The elderly who just don't take enough waterin, ok. You can have hyper natrima a number of different ways. So youcan have normal water volume in the body, but much sodium because you've ingested it or you're not getting rid of it. Ye, yes. O, not geting rid of it, and sodand so and you can also have netrimia, hyper netrimia,. But with high water levels in the body that would cause a dee adema - which is what was producing hype voleti.