Protein stimulates insulin release to a much lesser extent than carbohydrates, and this insulin response from protein is further reduced in a ketogenic or fat-adapted state.

“in terms of the extent at which protein would stimulate insulin it would never even be close to the amount that it would for carbohydrates and there's some context there as well isn't there because I've seen some data that been Beekman has presented I think it's in dogs that when you're not so when you're ketogenic or perhaps fat a doubt and I'm not absolutely sure how we quantify that physiologically the insulin response from protein is less than it is on a carbohydrate based diet”