Diarrhea for 3-4 weeks at the start of a carnivore diet is common and due to increased bile release and adaptation of the small intestine.

“I had probably three to four weeks of diarrhea when I started carnivore diet and a lot of people will message me and say if I eat plants it immediately goes away and my symptoms almost invariably come back you know you'll say I get more depressed or my stomach gets bloated or my rashes come back but my diarrhea stops I want to highlight that the loose stool the diarrhea is not an issue in my opinion probably nor Mikayla's at the beginning of carnivore this is a change over in terms of your gut flora and the fact that as you're eating more meat or entirely meat without plant foods you're probably getting a bigger release of bile and that bile is gonna have a lot of bile salts and the small intestine needs time to learn how to reabsorb those more avidly one if the bile salts pass into the colon you they will cause catharsis and you'll get diarrhea I think that's the main thing going on for people”