Artificial sweeteners are really problematic and the worrisome thing is they've snuck into everything, right? So people advertise like low sugar and you think, okay, this has less sugar, but what they mean is it's got artificial sweetener in it. And the reason they don't contribute calories is because they're not absorbed in the small intestine.
So they float on down to the colon where they get fermented by gut bacteria, but they get fermented into harmful post metabolic products, not healthy things like short chain fatty acids. And some of that too, they'll give you gas. If you've ever had like diabetic candy with a lot of artificial sweetener, one of the first things you'll see is, oh, I'm having terrible bloating and gas.