Cannabis vs. alcohol: economic and social impacts
As the legality of cannabis drifts through a period of flux, the spotlight of scientific research is rarely far away. A new study, following heavy cannabis users, yields further insight into the drug’s financial and social ramifications
Both legal and public opinion of cannabis is changing in America.
Today, in Alaska, Colorado, Oregon and Washington, the possession and sale of cannabis for medicinal and non-medicinal purposes is legal.
Washington, DC, legalized the personal use (but not commercial sale) of cannabis in 2015.
And a national survey conducted in 2013 found that 52% of Americans thought marijuana should be made legal.
As the law steadily softens across the country, research into the long-term effects of cannabis is more important than ever.
Cannabis research on the rise
Despite these controversies, a study team, led by Magdalena Cerdá at the University of California, recently conducted a thorough investigation into the social and economic aspects of heavy cannabis use.
Alcohol abuse is more likely than cannabis to play a role in events such as traffic accidents and violence. However, when cannabis and alcohol’s effects on relationships, delinquency and education are measured, results are less conclusive.
The number of potential factors to consider are vast, making results difficult to analyze and interpret. These factors include the likelihood of cannabis and alcohol users to abuse other drugs; also, the illegal status of cannabis means that users might be tied to other illegal activities, or incarcerated, both of which have negative consequences unrelated to cannabis itself.
Additionally, heavy cannabis use from an early age might have its roots in underlying psychopathology or preexisting social or economic problems at home.
Cerdá’s research attempts to head off as many of these confounding variables as possible.
A fresh look at the impact of cannabis
The study, published in Clinical Psychological Science, uses data from the Dunedin Multidisciplinary Health and Development Study that followed 1,037 New Zealand children from birth until the age of 38.
The group represented a cross-section of the population and received a maximum of 11 follow-up assessments over the years.
For the current study, the researchers utilized data from 947 individuals.
According to Cerdá, the team found that “regular cannabis users experienced downward social mobility and more financial problems such as troubles with debt and cash flow than those who did not report such persistent use.”
“Regular long-term users also had more antisocial behaviors at work, such as stealing money or lying to get a job, and experienced more relationship problems, such as intimate partner violence and controlling abuse.”
These findings remained constant even after controlling for factors such as childhood socioeconomic problems, lower IQ scores, depression and antisocial behavior in adolescence, lower motivation to achieve, higher levels of impulsivity, criminal convictions and the abuse of alcohol and other drugs.