Teenagers are in full physical and psychological development. This is why cannabis can cause them more problems than it does to adults. The younger one is, the greater the danger. The more one smokes, the greater the danger.
The brain develops mainly during the adolescence. Cannabis can have a negative effect on the brain: attention and memory decrease. The risks increase when one starts smoking from a very young age and in large quantities.
Cannabis can slow the learning process. One learns less well. One misses out on life experiences. One takes refuge in cannabis instead of learning to manage negative feelings. And one doesn’t learn how to feel better otherwise.