Love meat? Who doesn't? But here's the thing. There's an overwhelmingly large amount of antibiotic-resistant bacteria in ground beef. So much that ingesting uncooked beef can cause serious troubles for you. And that's a problem since a lot of people love their steaks on the rare side. 

The study says that common bacteria found on beef are clostridium perfringens, E. coli, enterococcus, salmonella, and staphylococcus aureus. A fifth of the beef was infected with C. perfringens, a bacteria associated with food poisoning. 10% also tested positive for S.aureus, a bacteria that can't be eliminated with cooking. 1% had salmonella.

This is all the more reason to only have grass-fed beef.