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It's also not true that changes in body fat are proportional to calorie surplus.

leshow 5y ago
What are you basing that on? There's a lot of other factors to consider... exercise and type of exercise, macronutrient breakdown, how large the surplus is, etc. edit: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5786199/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5786199/ have a look at this, it shows that hypercaloric diets will produce weight gain, and macronutrients have an effect on composition.
- woopwoop 5y ago
  Why would changes in body fat be proportional to calorie surplus? Fat is not the only thing on the human body that stores energy. It is stored in proteins as well.
  - leshow 5y ago
    Fat is the main storage mechanism for surplus energy, not proteins. Proteins are relatively "expensive" to create and break down. Again, lot of other factors at play here, have a look at the linked paper.
    - woopwoop 5y ago
      The paper does not say that calorie surplus was proportional to fat gain. It says that there was considerable variability in weight gain and fat gain, and that on average only 50% of the weight gained was fat. Also, regardless of what the body's primary storage mechanism is, it's just obviously true that adult mammals experience changes in the amount of protein stored on their bodies on the same timescales as weight gain and loss occurs. Anyone who has ever started or stopped an exercise regime has experienced this.
      - leshow 5y ago
        I didn't link this study because it included the words "fat gain is proportional to caloric surplus", neither is it meant to be all encompassing on what the body does in a surplus. The study is evidence that macronutrient composition has an effect on how much fat you gain, and I gave some reasoning for why this is the case. If you're not convinced then I suggest you do some more digging, I don't have time to find the all relevant papers for you. > it's just obviously true that adult mammals experience changes in the amount of protein stored on their bodies on the same timescales as weight gain and loss occurs. The body has both catabolic and anabolic processes running concurrently all the time, you'll see increase in one kind of tissue when overall one of these processes is more active than the other. caloric intake and macronutrient breakdown obviously affect these processes, as does exercise.

What are you basing that on? There's a lot of other factors to consider... exercise and type of exercise, macronutrient breakdown, how large the surplus is, etc. edit: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5786199/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5786199/ have a look at this, it shows that hypercaloric diets will produce weight gain, and macronutrients have an effect on composition.

woopwoop 5y ago
Why would changes in body fat be proportional to calorie surplus? Fat is not the only thing on the human body that stores energy. It is stored in proteins as well.
- leshow 5y ago
  Fat is the main storage mechanism for surplus energy, not proteins. Proteins are relatively "expensive" to create and break down. Again, lot of other factors at play here, have a look at the linked paper.
  - woopwoop 5y ago
    The paper does not say that calorie surplus was proportional to fat gain. It says that there was considerable variability in weight gain and fat gain, and that on average only 50% of the weight gained was fat. Also, regardless of what the body's primary storage mechanism is, it's just obviously true that adult mammals experience changes in the amount of protein stored on their bodies on the same timescales as weight gain and loss occurs. Anyone who has ever started or stopped an exercise regime has experienced this.
    - leshow 5y ago
      I didn't link this study because it included the words "fat gain is proportional to caloric surplus", neither is it meant to be all encompassing on what the body does in a surplus. The study is evidence that macronutrient composition has an effect on how much fat you gain, and I gave some reasoning for why this is the case. If you're not convinced then I suggest you do some more digging, I don't have time to find the all relevant papers for you. > it's just obviously true that adult mammals experience changes in the amount of protein stored on their bodies on the same timescales as weight gain and loss occurs. The body has both catabolic and anabolic processes running concurrently all the time, you'll see increase in one kind of tissue when overall one of these processes is more active than the other. caloric intake and macronutrient breakdown obviously affect these processes, as does exercise.