Guernsey States is warning parents that there is 'no safe level' of alcohol consumption for young people and teenagers.
It's part of Alcohol Awareness Week which is spreading the message that drinking poses a 'serious health risk' for youngsters.
Health Officials say parents should never condone or turn a blind eye to drinking.
One consultant from Guernsey explains that brains can still be developing even in people's twenties, making it 'vulnerable'.
A radio campaign is being launched to raise awareness of the issue and posters are being spread across the island.