When I took a drug psychology class in college, I was shocked to learn that there is a small subset of marijuana smokers who become compulsively addicted to what most people consider a harmless substance. They suffered from the classic symptoms of addiction and withdrawal, and it was all based on just smoking weed! I had no idea this could be the case.
I began looking into it and thought it would make an interesting paper for my research class, and one thing led to another, and the case study turned into a small book.
Now the small book is going to turn into a real book. 
