"Cannabis use in patients with MS was associated with lower proinflammatory cytokines and higher anti-inflammatory cytokines, along with improved clinical symptoms."
An interesting aspect of this study from February 2021 was that the objective was to determine whether "cannabis abuse" among MS patients was having a negative impact on their condition and treatment. What they found was the opposite. Most clinical symptoms were significantly improved in the MS/cannabis group ("cannabis abusers") compared to the MS control group.
The link to more details and the full text report is here.