I agree very much that more study is indicated but as long as cannabis is kept illegal and denigrated, who is going to admit to long-term use for longitudinal studies? Frther it is so hard to isolate and control all the variables and factors that someone with a gene mutuation encounter throughout life and I just don't think they will ever be able to say definitively that Eureka! Yes! This is the one drug out of all the drugs, alcohol, food additives this person ever ingested that kicked off that mutated (and rare) gene
As a result, people shrieking about the danger of weed smoking just look foolish and clueless to the large numbers of people who have tried or use cannibus regularly. And to make things worse it convinces people who quite sensibly support states rights to turn around and support the heavy hand of the federal government beause they've been frightened by the terror of climate change smoking weed.
You’re welcome.
I purposely put in references that included what I call “hedge words.” Scientists are trained to include the acknowledgement that their interpretations are subject to change; unfortunately, too many state their conclusions as the final word on the matter.
It’s actually fairly straightforward to determine that a particular disease, e.g. schizophrenia, has X% genetic component, and Y% environmental component (meaning that in the absence of X, Y, or both, the disease does not occur). Trying to determine exactly what the environmental component is, OTOH, very tricky.