What point I am at for my Persuasive Letter.

My letter is going to be about Marijuana and its dangers. I don't believe marijuana is dangerous and I found an article that says that marijuana is dangerous. My letter will be written to the author of this article. I found some other articles that disproves what this author says about marijuana and I am going to use these articles to help me write this letter.

Persuasive Letter Topic: Marijuana

My persuasive letter topic is marijuana and im going to be arguing on how marijuana has no damaging effects to your health.
Adams, J. (2008, August 18). Damaging Habit? Los Angeles Times, p. 6.

This articles talks about the damaging effects of marijuana. It provides many case studies that try to prove that marijuana is a very dangerous drug, and some scientists even try to prove that marijuana can be more dangerous than alcohol and cigarettes. The article try's to prove that marijuana smoking can cause depression and psychosis. It also try's to explain how marijuana may be one of the most addictive drugs out there.