Allegedly he gained weight and shaved off the beard...
Hard to gain weight with kidney failure, isn't it?
Unless, of course, he is on medication like steroids which will make you gain weight.
On dialysis, if I remember correctly, the weight you gain is water weight. If Bin Laden's gained weight, I'd guess he'd look a little puffy ... especially around the cheeks.
The good news is ... I don't think gaining water weight when you're on dialysis is an especially good sign.
The other news is ... maybe he managed to get a kidney transplant, since he probably has access to the best medical treatment in Iran? Pakistan? Wherever ....