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A study that followed children from birth to mid-life found that heavy marijuana users who smoked for years often fared worse as adults than their parents: Many ended up in jobs that paid less, required fewer skills and were less prestigious.
That wasn't so much the case for other people.
"The rest of the people in the study who were not regular and persistent cannabis users ended up in a higher social class than their parents," said Magdalena Cerda, lead investigator and associate professor at the University of California, Davis.
The study, published Wednesday in the journal Clinical Psychological Science, also found that marijuana users who smoked at least four times a week experienced more financial difficulties, such as problems with debt and food insecurity, than their parents. Their lives were fraught with more social problems, too.
"They experienced more anti-social behavior at work such as lying to get a job or stealing money and more relationship problems such as intimate partner violence or controlling behavior towards their partner," Cerda said.
Other studies have associated heavy and persistent marijuana use with problems in adulthood but haven't always ruled out other factors. This research tried to do that by tracking and comparing variables such as intelligence, family structure, gender, ethnicity, parental substance abuse, criminal convictions and anti-social behavior and depression in childhood.
In accounting for so many variables, researchers made the study's conclusions stronger, Cerda said, acknowledging that there may be unknown factors that they didn't track.
Dr. Colin Roberts, a pediatric neurologist at Oregon Health & Science University and a member of Oregon's Cannabis Research Task Force created to study medical marijuana, said the findings are worth considering.
"It's a good study," Roberts said. "They established an association that's pretty compelling."
The study's sample size, almost 950 people, also gives it heft, he said.
The study is based on four decades of data collected in New Zealand, where marijuana is illegal. Investigators have been following people born between 1972 and 1973 in Dunedin, the second largest city on the South Island. The participants in the study come from a range of socio-economic classes, from professionals to unskilled laborers, who had physical, psychological, social and financial assessments at birth and ages 3, 5, 9, 11, 13, 15, 18, 21, 26, 32 and 38.
Read More http://www.oregonlive.com/marijuana/index.ssf/2016/03/study_regular_long-term_mariju.html
That wasn't so much the case for other people.
"The rest of the people in the study who were not regular and persistent cannabis users ended up in a higher social class than their parents," said Magdalena Cerda, lead investigator and associate professor at the University of California, Davis.
The study, published Wednesday in the journal Clinical Psychological Science, also found that marijuana users who smoked at least four times a week experienced more financial difficulties, such as problems with debt and food insecurity, than their parents. Their lives were fraught with more social problems, too.
"They experienced more anti-social behavior at work such as lying to get a job or stealing money and more relationship problems such as intimate partner violence or controlling behavior towards their partner," Cerda said.
Other studies have associated heavy and persistent marijuana use with problems in adulthood but haven't always ruled out other factors. This research tried to do that by tracking and comparing variables such as intelligence, family structure, gender, ethnicity, parental substance abuse, criminal convictions and anti-social behavior and depression in childhood.
In accounting for so many variables, researchers made the study's conclusions stronger, Cerda said, acknowledging that there may be unknown factors that they didn't track.
Dr. Colin Roberts, a pediatric neurologist at Oregon Health & Science University and a member of Oregon's Cannabis Research Task Force created to study medical marijuana, said the findings are worth considering.
"It's a good study," Roberts said. "They established an association that's pretty compelling."
The study's sample size, almost 950 people, also gives it heft, he said.
The study is based on four decades of data collected in New Zealand, where marijuana is illegal. Investigators have been following people born between 1972 and 1973 in Dunedin, the second largest city on the South Island. The participants in the study come from a range of socio-economic classes, from professionals to unskilled laborers, who had physical, psychological, social and financial assessments at birth and ages 3, 5, 9, 11, 13, 15, 18, 21, 26, 32 and 38.
Read More http://www.oregonlive.com/marijuana/index.ssf/2016/03/study_regular_long-term_mariju.html
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