Researchers from University College London in England have found that a single dose of cannabidiol (CBD) increases blood flow to the hippocampus, the part of the brain responsible for memory formation.
For the study, the researchers recruited 15 healthy young adult participants with little or no history of cannabis use. On occasions separated by at least a week, each person was given either 600mg of CBD or a placebo. Both the CBD and placebo were delivered in identical tablets.
The researchers then measured blood flow to the hippocampus using a magnetic resonance imagine technique known as arterial spin labeling. This meant they were able to measure changes in levels of blood oxygen.
All in all, the researchers found that CBD significantly increases blood flow to the hippocampus. They also noted that the compound increases blood flow to the orbitofrontal cortex, thought to have a role in decision-making.