"Unscrupulous vendors are supplying them. But they're dicing with young people's lives," said Dublin City councillor Danny Byrne

A study published in the American Journal of Neuroradiology was led by a consultant neuroradiologist at Beaumont Hospital in Dublin, Seamus Looby.

They have also urged all of their Dáíl colleagues to also support Sinn Féin;s legislation to regulate the sale of nitrous oxide