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This exploratory pilot study investigated the effects of chronic Δ-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) on cerebral glucose metabolism in people with multiple sclerosis (PwMS). Compared with nonusers, THC users had hypermetabolism of 3 regions (p < 0.039, d >1.17) in left temporal areas, while CBD users had hypometabolism of 5 regions (p < 0.032, d > 1.31) in left temporal areas. This study highlights the need to discriminate between THC and CBD in future cannabis studies. Novelty Chronic THC and CBD use had disparate effects on cerebral glucose metabolism in PwMS.
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Workman et al. (2019) studied this question.
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