mecaib
Bluelighter
Says who? The notion that adult brains are static and unchanging is slowly being proved to be a long standing myth. Especially if you're using myelination as an example of harmfulness.
I'm not saying that the adult brain is static; I'm merely suggesting that the bulk of development occurs early-on.
How do adolescent and adult brains differ?
How do adolescent and adult brains differ? said:While a great deal of development occurs by early adulthood, the brain's total myelination may not actually reach its maximum until roughly age 45.
This indicates that the adult brain does change and continue to grow in later years. But does the change take place at the same rate as with younger adults and adolescents? Since most studies have made the distinction between the brains of adolescents and adults, it's safe to assume that the brain changes the most between childhood and adulthood.
the prefrontal cortex, which interacts with and in effect "reins in" the amygdala to temper impulsiveness and gut reaction with reasoning, does not fully develop until the early 20s.
If that statement is true, then it's a good reason to keep the drinking age at 21, and to keep drugs away from young people.
Here's another article, if you have the time to read it:
Studying Functional Differences in the Adolescent Brain
Personally, I would rather "be safe than sorry" when it comes to the health of younger people. Ignoring medical findings regarding brain maturation (or the lack thereof in adolescents) is simply negligent behavior.
"Yeah, I'll smoke pot with you little bro... when you grow up!"
