Yes I know as diabetes does run in the family but it is good that you also let others know. In my case though we have always been heavy water drinkers. We typically put the 8 glasses a day recomendation to shame especially in the summer. In my daughters case I sometimes think it might have been a comfort thing since she never had a baby bottle but from the time she could hold a water bottle she was constantly stealing mine. I guess she associated it with security.so lucky said:Wow, that is a great solution. My grand daughter isn't that thirsty, tho. She and her sister will go practically all day without drinking or peeing. But she still manages to wet the bed at night. She just sleeps so soundly that you could set off dynamite beside her and she would only turn over in her sleep.
One thing others with your situation might watch for tho: persistant thirst is one of the signs of type 1 diabetes, so if your young'un is always thirsty, you might want to check with your doc.
About that sleeping soundly thing she'd sleep through smoke alarms and the thing is right outside her bedroom door which was. Always kept open.