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Nowhere did I state that metabolism doesn't vary across individuals. On the contrary I think that individuals have vastly different caloric requirements. None

by leshow 11y ago

Nowhere did I state that metabolism doesn't vary across individuals. On the contrary I think that individuals have vastly different caloric requirements. None of this means that a caloric deficit and increased activity won't cause all individuals to lose weight, just that the absolute value will differ between individuals.

mistermann 11y ago
> Nowhere did I state that metabolism doesn't vary across individuals. "the same thing will 'work' for everybody." "just an aside, there is no 'ultra efficiency mode' you comment here: >I just couldn't lose anymore despite caloric restriction is completely bogus, unless you're suggesting your body violates the law of conservation of energy" If metabolism can vary by individual, why is it impossible for the metabolism for one individual to change over time? Serious question, I honestly don't know.
DanBC 11y ago
> None of this means that a caloric deficit and increased activity won't cause all individuals to lose weight, just that the absolute value will differ between individuals. Do you accept that the caloric value may vary in one person due to changes in gut flora? Or changes in metabolism?
- leshow 11y ago
  Maintenance caloric requirements change as your body mass changes (and composition). It's pretty obvious that, for example, your maintenance requirement at 200 lbs will be different from your maintenance requirement at 150 lbs; you have less tissue to sustain.
  - mistermann 11y ago
    Any comments on the question asked? (Gut flora & metabolism)
    - mikekchar 11y ago
      Hopefully my previous answer will help you. Unless you can sustain nuclear reactions in your gut, you can't extract more energy from the food. It is not possible. You can easily extract less, though. The calculations are simple because that's how they were designed to work. Going the other way (gaining weight) is actually where it is problematic (because not all of the food value is used -- although bodies are remarkably efficient).
      - DanBC 11y ago
        The calorie value is an absolute upper bound. But some people have a gut flora that helps them extract more of those calories than the regular population. And some people have a gut flora that helps them not extract some of those calories. And since gut flora can change over time a person eating 2000 might be maintaining weight one year but gaining weight the next year with no change in food intake. I agree that people who say "I eat very little and I'm not losing weight" are mistaken.
        mistermann 11y ago
        > And since gut flora can change over time a person eating 2000 might be maintaining weight one year but gaining weight the next year with no change in food intake. Finally a voice of reason. Do you happen to know of any decent literature or particular keywords one might google to read up on this?

by leshow 11y ago

mistermann 11y ago

> Nowhere did I state that metabolism doesn't vary across individuals. "the same thing will 'work' for everybody." "just an aside, there is no 'ultra efficiency mode' you comment here: >I just couldn't lose anymore despite caloric restriction is completely bogus, unless you're suggesting your body violates the law of conservation of energy" If metabolism can vary by individual, why is it impossible for the metabolism for one individual to change over time? Serious question, I honestly don't know.

DanBC 11y ago

> None of this means that a caloric deficit and increased activity won't cause all individuals to lose weight, just that the absolute value will differ between individuals. Do you accept that the caloric value may vary in one person due to changes in gut flora? Or changes in metabolism?

leshow 11y ago
Maintenance caloric requirements change as your body mass changes (and composition). It's pretty obvious that, for example, your maintenance requirement at 200 lbs will be different from your maintenance requirement at 150 lbs; you have less tissue to sustain.
- mistermann 11y ago
  Any comments on the question asked? (Gut flora & metabolism)
  - mikekchar 11y ago
    Hopefully my previous answer will help you. Unless you can sustain nuclear reactions in your gut, you can't extract more energy from the food. It is not possible. You can easily extract less, though. The calculations are simple because that's how they were designed to work. Going the other way (gaining weight) is actually where it is problematic (because not all of the food value is used -- although bodies are remarkably efficient).
    - DanBC 11y ago
      The calorie value is an absolute upper bound. But some people have a gut flora that helps them extract more of those calories than the regular population. And some people have a gut flora that helps them not extract some of those calories. And since gut flora can change over time a person eating 2000 might be maintaining weight one year but gaining weight the next year with no change in food intake. I agree that people who say "I eat very little and I'm not losing weight" are mistaken.
      - mistermann 11y ago
        > And since gut flora can change over time a person eating 2000 might be maintaining weight one year but gaining weight the next year with no change in food intake. Finally a voice of reason. Do you happen to know of any decent literature or particular keywords one might google to read up on this?