Alcohol is bad for child

If my children are teenagers, I will tell them alcohol is bad for them. Alcohol is unhealthy; it can make their minds unclear. It might make them have accidents. If they want to drink, I will tell them not to drive. It is very dangerous. It can make them die. Their growth is not done. So, if they drink early, it could make their growth late. When they drink too early, alcohol might make them get cancer or other diseases. I will show some addict video or pictures to them, and let them know drinking will make like those people.