system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do bad things happen when we humans or animals eat food from our species? aka Cannibalization

Ive heard stories of people who have lived off human meat start getting uncontrollable shakes, animals getting sickness even when the "meat" is cooked.
gpt
None of the replies in here really address the issue.

Yes, bacteria, parasites, viruses, fungus and prions can be spread through cannibalism, but that isn't unique to cannibalism. Those can be spread through any food we eat! There is nothing inherently more dangerous about eating meat within your species, moral issues aside of course.

NO- transplant reactions do NOT occur with cannibalism or any animal eating their own species. Transplant reactions occur when our T-cells reject transplants as non-self. The gut is constantly exposed to non-self, and so has different immune "rules' that govern it, including higher tolerance to those types of things.

And yes some people are probably wondering about Kuru, also called the "shaking death", which is where those urban legends probably stem from OP. Kuru is a nasty prion disease endemic to a tribe in New Guinea that practiced cannibalism. Kuru kept getting passed down between generations because younger generations continued to eat the infected meat of older generations.  Its wasn't a problem specifically with the cannibalism per se. Prion diseases suck, and can be passed through infected meat of many different species.

So there are no special biological or physiological results from species eating their own species.