NSW teen dead after lethal experiment

Dominica Sanda

The tragic death of a Sydney teenager who was found with a lethal amount of alcohol in her system has prompted police and academics to remind people of the lethal dangers of alcohol.

Paris Kamper, 15, was found unconscious at a semi-rural property in Kenthurst, in Sydney's northwest, on Friday night and died on Monday in hospital after clinging to life for nearly three days.

Early investigations show the young girl had consumed large amounts of alcohol and some other items which "led directly or indirectly to her death," Superintendent Rob Critchlow said.

Energy drinks were also found at the home, police said.

The hospital says her blood-alcohol reading was at 0.4 - well in the lethal range for alcohol.

Police are investigating the use of online material which may have influenced the excessive amount of alcohol consumed with Supt Critchlow saying the "tragic" incident was an "ill-informed experimentation".

"Drinking large amounts of alcohol no matter how much you dress it up is very dangerous, especially if you have no experience," he said.

He cautioned people to "show some maturity" when looking at online platforms that show drinking to be fun and not dangerous.

Ms Kamper, who had been drinking alone, was found in a "terrible state" by her sibling and friend in a yard at the property and then transferred to The Children's Hospital at Westmead.

Australian National University Senior Clinical Lecturer in Medicine, David Caldicott, says the combination of alcohol and caffeine can be dangerous.

He says such deaths are preventable but better information needs to be shared about the general harms of alcohol and the increased danger if it is mixed with energy drinks.

Tributes have been flowing for the teenager on social media, with her sister describing Paris on Facebook as a "beautiful" person.

Another friend posted on Facebook saying she was "the best friend a girl could ever hope for".

A post-mortem examination is due later this week.