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Researchers found that more days of use were correlated with decreases in inhibitory control, and visuospatial ability. Contrary to existing cross-sectional studies showing marijuana use in adolescence is associated with poor cognitive functioning, there were no associations between long-term cannabis use and memory and processing speed. [55]
European Monitoring Centre for Drugs and Drug Addiction has an interactive cannabis use map of Europe. One can select by recall period: last month, last year, or lifetime. Also by age: young adults (15–34), or adults (15–64). Hover over a country for the data. [13] A non-interactive map is below.
World map of annual cannabis prevalence. This is a list of the annual prevalence of cannabis use by country (including some territories) as a percentage of the population. The indicator is an "annual prevalence" rate which is the percentage of the youth and adult population who have consumed cannabis at least once in the past survey year.
Marijuana use is at an all-time high in the United States. In the past decade alone, Americans' reported marijuana smoking has more than doubled, increasing from 7% to 13% from 2013 to 2023, ...
Cannabis use has increased significantly around the world. Past research shows that regular cannabis use can increase a person’s risk for several health concerns, including risk factors for ...
A scientific review published in JAMA Psychiatry in 2016 found that people who use marijuana are more likely to develop temporary psychosis, as well as long-lasting mental disorders like ...
Local methods have differed by the preparation of the cannabis plant before use, the parts of the cannabis plant that are used, and the treatment of the smoke before inhalation. In early times, as in some parts of Africa today, a pile of cannabis was simply laid on a fire and the smoke inhaled. [ 3 ]
A growing body of research and numerous anecdotal reports link cannabis with several health benefits.