> “However, this is not a study that anyone should look at and say, ‘Jury’s in, and cannabis use causes dementia,’” Myran said. “This is a study that brings up a concerning association that fits within a growing body of research.”
From the study:
> Individuals with acute care due to cannabis use were at lower risk than those with acute care due to alcohol use.
One likely explanation is that both cannabis and alcohol users abuse substances due to an underlying process that leads to dementia. There might be something that makes you a heavy user AND prone to dementia. But, of course, we can’t say that alcohol or weed are direct causes of the disease.
> Specifically, alcohol intake is negatively associated with global brain volume measures, regional gray matter volumes, and white matter microstructure. Here, we show that the negative associations between alcohol intake and brain macrostructure and microstructure are already apparent in individuals consuming an average of only one to two daily alcohol units, and become stronger as alcohol intake increases.
> “However, this is not a study that anyone should look at and say, ‘Jury’s in, and cannabis use causes dementia,’” Myran said. “This is a study that brings up a concerning association that fits within a growing body of research.”
From the study:
> Individuals with acute care due to cannabis use were at lower risk than those with acute care due to alcohol use.