7 ms·

"Sorry, keto fans, you're probably not in ketosis Then again, you shouldn’t be anyway." https://www.popsci.com/not-in-ketosis/ https://www.popsci.com/not-in-ke

"Sorry, keto fans, you're probably not in ketosis Then again, you shouldn’t be anyway." https://www.popsci.com/not-in-ketosis/ https://www.popsci.com/not-in-ketosis/

teilo 7y ago
This entire popsci.com article is utter nonsense. It is nothing but 1950's AMA talking points, and has long been debunked. There are many reasons, but the chief one is this: All else being equal, the rate of gluconeogenesis (GNG) in the body is constant. It happens all the time, for all people, even type 2 diabetics. It has no correlation whatsoever to protein intake, because the body will break down body tissues if there is not enough protein from other sources. Therefore, if this article were correct, then NO ONE would be in ketosis. But in fact, everyone who is in ketosis is also undergoing GNG. In fact, they are undergoing it at a faster rate, and yet, they remain in ketosis. GNG is providing just enough glucose for the handful of body tissues that cannot utilize ketones, and preventing the body from going hypoglycemic. Yet the bulk of the body, metabolically speaking, is using ketones. And besides the clear scientific reasons stated above, you have the millions of people who do keto, and regularly test their urine to know that they are in ketosis. QED. Ketosis is not that hard to get into. See this article, and check the references: https://perfectketo.com/gluconeogenesis/ https://perfectketo.com/gluconeogenesis/
- vo2maxer 7y ago
  Could you be more specific with what sentences or paragraphs in the article have been debunked? I can’t find where the author questions ketosis is happening or incorrectly defines gluconeogenesis or parrots 1950s AMA talking points. I’m not trying to start a long argument but would be very interested to learn where my own knowledge on the subject may be in error.
  - deleted 7y ago
    [deleted]
  - teilo 7y ago
    Just to be clear, I’m referring to the popsci.com article linked by the GP, not to the NYT article you posted. Pretty much the second half of the article. It claims that GNG prevents ketosis. It does not. It also claims that any amount of protein beyond the minimum results in GNG. Wrong again. The body is always undergoing GNG, and protein intake he nothing to do with it. Furthermore, there is a metabolic pathway by which ketones actually regulate GNG, preventing it from exceeding a certain level. See the article I linked. It has a good summary as well as links to the various papers on this subject.
    - vo2maxer 7y ago
      Sorry, I missed that completely. You’re right on all counts. Thank you for the clarification and your reference :-)
      - teilo 7y ago
        Easy mistake. I edited my original comment to clarify which article I meant.

"Sorry, keto fans, you're probably not in ketosis Then again, you shouldn’t be anyway." https://www.popsci.com/not-in-ketosis/ https://www.popsci.com/not-in-ketosis/

teilo 7y ago

This entire popsci.com article is utter nonsense. It is nothing but 1950's AMA talking points, and has long been debunked. There are many reasons, but the chief one is this: All else being equal, the rate of gluconeogenesis (GNG) in the body is constant. It happens all the time, for all people, even type 2 diabetics. It has no correlation whatsoever to protein intake, because the body will break down body tissues if there is not enough protein from other sources. Therefore, if this article were correct, then NO ONE would be in ketosis. But in fact, everyone who is in ketosis is also undergoing GNG. In fact, they are undergoing it at a faster rate, and yet, they remain in ketosis. GNG is providing just enough glucose for the handful of body tissues that cannot utilize ketones, and preventing the body from going hypoglycemic. Yet the bulk of the body, metabolically speaking, is using ketones. And besides the clear scientific reasons stated above, you have the millions of people who do keto, and regularly test their urine to know that they are in ketosis. QED. Ketosis is not that hard to get into. See this article, and check the references: https://perfectketo.com/gluconeogenesis/ https://perfectketo.com/gluconeogenesis/

vo2maxer 7y ago
Could you be more specific with what sentences or paragraphs in the article have been debunked? I can’t find where the author questions ketosis is happening or incorrectly defines gluconeogenesis or parrots 1950s AMA talking points. I’m not trying to start a long argument but would be very interested to learn where my own knowledge on the subject may be in error.
- deleted 7y ago
  [deleted]
- teilo 7y ago
  Just to be clear, I’m referring to the popsci.com article linked by the GP, not to the NYT article you posted. Pretty much the second half of the article. It claims that GNG prevents ketosis. It does not. It also claims that any amount of protein beyond the minimum results in GNG. Wrong again. The body is always undergoing GNG, and protein intake he nothing to do with it. Furthermore, there is a metabolic pathway by which ketones actually regulate GNG, preventing it from exceeding a certain level. See the article I linked. It has a good summary as well as links to the various papers on this subject.
  - vo2maxer 7y ago
    Sorry, I missed that completely. You’re right on all counts. Thank you for the clarification and your reference :-)
    - teilo 7y ago
      Easy mistake. I edited my original comment to clarify which article I meant.