“To our knowledge, these are the first cases of suspected fatal cannabis intoxications where full post-mortem investigations… were carried out,” researchers said in the study, published in Forensic Science International this month. “After exclusion of other causes of death we assume that the young men experienced fatal cardiovascular complications evoked by smoking cannabis.”
http://time.com/10372/marijuana-deaths-german-study/
The closer you look, the worse it gets.