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Man, this has to be the Ninjas Vs Pirates version of the drug family.
Really, it doesn't matter what you do in the privacy of your own home so long as youre not harming other people. I think they both have pros and cons and Ive never understood why these two drugs- out of all the drugs there are- are constantly seen to be in some kind of opposition to each other.
So just for fun, I will throw this out there for all those people who are always saying Mary Jane has no negative side effects.
Have fun 
quote:
Long-term heavy use of marijuana may cause two important brain structures to shrink, Australian researchers have discovered.
Brain scans showed the hippocampus and amygdala were smaller in men who were heavy marijuana users compared to nonusers, the researchers said.
The hippocampus regulates memory and emotion, while the amygdala plays a critical role in fear and aggression.
The study, published in the American Medical Association's journal Archives of General Psychiatry, also found the heavy cannabis users earned lower scores than the nonusers in a verbal learning task — trying to recall a list of 15 words.
The marijuana users were more likely to exhibit mild signs of psychotic disorders, but not enough to be formally diagnosed with any such disorder, the researchers said.
"These findings challenge the widespread perception of cannabis as having limited or no harmful effects on (the) brain and behavior," said Murat Yucel of ORYGEN Research Centre and the University of Melbourne, who led the study.
"Like with most things, some people will experience greater problems associated with cannabis use than others," Yucel said. "Our findings suggest that everyone is vulnerable to potential changes in the brain, some memory problems and psychiatric symptoms if they use heavily enough and for long enough."
Among the marijuana users in the study, the hippocampus volume was 12 percent less and the amygdala volume was 7 percent less than the men who were not marijuana users, the researchers said.
While about half of the marijuana users reported experiencing some form of paranoia and social withdrawal, only one of the nonusers reported such symptoms, Yucel said.
Yucel said the researchers have begun new research on the effects of both short-term and long-term and moderate and heavy use of marijuana
"When I was a child I flew! Then as an adult- I watched others soar."
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