Marijuana protects the brain from alcohol damage

Here is evidence that using marijuana shields the brain from a significant amount of the damage that alcohol causes. If you are drinking, you should probably be toking. Also recall that a recent study concluded that: "There is no safe threshold for alcohol consumption with regards to cancer," and recall that ample evidence shows that using marijuana causes cancer cells to die off thus lowering the risk for everything from lung to head and neck to bladder cancers as well as lymphoma. Prohibition is carcinogenic. White Matter Integrity in Adolescents with Histories of Marijuana Use and Binge Drinking  J. Jacobus,a,b T. McQueeny,g S. Bava,b,c B. C. Schweinsburg,e,f L.R. Frank,d T. T. Yang,c and S. F. Tapertb,c, Abstract: Structural brain abnormalities have been observed in adolescents with alcohol use disorders but less is known about neuropathological brain characteristics of teens with subdiagnostic binge drinking or the common pattern of binge drinking combined with marijuana use. The goal of this study was to examine white matter integrity in adolescents with histories of binge drinking and marijuana use.Diffusion tensor imaging DTI was conducted with 42 adolescents ages 16−19 classified as controls, binge drinkers, or binge drinkers who are also heavy marijuana users. Tract based spatial analysis identified shared fiber structure across individuals and facilitated voxelwise comparisons of fractional anisotropy FA and mean diffusivity MD between groups.Significant between group differences were found in FA in eight white matter regions ps ≤ .016 between the binge drink-only group and controls, including superior corona radiata, inferior longitudinal fasciculus, inferior fronto-occipital fasciculus, and superior longitudinal fasciculus. Interestingly, in 4 of these same regions, binge drinkers who are also heavy marijuana users had higher FA than binge drinkers who did not use marijuana ps < .05. MD did not differ between groups. Findings are largely consistent with research suggesting less neuropathology in adolescents without histories of substance use. However, binge drinkers who also use marijuana did not show as consistent a divergence from non-users as did the binge drink-only group. Detection of white matter alterations may have implications in identifying early cognitive dysfunction in substance using adolescents.Keywords: Adolescence, Brain Imaging, Marijuana Abuse, Alcohol Abuse, White Matter, Diffusion Tensor Imaging

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