16-Year Study: Medical Marijuana Laws Decrease Underage Use

Results of a large-scale, 16-year anonymized research project found that states with Medical Marijuana Laws (MMLs) and decriminalization statutes, underage cannabis consumption declines, especially among minority youth.

One concern some have regarding legalization of cannabis – whether for Medical (MMJ), or Adult Recreational Use (ARU) – is whether or not it will adversely affect youth. Specifically, a question often asked is, “will legalizing cannabis increase underage consumption?”

Lead Researcher Dr Rebekah Levine Coley said that, “Some people have argued that decriminalizing or legalizing medical marijuana could increase cannabis use amongst young people, either by making it easier for them to access, or by making it seem less harmful.”

“However, we saw the opposite effect,” said Dr Coley, and noted that results of the 16-year-long study show that in states where MMJ is legal, rates of underage consumption of cannabis have declined.

Those findings occurred even after accounting for other variables, including policies on

Teen Grey Matter and Cannabis Use

In a recently published article entitled “Grey Matter Volume Differences Associated with Extremely Low Levels of Cannabis Use in Adolescence,” in the Journal of Neuroscience, 14 January 2019 edition, pp3375-17, researchers wrote in part that “We identified extensive regions in the bilateral medial temporal lobes as well as the bilateral posterior cingulate, lingual gyri, and cerebellum that showed greater GMV in the cannabis users.”

News items related to that newly published research are focusing upon that singular line as if it’s something negative. Since when did INCREASED grey matter become something dangerous, or cause for concern? Colloquially, the term “grey matter” is used to describe the brain, and by extension, brain power. So let’s examine this matter (no pun intended) in more detail.

But before proceeding further, it bears mentioning that adolescents should NOT be consuming cannabis, neither alcohol, nor tobacco. And try as much as we want, we will not ever stop underage consumption of any adults-only substance. The BEST we can do is to educate them, and others, of potential risks involved in its use – especially and particularly underage use – and deny them opportunities to consume alcohol, tobacco, and cannabis. THAT is a strategy which has PROVEN to work, because the trite “Just say ‘no'” has never worked, nor will it ever.

Dr David Robert Grimes is a physicist, cancer researcher and science writer, who was the joint recipient of the 2014 Nature / Sense About Science Maddox Prize and wrote in a brief anti-marijuana article dated 15th May 2017 entitled “The rise of the cannabis cult: don’t believe the hype about medical marijuana” that