The government of Pakistan said Bin Laden purchased two dialysis machines before going into hiding.
According to interrogation of Bin Laden’s wife, he had kidney surgery and fully recovered.
Of course since they were so eager to throw this human garbage overboard for an “islamic burial”, this was never confirmed by autopsy.
Https://www.ajkd.org/article/S0272-6386(14)00002-X/fulltext
Richard Wright’s history of al-Qaeda debunks this. Dunno how reliable OBL’s wife was under CIA questioning.