American Journal of Cardiology reports that extensive use of marijuana doesn't hurt your cardiovascular system. Remember it also doesn't increase your risk of lung cancer. Previous MeFi
posted on Aug 12, 2006 - View this thread

Marijuana doesn't increase your risk of lung cancer. As presented at the American Thoracic Society International Conference today. "Even very heavy, long-term marijuana users who had smoked more than 22,000 joints over a lifetime seemed to have no greater risk than infrequent marijuana users or nonusers."
posted on May 23, 2006 - View this thread