Drug Usage

Estimated prevalence and trends in use of various substances by young people and adults in the United States and worldwide.

Marijuana Decriminalization and Substitution Effects

(Marijuana Decriminalization and Substitution Effects) "In conclusion, our results suggest that participation in the use of both licit and illicit drugs is price sensitive. Participation is sensitive to own prices and the price of the other drugs. In
particular, we conclude that cannabis and cigarettes are complements, and there is some evidence to suggest that cannabis and alcohol are
substitutes, although decriminalization of cannabis corresponds with higher alcohol use. Alcohol and cigarettes are found to be complements.

Marijuana Use and Other Illicit Drug Use by 50 Year Old High School Graduates in the US, 2012

(Marijuana Use and Other Illicit Drug Use by 50 Year Old High School Graduates in the US, 2012) "Among 50-year-old high school graduates in 2012, we estimate that about three quarters (74%) have tried marijuana, and that about two thirds (64%) have tried an illicit drug other than marijuana. (These estimates are adjusted to correct for panel attrition, as described in chapter 4 of Volume II.)

Comparison of US and Europe

(Comparison of US and Europe) "Although statistics on drug use in the United States are not fully reliable, the numbers available indicate that US consumption of cocaine and marijuana has been essentially stable for many years—although considerably reduced from its peak in the 1970s and 1980s. The data also show that, today, the United States consumes illegal substances at a rate some three times that of Europe—although the use of drugs in the EU continues to grow rapidly and a few countries actually consume more per capita than the United States.

Afghan Opiate Use

(Afghan Opiate Use) "Illicit drug use has increased across the country, dramatically so for opium, heroin and other opiates. In four years, the number of regular opium users in Afghanistan grew from 150,000 to approximately 230,000 ? a jump of 53 per cent. The numbers are even more alarming for heroin. In 2005, the estimate of regular heroin users in the country was 50,000, compared to approximately 120,000 users in 2009, a leap of 140 per cent.