AIDS effects the bodies ability to stop bleeding and he had a lot of blood. It could've been consumption too. And there isn't really a "back then" because Naruto doesn't really have a year...And they color TVs....I'm pretty sure AIDS was around when we got color TVS.
Also WIldTangent I love you're Ava/sig
WoW really? AIDS? I think your IQ just dropped. Why would kishi introduce such a disease to an anime/manga? Makes no sense because people can tell he used a lot of bloodline limit + we all know the uchiha suffer from short life span. Also, you don't go for low things like heart failure, long cancer, or tumor. Nooooo, you go for the highest sh*t ever, it's like you suggesting he got it from someone because that's how is transmitted . Seriously -.-