Mixed martial arts is legal and regulated but the British Medical Association - who've already called for boxing to be banned - claim it can lead to brain damage and bone injuries.
The call comes as London's O2 Arena prepares to host a cage fighting event on Saturday, after sell-out shows in Manchester and Belfast last year.
The Ultimate Fighting Championship - one of the biggest mixed martial arts organisations - say competitors are among the best-trained and conditioned athletes in the world and no-one's ever been seriously injured.
http://www.bbc.co.uk/radio1/news/newsbeat/070905_cage_fighting.shtml
http://news.bbc.co.uk/1/hi/uk/6906889.stm
http://news.bbc.co.uk/1/hi/health/6978438.stm
The call comes as London's O2 Arena prepares to host a cage fighting event on Saturday, after sell-out shows in Manchester and Belfast last year.
The Ultimate Fighting Championship - one of the biggest mixed martial arts organisations - say competitors are among the best-trained and conditioned athletes in the world and no-one's ever been seriously injured.
http://www.bbc.co.uk/radio1/news/newsbeat/070905_cage_fighting.shtml
http://news.bbc.co.uk/1/hi/uk/6906889.stm
http://news.bbc.co.uk/1/hi/health/6978438.stm