Do cannibals live longer than normal people?

Answer 1

Absolutely not. Many fall prey to prion disease [ like Mad Cow ] from eating brains, plus the liver is a filter for all kinds of nasty things, and can also make another person very ill. Cannibalism has never been particularly common anywhere. Even in those few areas where competing tribes would occasionally fight with each other and eat a conquered enemy, this was more worth more as a ritual than as a meal. And with current standards not even the survivors had particularly long lives. As for the even rarer criminals in "our" society who has on occasion eaten human flesh - well, there isn't enough of them to make a decent comparison group, and none of them has eaten enough people for human flesh to become an important part of their diet. The short answer is that it's impossible to tell but highly unlikely.

Answer 2

There is no scientific evidence to suggest that cannibals live longer than normal people. In fact, consuming human flesh can be extremely dangerous due to the risk of contracting diseases and illnesses from the person being consumed. Additionally, cannibalism is widely considered immoral and criminal in most societies.