This seems like a XKCD / Randall Munroe "What if" kind of question. I.e., how long would a person survive if all of the water inside them was turned into wine?
A quick search suggests that blood is 80% water. Turning that into wine at a weak concentration of 5.5% results in around at 14.5% BAC which is over 10 times greater than the highest ever recorded, so it would be certainly lethal.
Seconds as wine amd water do not have the same consistency. Your blood cells won't move effectively enough and a BAC of 6% is extremely fatal as most will die at .6%
I don't believe you can figure out the water content of a living human. And if you can, I don't want to know how.
You could just weigh a mummified body instead, figure out how much a living person of the same sex and height would weigh, and the difference would be water. (Not accounting for the internal organs that were removed during mummification).
The show directly addressed this with blood bending, maybe not as viscerally as I've seen online but it definitely did. Like if water benders can build enormous ice walls they're definitely the most dangerous benders in Avatar. They could absolutely rip a person's soft tissues off their bones if they tried. It's just seen as so morally wrong that few benders even think about it. Like how we generally view mutilating a body in our societies or other strong taboos.
Which makes no sense considering there's a war going on. The fire nation goes around burning ppl alive. The last thing I would care about is the moral high road when my opponent genocided a bunch of monks.
Also reminds me of the lactokinetic in Misfits. He appeared harmless, but if you had consumed any dairy products that were still in your body, he could kill you instantly.
This is actually (spoilers for terrible movie Scales: Mermaids Are Real) the climax of the movie Scales. Mermaids can control water and their blood heals people in that movie, so hunters are trying to get their blood and then one guy tries a last ditch bad guy move and the main character pulls all the water out of his body and he horrifically melts.
Kind of made me side with the hunters at that point it's a horrifying power.
Shame all his enemies are demon type who are immune to blood attacks, of course he can perform the cleansing ritual that has advantage against demon types casting possess so he isn't completely useless it's still a waste of a spell slot.
I can also give you an army of Aquaman, how cool is that?
(don't hurt me if I made an unholy crossover, I have no idea which heroes belong to which universe)
Indeed Professor X is Marvel, Aquaman is DC, and Jesus is New Testament Comics. There are arguments over ownership of some NT characters though, it's complicated.
If you could control the percentage and get rid of those pesky wine parts, this would be a damn useful power, kill, incapacitate or make drunk depending on BAC.
Excellent against superheroes, most of them are lightweight tea totals, although a mean drunk Superman would be a bad day. Might be tricky to judge the level with the Supes from The Boys though...