Its been a while since I looked into this but from what i remember the acidity and carbonation are bad for your teeth, all the additives and artificial flavors and colors are bad for your kidneys and liver. I haven’t drank the stuff in a while so I don’t have any sources for you, but I would encourage you to talk to a doctor about it
Yea there are other things like the artificial sweeteners being bad for gut bacteria, but the main thing is the sugar for sure.