The social media boozing fad "neknominate" could cause serious health problems, says a Tauranga addiction expert.
Neknominations are the latest social media craze involving a person drinking a bottle of alcohol, usually a beer, as quickly as possible on camera in an unusual way and nominating two friends to do the same.
The name comes from the word "necking", slang for quickly downing a drink.
The craze has been condemned by health professionals, particularly as some videos show young teenagers taking part.
One video was of a 6-year-old being encouraged by an unseen adult to drink a Heineken.