I get the tachycardia, but was told it was common. I've been to the hospital a couple times for heart related problems due to things other than MJ. I still get the racing heart beat from time to time, and like birdgirl said, the sativa strains make it worse, which is why I smoke indica nowdays.

Most of my problem is due to panic, and anxiety, as they have found nothing wrong with my heart yet. It's scary when it happens, but for me, it only lasts between 30 mins to an hour.

I just try to stay calm, and relaxed and that seems to help, too.
JunkYard Reviewed by JunkYard on . smoking causing heart problems? About a week ago after smoking a bowl i laid down for about 30 minutes and my heart started beating fast so i got up went to a different room and sat down for a minute and when i stood up i got really light headed. My brother inlaw is a nurse and he said i should lay down so i did then began to have cold shakes and after laying down for a while my heart seemed to be beating normal. Now last night i smoked another bowl wasnt very high so i gave up and went inside when i stood up my heart started Rating: 5