I'm wondering about several posts that I have read here recently that seem to come from some folks new to the herb. I don't know what forum they are under but if you read them they all seem to have the same theme......the user had some sort of thought that they were having a heart attack, were going to faint.....etc...and write in asking why they had such bad experiences while smoking. They also fear for their health. It seems to me that that kind of fear could lead to emergency room visits for some. I personally don't believe m/j does this physically to PEOPLE.....underline people....but perhaps I am wrong. Whether or not the physical symptoms occur or paranoia or whatever I could certainly see some fearful people running to the er because of it.