The Press Association findings, released today, indicate that children as young as nine have been referred to treatment centres in the Scottish Borders.
They say their investigation revealed primary school children are being flagged as at risk of becoming addicts.
Treatment experts said the most common reason for children to come into contact with drugs and alcohol is through their parents.
Preventative work is key to heading off misuse among youngsters and nationally, charities have called for improved drugs education in schools.
Reacting to the Press Association findings the chairman of the Commons Home Affairs Select Committee said: