opiate linked? Opiates often paralyze peristalsis = gut walls die and perforate.

Nope I don't take any drugs of any kind. Low fibre in keto diet caused an obstruction and perforation.

Keto can definitely cause constipation under some circumstances, but I'd be dubious about linking it to fibre. Fibre also doesn't count towards carbs, so it's not something that you can't have.