Its probably a bit more than 1.
Marijuana-Attributable Deaths
December, 2014: The National Institute on Drug Abuse updated its marijuana research paper, saying, “Marijuana is the illicit drug most frequently found in the blood of drivers who have been involved in accidents, including fatal ones,” and citing research that marijuana is increasingly detected in fatal vehicle accidents.
December, 2014: Oklahoma authorities reported a man with marijuana both in his system and on his person drove into oncoming traffic, crashing into another vehicle and killing its driver.
May, 2014: A study published by the University of Colorado School of Medicine found that, “the proportion of marijuana-positive drivers involved in fatal motor vehicle crashes in Colorado has increased dramatically since the commercialization of medical marijuana in the middle of 2009.”
April, 2014: A 47-year-old Denver man allegedly shot his wife while she spoke with a 911 dispatcher over the phone. According to various reports, the wife called 911 after her husband consumed candy laced with marijuana and began hallucinating and frightening the couple’s children. Some sources indicate the man may have taken prescription drugs with the marijuana. CBS News reports that 12 minutes into the call with 911, the wife “told dispatchers her husband was getting a gun from a safe before a gunshot sounded and the line went quiet.” The marijuana candy had, apparently, been purchased a licensed shop in the Denver area.
April, 2014: Researchers writing in the Journal of the American Heart Association investigated marijuana’s effects on cardiovascular health. They reviewed 1,979 incidents from 2006 to 2011, and found, “there were 22 cardiac complications (20 acute coronary syndromes), 10 peripheral complications (lower limb or juvenile arteriopathies and Buerger‐like diseases), and 3 cerebral complications (acute cerebral angiopathy, transient cortical blindness, and spasm of cerebral artery). In 9 cases, the event led to patient death.” (Emphasis added).
March, 2014: A 19-year-old college student jumped to his death after eating a marijuana-laced cookie purchased at a licensed marijuana store in Colorado. Reports indicate the man began shaking, screaming, and throwing objects in his hotel room after eating the marijuana “edible.” He ultimately jumped over the fourth-floor railing, into the lobby of the hotel at which he was staying. According to CBS News, the autopsy report listed marijuana as a “significant contributing factor” to his death.
February, 2014: researchers from Germany determined the deaths of two apparently-healthy, young men were in fact the result of marijuana. According to their article published in the journal Forensic Science International. Researchers concluded, “After exclusion of other causes of death, we assume that the young men died from cardiovascular complications evoked by smoking cannabis.”
November, 2013: Seattle news outlets reported an elderly Washington resident was killed after a neighbor’s apartment exploded as a result of a hash oil operation. Hash oil is a highly-potent extract produced from marijuana using flammable chemicals such as butane.
June, 2013: A 35-year-old Oregon man died as a result of an explosion and fire caused by a hash oil operation he and a friend were conducting in a garage.
October, 2011: The Office of National Drug Control Policy released a report analyzing traffic accidents from 2005 – 2009. The report noted, “Among fatally injured males who tested positive for drugs, 28 percent tested positive for cannabinoids compared with 17 percent of females,” and that, “Cannabinoids were reported in 43 percent of fatally injured drivers under age 24 who tested positive for drugs.”
2004: A study in the official journal of the American Academy of Pediatrics examined case studies of three otherwise-healthy adolescent boys who were admitted to hospitals due to stroke following heavy marijuana use; two of the boys ultimately died, and the study concluded marijuana may cause stroke and death.