Well for one, natural sweeteners interfere with the bodies insulin response. I.e. it will overproduce in anticipation, but then your blood sugar drops into oblivion, because well, you didn't actually eat sugar. Is this bad? Probably not if you don't overuse them.
Besides that? I can tell you my body is very sensitive and artificial sweeteners (I literally tried all different kinds) make hell break lose in it, much worse than sugar could ever be. So perhaps they aren't such a great replacement after all? This usually applies to everything humans try to lazily swap out in foods. Oh so I am vegan? Keep these meat replicas coming, only they are like 100 times worse for your health than the real thing...
Besides that? I can tell you my body is very sensitive and artificial sweeteners (I literally tried all different kinds) make hell break lose in it, much worse than sugar could ever be. So perhaps they aren't such a great replacement after all? This usually applies to everything humans try to lazily swap out in foods. Oh so I am vegan? Keep these meat replicas coming, only they are like 100 times worse for your health than the real thing...