Keto Day 5. Feel horrible & want to quit. Friends not supportive

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  • Cocoa1020
    Cocoa1020 Posts: 197 Member
    medic2038 wrote: »
    Cocoa1020 wrote: »
    I'm studying nutrition... eating that low seems... pretty dangerous... I don't know much about the keto diet. except that your body starts to burn fat instead of carbs but... you can also mess around with your blood pH and your brain does need carbs to function.

    Is there a specific reason why you are doing Keto?

    Ketones aren't really any more acidotic than glucose. Metabolic acidosis is one of the fastest tickets to the morgue, if keto substantially altered blood PH (which it doesn't); most people wouldn't live too long on it.

    Don't confuse dietary ketosis with DKA, in which the primary acidosis cause is really really high blood glucose.

    Thanks, when I was learning about ketosis, it was in biochem and we were going over ketosis, acidosis, diabetes, etc everything so i might have gotten a little mixed up.

  • Cocoa1020
    Cocoa1020 Posts: 197 Member
    And to O.P, best of luck!
  • T1DCarnivoreRunner
    T1DCarnivoreRunner Posts: 11,502 Member
    Cocoa1020 wrote: »
    midwesterner85 wrote: »
    Cocoa1020 wrote: »
    our brain does need carbs to function.

    Wrong. Our brain / central nervous system needs glucose to function. We can make glucose from protein, so there is no requirement to eat carbs for glucose.

    Additionally, our brain can get some energy from ketones. Studies seem to consistently find decreased glucose needs of 10% per mmol/l of blood ketones.

    Since we all have about the same size brain, we all need about 120g-130g of glucose daily. Let's use 125g. If blood ketones are 3.0 mmol/l, then that is only 87.5g (125g × (1-30%)) of glucose.

    Net carbs convert to glucose at near 100%. Figure 15g carbs consumed. 87.5g - 15g = 72.5g

    Now consider protein converts to glucose at 58% efficiency (gluconeogenesis isn't very efficient)... to make the needed 72.5g of glucose, you use 125g (72.5g / 58%) of protein. This can come from food or body protein.

    That scenario ignores glycogen, which is usually released for energy during the first several weeks of low carb diets.

    I used the term carbs because it breaks down to glucose, I was just simplifying it.

    As I pointed out, carbs are not the only thing that becomes glucose. You "simplified" it to something that is incorrect... to say "our brain does need carbs" is not the same as saying "our brain needs glucose." How does the correct statement add any value to this thread?
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