Yes, there's no good cure for IBS. The only thing you can do, is be very nice to your internals.
Most carnivores report massive improvements to digestive health. Our digestive hardware shares more in common with carnivores than omnivores. The hardware we have for digesting plant material is a speck compared to that of a herbivore. This would suggest that our native diet as a species is meat based.
So by switching to this diet, your digestion is now on easy mode.
Yes, my T2D is in complete remission and the eye damage also healed.
The one time i saw a doctor in the last decade, i had my blood sugar tested. It was 80, above ideal. I don't have a blood sugar problem, because i'm not putting any sugar in, go figure!
The interesting thing about my body now, is if i go on a carb binge, even without any pure sugar in my diet, i gain weight extremely rapidly. I don't get high blood sugar, i just balloon. So the problem is still there for me, my body still over-reacts, and i will never be able to eat like a normal person, but i'm totally fine with that.
CBD is not cheating, but it is attacking a symptom. The good part is that it doesn't come with any negatives, like NSAIDs do ( NSAIDs stop the regeneration process and therefore lead to accelerated loss of cartilage long term, there's studies showing this! )
I find Boswelia is more effective than CBD on arthritis pain and also promotes joint lubrication. Of every natural pain reducer i've played with, it's the most potent. The red sappy kind is the most potent, the powdered stuff tends to be subpar.
But some people have a fantastic response to CBD, i don't, but certain strains of cannabis do wonders for my pain.
For arthritis i recommend taking collagen and glucosamine because these not only dull the pain but also promote small amounts of regeneration of cartilage, which itself adds to the pain reduction. They are both effective over a long tim span and not an easy fix. Bicycling at a light-medium intensity also promotes repair by stimulating proteolyglycans to do their thing... that's why it's part of every leg physical therapy regimen includes cycling.
This combination of supplements has been holding me together for 10 years, i have twisted bones and uneven friction on my leg joints so i have uneven wear and lots of inflammation.
However if you go long term on carnivore, you will find that ample cartilage building materials are already in your diet, especially if you consume a little cartilage off the end of a bone or skin. I'm more on the keto side because my body can handle the variety, so i do supplement.
Here's another aside. In research world, they're finding that digestive issues and mental health issues are VERY often interlinked. Some would say the gut is the second brain.
My major depression was mostly cured by keto/carnivore, however, i still somehow had a B vitamin deficiency because my body is bad at converting it ( B Vitamins must go a multi step process to be utilized ).
I have unnamed digestive problems but my dad has severe ones. He has transient psychosis and paranoia which seems to clear up temporarily when taking vitamin B shots. I have a little craziness, and depression slip in if i don't take my specialized B complex that's gone through 2 of the conversion steps for me. Luckily, it's not expensive.
I suspect most mental health issues are an inability to absorb certain vitamins. Someone with IBS probably falls into that category. Crazy inflammation and good nutrient absorption usually aren't happening at the same time.
If you have any inkling of mental issues then once you find the right diet to calm your guts down then you will probably see an improvement in that.