It is hard to talk with you children about serious problems like alcohol drinking or family issues.
Children are very susceptible and they might not understand the severe consequences of alcohol at such a young age.
However, if you want to keep your child well informed and save him from alcohol related problems in the future, you will have to talk to him about it at some point.
There are some ways to talk with your children in order to help them understand the perils of alcohol.

1. You should watch a movie related to alcoholism or substance abuse.
   After the movie, the child will definitely have questions for you.
   You should also ask how they felt about the movie and what their opinion on alcohol is now.
   
2. Another way to start discussing about alcohol is to bring up a subject from the media or a person the child knows.
   You should explain how that person started drinking and what were the difficulties and struggles that they had to face.
   
3. Encourage your child to talk more about their problems.
   This way, when you start a conversation topic they will be more willing to talk about whatever may concern you.
   
4. Talk to the parents of your child's friends, and discuss about making an event where your children can have fun and learn about the perils of alcohol.
   This way, you can educate your children, be in touch with their friend's parents in order help each other, and warn your child and his friends about the consumption of alcohol.
   
5. The simplest way to talk with your child is to actually start talking about it.
   If your child tells you that he has consumed alcohol, don't be mad.
   It's a sign they trust you.
   Tell them about the risks they exposed themselves to, and ask them not to do it again since it will be bad for their health.
   

I know it's hard to talk to your children nowadays, but it's better to find time and talk to them than to find out they actually have a drinking problem later in life.