Marijuana use has increased from 10.4 percent of the population in 2002 to 13.3 percent in 2014 -- from 21.9 million to 31.9 million.
In the United States, the number of adult cannabis users has increased by ten million from 2002 to 2014, according to a new study. The increase coincided with a general rise in the potency of the popular recreational drug and a growing belief that it is not harmful, researchers wrote in The Lancet Psychiatry.
‘The rise in cannabis use is due to the legalization of cannabis for medical use in the United States.’
The findings, the US-based team, wrote, "suggest a potential benefit of education and prevention messages" even as many US states are relaxing cannabis policies. Based on a survey of over 500,000 US adults between 2002 and 2014, the study found that marijuana use rose from 10.4 percent of the population in 2002 to 13.3 percent in 2014 -- from 21.9 million to 31.9 million.
The number of daily or near-daily users was about 8.4 million in 2014, and they estimated -- up from 3.9 million in 2002.
The proportion of people who said they feared great risk or harm from smoking dope once or twice a week, dropped from 50.4 percent to 33.3 percent over the same period.
The study did not find a rise in so-called marijuana use disorders such as abuse or dependence.
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Critics of decriminalization have argued it will cause more people to take up the drug, which is partly what prompted the study.
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"It is probably too soon to draw conclusions about the effects of these legal changes on rates of cannabis use and cannabis-related harms, but it is likely that these policy changes will increase the prevalence and frequency of cannabis use," they said.
The trend is not a global one -- cannabis use in Britain has gone down in the last 10 years, according to Robin Murray of Kings College London, who also commented on the study.
Source-AFP