“There was no evidence that marijuana use was associated with an increased risk of ischemic stroke in adolescents and young adults, a researcher said here.
“Our data did not support” a link between the drug and stroke risk”
http://www.medpagetoday.com/meetingcoverage/aan/45577
“Cannabinoids in experimental stroke: a systematic review and meta-analysis. Cannabinoids (CBs) show promise as neuroprotectants with some agents already licensed in humans for other conditions. Cannabinoids reduced infarct volume in transient and permanent ischemia and in all subclasses: endocannabinoids, CB1/CB2 ligands, CB2 ligands, cannabidiol, Δ9-tetrahydrocannabinol, and HU-211. Overall, CBs significantly reduced infarct volume and improve functional outcome in experimental stroke.” http://www.ncbi.nlm.nih.gov/pubmed/25492113