I had mine removed in '16, after being keto for just over a year and then more like LCHF before that. I find I can eat anything.
A year ago, after a couple months of NOT fasting, I found I had problems when I tried to fast. That is, I didn’t have problems from eating fat, I had problems from not eating fat (or anything). About 42 hours into a fast I had raging diarrhea. I discovered this around a year ago.
Someone here suggested it could be due to that bile not being absorbed. There are prescription drugs for that which are really cholesterol lowering drugs, but not statins. After some reading, I found that those were a lot like dietary fiber and decided to try a bottle of Metamucil fiber supplement. I can’t say I understand all this, but I know that since around the start of last May, when I started the Metamucil, I can fast at will and I have no problems eating or not eating.