Introduction and conclusion of an essay

INTRODUCTION

As we can see, there are different types of drugs and different ways of taking them. They are used chiefly by teenagers who want to experience "new sensations". Above all, their use is illegal because they produce harmful effects on human body despite young people do not realize.

CONCLUSION

To sum up, drugs are illegal substances which affect negatively our health. However, teenagers who take them are not aware of the consequences and become drug addicts. Anyway, autorities ban them and, in the future, they will disappear creating a better world.