system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What makes genetically modified foods so harmful to humans?
gpt
**Nothing.** People are concerned they might be harmful to humans but there's been nothing showing they are. 

We've been genetically modifying food for millenia through crossbreeding. Now science has gotten where we can genetically modify food by changing the genes directly and it's freaking people out.