The focus on the corpus callosum reminds me of the research that suggests men and women have variations there. [1] (Sexual dimorphism). This research is contro

The focus on the corpus callosum reminds me of the research that suggests men and women have variations there. [1] (Sexual dimorphism). This research is controversial [2], but there does seem to be evidence [3] for it. I am curious how that relates to this research. i.e. It's easy to reach for the "damage" label when it's really about "different," which is why it's egg-shellish to discuss sexual dimorphism. A confounding factor is that this brain structure varies quite a bit among individuals and in age, but only in women and much larger study groups are needed. [4] It's possible these brain structures are more involved with personality and physical maturity and show up as defects under a normative mindset. This writeup suggests possible less efficient information, but maybe that's what "feeling chilled out" means and maybe it's actually better for individuals and humanity to be chilled out once in a while. So in conclusion, I wouldn't say this means we need to study cannabis more, but we need to study the brain more! Also: How obnoxious is it of the Guardian to link to the journal, but not the article?! That undermines my trust in their write-up. If you consider the extra time the author could have made to get to the article itself, presuming he/she has actually read it and has a link somewhere, it must be near-zero. Then you consider the amount of time interested readers like me have to go searching for it, times the number of readers, the benefit/waste is just irresponsible. And this seems to be the norm for newspaper articles. It's a sad state. [1] https://en.wikipedia.org/wiki/Corpus_callosum#Sexual_dimorphism https://en.wikipedia.org/wiki/Corpus_callosum#Sexual_dimorph... [2] http://gormanlab.ucsd.edu/courses/files/psy222/Bishop.pdf http://gormanlab.ucsd.edu/courses/files/psy222/Bishop.pdf [3] http://www.ncbi.nlm.nih.gov/pubmed/15891572 http://www.ncbi.nlm.nih.gov/pubmed/15891572 [4] http://www.jneurosci.org/content/11/4/933.short http://www.jneurosci.org/content/11/4/933.short