Diabetes is pretty prevalent in my family. I've got a great diet, but with my luck, I'll end up with it and struggle.
That or HIV, maybe? I uhh, don't wear condoms. Ever. And I have a lot of sex. I get tested frequently, but, yeah. That could always happen.
Breeders
Last time I checked, HIV never killed anyone and it is now considered a completely manageable condition.
This dude has never had sex.