Markass, one of the threads above was deleted, so you can't see that "that stuff" in my thread above wasn't a reference to cannabis. It was a reference to two other substances that are far more damaging.

Here are some links about the increased heart-attack risk:
http://www.researchmatters.harvard.e...article_id=123
http://www.abc.net.au/science/news/stories/s107589.htm
http://news.bbc.co.uk/2/hi/health/664296.stm

And here's a good one about the fact that, even though weed contains more carcinogenic chemicals than tobacco, it isn't associated with an increased risk of lung cancer. They think that's because the THC has a cancer-inhibitive effct. (We already know that it seems to have that same inhibitive effect on certain types of cancerous nerve cells in the brain.)
http://www.washingtonpost.com/wp-dyn...501729_pf.html
birdgirl73 Reviewed by birdgirl73 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