CAYAD's senior advisor, Kate Duder says: "Someone showing they care about a person is most often a catalyst for users getting help for an alcohol or drug addiction.
"For many of the young people we interviewed, feeling like they didn't have anyone who cared about them led them to care less about themselves, which they felt led to increased alcohol and other drug use."
So the stars' videos have become part of the "Buzzed" social media campaign designed to reach out to young people and their families affected by drug and alcohol harm.
Where to get help
• The Alcohol Drug Helpline: 0800 787 797
• Youthline: Free text 234 or free phone 0800 376633
• Lifeline: 0800 543 354
And for more information, visit these websites:
Drughelp.org - Help
Drughelp.org - About MethamphetamineDrug Foundation - Methamphetamine Help