I’ve been keto/carnivore for over three years. I don’t cheat, but I do make planned exceptions for Thanksgiving Day and Christmas Day. Because I was still eating veggies and fruit, adding in a slice of apple or pumpkin pie on those days wasn’t really a problem. (Those were my non keto splurges.I didn’t go overboard.)
Anyway, this year as a result of strict carnivore, I don’t think I’m going to make those exceptions. I do believe the microbiome changes when we remove foods from our diet. I believe that some of the terrible feelings from adding non carnivore foods after we’ve been carnivore for a while is because our bodies need to rebuild (maybe just awake from hibernation) our microbiomes and maybe enzyme secretions. I am worried a slice or two of pie would overwhelm my body’s ability to process them.
It’s possible @Fangs is correct and it’s just the body reacting to toxins, but I think our bodies lose what we don’t use, too.
I’m giving my trial 6 months. If I don’t notice any improvements, I will more than likely add some foods back to my diet. You can bet, I will be adding things back very slowly and in small quantities.
Edit: Oh, and I’m just not a vinegar fan. My daughter loves kombucha. I think it’s disgusting.