I just asked gpt. I’m getting conflicting answers. It says it technically doesn’t break ketosis. But then when I ask it if it breaks a fast it says technically yes. I’ll have to read more on thi...
It will shift your body into a catabolic state thus breaking fast, but might not effect ketosis because you will still be in a fat burning state. Caveat not too much whey because large amounts of protein get converted into glucose that is why carnivore diet is not keto. But with all of this stuff there are contradictory opinions.