Background Cannabis is the most widely consumed illicit substance in America, with
increasing rates of use. Some theorists tend to link frequency of use with cannabis …

Background: In this research, the 'natural history'of cannabis dependence is probed, using
data from a large epidemiological sample of cannabis users followed from 1981 through …

Cannabis is the most widely used illegal drug in the US population. Surveys have estimated
that the lifetime prevalence rate for cannabis dependence is approximately 4%. Though the …

Abstract Introduction and Aims Given the increase in cannabis availability and use in North
America, identification of risk factors for cannabis use and dependence is paramount. One …

Aims To compare the prevalence of mental disorders between frequent cannabis users with
and without dependence and the general population. Design Cross‐sectional comparison of …

Objectives: Little research has investigated the demographic and symptom profile of medical
cannabis users in states in the USA that have legalized cannabis use. Methods: In the …

Background Frequent cannabis users are at high risk of dependence, still most (near) daily
users are not dependent. It is unknown why some frequent users develop dependence …

Eighty one percent of a sample of long-term cannabis users was followed up at 1 year
(162/200). Half (51%) were daily smokers, while 20% had substantially decreased or …

Background: Population-based surveys demonstrate cannabis users are more likely to use
both illicit and licit substances, compared with non-cannabis users. Few studies have …

Cannabis is the most widely used illicit drug in the United States, yet the role of genetics in
individual symptoms associated with cannabis use disorders has not been evaluated. The …