In August 2017, a study published in the journal Neuropsychopharmacology suggested that pot smokers could have a greatly reduced risk of stroke. Researchers from the University of Texas at Dallas found chronic cannabis users have higher blood flow to the brain and extract more oxygen from cerebral blood flow than nonusers. THC is known to relax blood vessels.
These changes effectively reduce the risk of stroke and blood clots.
The study should be
taken with a grain of salt, however, as it included fewer than 200