cortisol response to lower caloric intake. One could go weeks without appearing to lose weight while eating a very low number of calories.
  • dfwesq
    dfwesq Posts: 592 Member
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    It's also worth considering that losing a lot of weight while remaining healthy requires time. A diet that's too low in calories or nutrients probably isn't sustainable over time, at least not for most people. It's not healthy and you feel awful and can't wait to get back to "normal" eating. And even if it is temporarily sustainable, it doesn't take care of the problem of maintaining a healthy weight. So as a practical matter for most overweight people, eating far too few calories won't lead to long-term fat loss.
  • Gallowmere1984
    Gallowmere1984 Posts: 6,626 Member
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    dfwesq wrote: »
    It's also worth considering that losing a lot of weight while remaining healthy requires time. A diet that's too low in calories or nutrients probably isn't sustainable over time, at least not for most people. It's not healthy and you feel awful and can't wait to get back to "normal" eating. And even if it is temporarily sustainable, it doesn't take care of the problem of maintaining a healthy weight. So as a practical matter for most overweight people, eating far too few calories won't lead to long-term fat loss.

    Pretty much. It's essentially a niche dieting strategy best left to those who A: know what they are doing, and B: have monk level self-control. Is that elitist of me? Yeap. It's also extremely realistic.
  • Tacklewasher
    Tacklewasher Posts: 7,122 Member
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    Pale_Green wrote: »
    I hate the term starvation mode. The body is not starving. But adaptive thermogenesis is a real thing. And it doesn't make you so you stop losing...but it can slow the process.
    Correct and I think this is what people are either experiencing or referring to when they talk about starvation mode. AT can slow you enough that it might appear temporarily that you aren't losing weight, especially if combined with a cortisol response to lower caloric intake. One could go weeks without appearing to lose weight while eating a very low number of calories.

    Most talking about starvation mode are just underestimating their intake. Fix the tracking and the weight loss picks back up.