[aYsY4dDQ2NrcNzA]

They’re probably talking about gluconeogenesis.

https://en.wikipedia.org/wiki/Gluconeogenesis

[tptacek]

Yes, but that's not a cite that says eating lots of protein can take you out of ketosis; it's just a Wikipedia article on gluconeogenesis.

[arcticbull]

I didn't believe it either... it seems to be mentioned in a bunch of keto literature online, like this one [1]. Some folks say it stimulates insulin, and some say it upregulates gluconeogenesis. I haven't found anything authoritative, so I remain skeptical.

[1] https://www.verywellfit.com/gluconeogenesis-2242007