Cannabis has now overtaken alcohol as the dominant problem drug for young Irish people.
However, alcohol remains the primary abuse substance for the older generation, and is linked to 73pc of admissions to addiction treatment centres.
One treatment centre which specialises in helping youngsters with addiction problems found that 62pc of admissions were now linked to cannabis abuse. Leading Irish addiction treatment centre Aiseiri warned in their 2013 annual report that the problem of poly-drug or multiple drug abuse was now increasing at an alarming rate.
Aiseiri - which operates treatment centres in Tipperary, Wexford and Kilkenny - treated a total of 444 people in 2013.
Of 297 people treated at the two main adult centres in Cahir and Wexford, just 38 refused to complete the treatment programme.
There has been a steady increase in the number of females seeking help for addiction problems, but treatment centres are still male-dominated.
Source: Ralph Riegel, Irish Independent, 06/10/14