There has to be something in this - you know I am getting quite upset at all this "cutting down and rationing veg" that is all over the internet. When I first read on here about all these bladder issues, and was astonished that I had never come across them, I rushed around asking everyone I knew with gps whether this was a problem they had come across., but it wasn't. So then when I started reading about all the restricted veg etc I actually asked three people with long lived healthy guineas about their diets - and like me, it's mainly unlimited vegetables and grass.
At the risk of horrifying the entire internet, I feed kale every single day! Until I empirically prove otherwise, I am convinced that gps were not meant to be fed such a dry diet and the amount mine drink when grass and veg are rationed is proof to me too. Also I feed what must be by internet standards a huge amount of vegetables! I deliberately feed the veg with the most amount of water in when I can, but mostly like furryfriends, they just get the lot! It is rather an "all you can eat buffet", as they do not all like the same things.