Stoners have a reputation for being
exceptionally mellow, but a recent study of the
effects of marijuana use on daily behavior may
suggest otherwise. According to researchers
from Yale University of Medicine and the
Pennsylvania State University, the study found a
positive short-term correlation
between marijuana use and hostile and impulsive
behavior.
"Marijuana use is associated with changes in
impulse control and hostility in daily life,"
according to the study, published in March.
Researchers found that participants were more
aggressive on days they used marijuana, and the
following day, than on days they didn't get high.
The study analyzed 43 participants' marijuana,
alcohol, tobacco use and hostile and impulsive
behavior daily for 14 days using random effects
models. Scientists found that marijuana use
alone, without the alcohol and tobacco
combination, increased impulsive and hostile
behavior on the day participants used the drug
and the day after.
The study was brief, but due to the results and
increased recreational marijuana use,
researchers believe the topic warrants further
research.
A 2012 study in Biological Psychiatry found that
weed can cause anxiety for regular users during
periods of withdrawal and puts those with
genetic tendencies at risk for developing
schizophrenia, Cosmopolitan reported. Some of
the alleged negative side effects of
marijuana can be reduced if it's legal, regulated
and tested by health officials, according to
marijuana advocates. "People are used to buying
weed on the black market with no idea about
quality," deputy director of the National
Organization for the Reform of Marijuana Laws
Paul Armentano told Cosmopolitan. "As
consumers get more sophisticated, they'll
demand higher quality and better testing."
Another study on the effects of marijuana use
published in the Psychology of Addictive
Behaviors in September showed that the drug
had an indirect negative relationship with grades
among a cohort of college students. The study
showed students who smoked more went to
class less and therefore received relatively lower
grade point averages than those who didn't
engage in marijuana use.
In November, a survey of police officers across
the United States conducted by the U.S. Drug
Enforcement Administration showed that 6% of
the 1,000 officers surveyed reported
marijuana use as the biggest drug threat.
However, as of 2014 , no one had died from
marijuana use alone.

Source: http://news.yahoo.com/does-marijuana-affect-brain-behavior-190502531.html

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