Yes, my reaction to marijuanna was very bad also. It only took one to do that. Yet it takes more cigarettes to produce the same toxic reaction. I agree here that they are worse. As with alcohol, it's also a mind altering substance but seems to cause long term effects, unless the person is lucky enough to quit before it reaches that point. I'd hate to think how I'd have been if I had kept it up. I was heading down that road, but only due to the toxic reaction did I stop (I should thank the toxic reaction).