There really isn't any hard evidence to back up that statement, which is used by the Prison Industrial Complex to argue against legalizing.
Let's look at the full picture...
Legalizing marijuana in the US....
1. new jobs + taxes = +$300 billion per year to Uncle Sam
2. stop enriching and empowering the criminals dealing it now, most of them out of the country
3. create new jobs in the US, not just growing selling and transporting, but the HEMP stuff too is huge...
Legalizing marijuana is a huge win win win for America
Keeping it illegal just continues to enrich and empower
lawyers
prison guards
drug dealers
narcotrafficantes
Personally, I'd like to help America now....
You have no supporting reliable sources or working links.
You tout various "benefits" but you fail to mention the harm done by legalizing this dangerous drug.
https://www.webmd.com/mental-health/addiction/marijuana-use-and-its-effects#2
1. Marijuana and the Brain
Regular marijuana use affects parts of the human brain, such as those that govern attention, coordination, decision-making, emotions, learning, memory and reaction time. To see a visual diagram of the brain, highlighting the parts this drug affects; click here.
2. Heavy marijuana use can lower a growing human being’s IQ
Yes, they are plenty of smart people around who used to smoke unholy amounts of marijuana in their youth, but a scientific study conducted in Dunedin, New Zealand, revealed some stark results.
The Dunedin study focused on 1037 people who were born in 1972/73 and followed them into their early 40s. What did the researchers learn?
Subjects who began to smoke pot early and did so frequently lost up to 6 points of their IQ by the time they were 38. Unfortunately, this group of subjects, at the age of 38, had an IQ that was lower than 70% of their peers.
Some subjects began smoking weed as adults with fully developed brains, and they did not suffer a loss in their IQs, though when adults who smoked weed often as teenagers quit the habit, they did not regain the IQ points they had lost, suggesting that the changes to their abilities may be permanent.
3. Daily smokers of pot are less likely to graduate from high school
The Lancet, a weekly peer-reviewed general medical journal, published statistics gathered by researchers in Australia and New Zealand that seem to show that teenagers who smoke weed daily are 60% less likely than those who do not smoke weed to graduate from high school.
And with 60% of the jobs offered in the American workforce requiring applicants to have a high school diploma, graduating from high school matters.
Critics of the above statistics suggest that the subjects who smoke weed daily have other things in common that could lead to their dropping out of school, like the judgment of their teachers, problematic family structures and so on. Still, the correlations in the data exist, and point to a worthy concern.
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4. Does pot smoking lead to schizophrenia?
In 2002, the Dunedin study referred to above, revealed a strong correlation between marijuana smoking and schizophrenia in youth. The journal
Addiction has published an article that suggests regular users of marijuana have double the risk of developing schizophrenia; so 14 in 1,000 of non-marijuana users will develop schizophrenia as compared to 7 in 1,000 for those who have had no interaction with the drug.
The National Academies of Science, Engineering and Medicine reported, in January of 2017, that youth who smoke marijuana do risk schizophrenia. Meanwhile, the Harvard Review has published a study suggesting that schizophrenia is likely passed on throughout a family rather than by being brought on by marijuana use, so it is fair to say that there continues to be some dissension in the medical community.
The Centers for Disease Control and Prevention have put it this way: For youth with a family history of schizophrenia, marijuana use can further this risk.
5. Suicide risk?
The National Drug and Alcohol Research Centre at the University of New South Wales conducted research that showed young people who start to smoke marijuana before the age of 17, and do so daily, are 7 times more likely to commit suicide than young people who do not smoke marijuana regularly.
Suicide is the second most common cause of death for teenagers in America.
6. Anti-social behavior
According to the Centers for Disease Control and Prevention, Teenagers who regularly smoke marijuana may begin to stay away from sports games, social activities and even family get-togethers, as they want to smoke pot. One in 6 teens who regularly use marijuana will become addicted to the drug and will withdraw from social activities as a result.
Reading about the potential effects of marijuana on the growing human brain can be a downer; no parent (or child) wants to feel defeated upon learning that using marijuana may have already negatively affected your child’s brain. Learning more about this drug and how it may affect your child will provide you with the tools you will need to confront this issue in a positive, useful way.
https://www.beachway.com/effects-marijuana-teen-developing-brain/