system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How does cannibalism cause madness?

I hear about proteins misshaping but what's the difference between a healthy humans meat and beef or pork that would cause the condition to happen?
gpt
It doesn't. There is a form of disease called a prion disease. This is caused by proteins improperly folding. Through completely random chance you could get one of these diseases spontaneously without anything causing it (Although that would be very unlikely). Then if someone ate you and ingested those prion proteins their own proteins can begin to fold incorrectly as well. 

This happened in Papua New Guinea where cannibalism was a part of funeral practices which allowed the disease to spread. So a prion disease spread called Kuru. The cannibalism is not the cause of the disease, it's just how it spreads.