Just as important -- mybe more so -- is hearing loss, caused by artillery fire. I have hearing loss caused by having been too close to an explosion (don't ask), and trust me, hearing aids are only a partial answer.

There a few organizations right now looking into ways of genetically regenerating lost cochleal cilia cells, but the whole thing could be hugely speeded up if they had the kind of funding we dish out to Ukraine evry goddam day.