The girl, who is a member of pop group 3B Junior in Japan, was taking part in a game on a TV show that involved inhaling helium fas.
During the game she fell unconscious after suffering from an air embolism - meaning the blood supply to her brain was restricted.
As of Thursday, the girl has regained consciousness, after almost a week in a coma.
Executives from TV Asahi has apologised to the girl and her family for the incident, saying producers had overlooked a message on the canister that read: ‘For adults only.’
Although many inhale helium as a fun ‘party-trick,’ there are dangers associated with doing this.
‘Potential health effects of helium are dizziness, headache and suffocation’ says advice from the UK’s Public Health Agency.
‘Should anyone experience ill effects from inhaling helium, the advice is to get the person to breathe in fresh air immediately.’
If symptoms persist medical assistance will be required.