football is more dangerous than boxing inmop. there is a reason why you have to wear a thick helmet, and body armour when you play. football players tackle eachother all day long, its very physical and injuries are pretty common. one of my friends broke his ankle during football when he was tackled and he had to have all kinds of pins and rods put through his bones.
boxing is relatively safe compared to football inmop. and all boxers wear headgear and mouthpieces to keep them safe when they train, only the professionals fight without them.