CBD does not appear to have any psychotropic ("high") effects such as those caused by ∆9-THC in marijuana, but may have anti-anxiety and anti-psychotic effects. As the legal landscape and understanding about the differences in medical cannabinoids unfolds, experts are working to distinguish "medical marijuana" (with varying degrees of psychotropic effects and deficits in executive function) – from "medical CBD therapies” which would commonly present as having a reduced or non-psychoactive side-effect profile.
However, Bonn-Miller told Live Science that he thinks cannabis research is on the upswing. "If we flash forward five years I think you'll see more studies," he said. Those studies could reveal more conditions that CBD may be helpful for and may also reveal that some of the reasons why people say they use CBD oil are not supported by the science but are instead a placebo effect. "And that's why we need to do the studies," he said.