Harry was going to pass away eventually

[DinoNerd89]

Like i just posted in another thread, heavy health drink consumption lead to it. Thats gonna be my head-cannon. damn them side effects!

[Malzarre]

It does make me wonder what lead to it. Unless I'm mistaken, I think the two main things that can lead to liver cancer would be cirrhosis of the liver either through heavy drinking, or consuming a lot of fatty foods

But I could be way off on this