We’re asking the wrong questions about pot – politicsdiscussion.com gas monkey


May 27, 2018 (Windy Hill Beach) — A professor of psychology and neuroscience has an op ed today which highlights the risk of replacing our nation’s failed policy of marijuana prohibition with a policy – legalization – which may be even more harmful. Here’s some highlights from Prof. Judith Grisel’s article:

The debate around legalization [of marijuana] — which often focuses on the history of racist drug laws and their selective enforcement — is astoundingly naive about how the widespread use of pot will affect communities and individuals, particularly teenagers…[S]cience… is producing inconveniently alarming studies about what pot does to the adolescent brain.

…[B]etween 30 and 40 percent of high school seniors report smoking pot in the past year, about 20 percent got high in the past month, and about 6 percent admit to using virtually every day. The potential consequences are unlikely to be rare or trivial…

…[H]eavy-smoking teens show evidence of reduced activity in brain circuits critical for flagging newsworthy experiences, are 60 percent less likely to graduate from high school, and are at substantially increased risk for heroin addiction and alcoholism. They show alterations in cortical structures associated with impulsivity and negative moods. They’re seven times more likely to attempt suicide.

Recent data is even more alarming: The offspring of partying adolescents, specifically those who used THC, may be at increased risk for mental illness and addiction as a result of changes to the epigenome — even if those children are years away from being conceived. The epigenome is a record of molecular imprints of potent experiences, including cannabis exposure, that lead to persistent changes in gene expression and behavior, even across generations. Though the critical studies are only now beginning, many neuroscientists prophesize a social version of Rachel Carson’s “Silent Spring,” in which we learn we’ve burdened our heirs only generations hence.

Might the relationship between marijuana exposure and changes in brain and behavior be coincidence, as tobacco companies asserted about the link between cancer and smoking, or does THC cause these effects? Unfortunately, we can’t assign people to smoking and nonsmoking groups in experiments, but efforts are underway to follow a large sample of children across the course of adolescent development to study the effects of drug exposure, along with a host of other factors, on brain structure and function, so future studies will probably be able to answer this question.

… I’ve been sober since 1986 and went on to become a teacher and scholar. The single-mindedness I once directed toward getting high came in handy as I worked on my dissertation. I suspect, though, that my pharmacologic adventures left their mark.

Now, as a scientist, I’m unimpressed with many of the widely used arguments for the legalization of marijuana. “It’s natural!” So is arsenic. “It’s beneficial!” The best-documented medicinal effects of marijuana are achieved without the chemical compound that gets users high. “It’s not addictive!” This is false, because the brain adapts to marijuana as it does to all abused drugs, and these neural adjustments lead to tolerance, dependence and craving — the hallmarks of addiction.

… Instead of rushing to enact new laws that are as nonsensical as the ones they replace, let’s sort out the costs and benefits, using current scientific knowledge, while supporting the research needed to clarify the neural and social consequences of frequent use of THC. Perhaps then we’ll avoid practices that inure future generations to what’s really important.