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Originally Posted by deirdra
I can understand why we wouldn't want to eat huge amounts of excess protein, but is eating 90g instead of 50g really that hard on the body? He does not touch on this question in either of his books.
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I'm not surprised. Lots of metabolic science has come down the pike since then, and although
you might have no difficulty eating 90g of protein on a LC diet (like Atkins or PP), that just means you don't have the BCAA metabolic defect.
Folks that do, like me, cannot eat normal levels of protein IF we also eat modestly high fat diets -- like Atkins or PP, for instance. If we do, our bodies convert that additional 40g of protein into glucose by way of insulin production. In other words, for people like us, eating that much protein makes us more, not less, insulin resistant. There's no way JK could have known that way back when.
Dr. Bernstein must have had an inkling though, since in his seminal work on diabetes his prescription for what to do if you stall on a regular LC diet (one of the symptoms of BCAA metabolic defect) is to keep up the fat - but continue to lower protein until you begin to lose weight again, however slowly.
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On p102 he says diabetics should limit themselves to 50g +/- 15g (35-65) carbs to keep them out of ketosis. 35g takes me out of ketosis, so do I really need more?
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You? Probably not. But because of what BCAA does to people who can't process protein properly - which is intimately tied into what our bodies do with carbs and protein via gluconeogenesis -- we must eat the higher carb levels.
This probably explains the many posts on this forum over the years from people who said they were stalled no matter what they did, but upping carbs finally moved them past it. What we don't know is whether or not upping carb calories also meant (for them) reducing calories via protein a little. Or keeping protein the same but reducing fat a lot. That's because the metabolic defect apparently only 'manifests' itself when eating lots of fat.
Which is what drove me to K to begin with --- it was either lower protein and up fats and carbs, or go back to a low fat WOE where I could eat all the protein I wanted. I don't want to do that, so here I am - and it's working.
Lisa