Smoking marijuana may double risk of stroke
Newly legal in two states in the U.S., marijuana is largely preceived by its users to have few major side effects. But a new study from the University of Auckland in New Zealand has found that smoking marijuana may more than double the risk of stroke among patients aged 18 to 55.
The study included 160 stroke patients who had urine screens upon admission to the hospital. The study found that 16 percent of stroke patients tested positive for marijuana, compared to 8 percent of control trials. The researchers concluded that this evidence was strong enough to draw a correlation between marijuana and stroke, though noted that future studies needed to be conducted to truly identify the link.
However, the study does caution against drawing a clear conclusion that marijuana use causes stroke, as all but one of the patients who tested positive for marijuana also regularly smoked cigarettes, which have long been linked to an increased risk of stroke.