Proposed causes of Alexander's death included alcoholic liver disease, fever, and strychnine poisoning, but little data support those versions.[15] According to the University of Maryland School of Medicine report of 1998, Alexander probably died of typhoid fever[16] (which, along with malaria, was common in ancient Babylon[17]). In the week before Alexander's death, historical accounts mention chills, sweats, exhaustion and high fever, typical symptoms of infectious diseases, including typhoid fever.
Also true, but I was saying that he probably could have performed even better through war, if he hadn't been as injured as he was at the end of his campaigns.
His decreased health at the end of his life was largely due to wounds from fighting. He probably would have been able to carry on his campaign longer, and would have made better decisions at the end of it, if his health were better.
https://en.wikipedia.org/wiki/Death_of_Alexander_the_Great