They are not warning the viewers about the possible effects of alcohol. They don't tell them that drinking too much is bad for your body and can cause you to pass out or even die from alcohol poisoning. Alcohol can alter your brain and cause you to make decisions that you normally wouldn't make, which can greatly affect your life.
I took index cards in nursing school and made flash cards. After making the cards I would go through them, made 2 piles ones I got right and ones I got wrong. I would continuously go through them til I memorized the material. it helped me alot