Readable research linked to original sources
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Browse normalized, publication-ready research with direct links to its evidence and source.
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Readable research linked to original sources
Browse normalized, publication-ready research with direct links to its evidence and source.
Loading articles data…
Readable research linked to original sources
Browse normalized, publication-ready research with direct links to its evidence and source.
39 articles
Newest firstBackground Given the frequent use of cannabis for sleep and mental health symptoms, we aimed to prospectively examine the reciprocal relationship between sleep, mental health, and cannabis use from before, during, and 1 year after the implementation of COVID-19 stay-at-home orders. Methods Five hundred thirty-four young adults (21-34 years old) from Oregon and Washington States who previously completed a survey on…
Open article record in new tab ↗Introduction Cannabis is the third most used drug in the world with emerging legalization in the US and other countries. In a descriptive analysis, we report trends in cannabis use and types of products used in the VapeScan longitudinal study, a cohort study of young adults designed to investigate subclinical health effects of e-cigarette use. Methods The VapeScan study recruited 372 adults aged 18-50 years in the…
Open article record in new tab ↗Background The co-occurrence of cannabis use and internalizing symptoms, such as depression and anxiety, during emerging adulthood (18-25 years) is well documented. However, while bidirectional relationships are often assumed, empirical evidence is mixed. This study investigates bidirectional longitudinal relationships between cannabis frequency and consequences and internalizing symptoms (depressive and anxiety)…
Background and aims The transdiagnostic Syndrome Model of Addiction considers addiction as a syndrome with multiple opportunities for expression, i.e., a common underlying disorder that may manifest in distinctive ways. Considering that testing of the model has been rare, this study examined the co-occurrence of symptoms of substance use disorders and behavioral addictions over 10 years by identifying profiles and…
Open article record in new tab ↗This study compares the developmental course of cannabis use in adolescents with versus without an immigrant background. Data came from a Swiss prospective-longitudinal cohort study (n = 1445) with nine assessments between ages 7 and 24. Parents reported their immigration history; adolescents self-reported their past-year cannabis use five times between ages 13 (in 2011) and 24 years (in 2022). Latent growth curve…
Open article record in new tab ↗PURPOSE: To examine whether trajectories of health (depressive symptoms, psychological wellbeing, self-rated health, and body mass index) and health behaviors (smoking, heavy alcohol consumption, physical inactivity, and cannabis use) changed for individuals who first reported at least monthly religious attendance and then in subsequent study waves reported no active religious attendance. METHODS: Data were from f…
Open article record in new tab ↗Introduction This study examines the impacts of anxiety and depressive symptoms on subsequent initiation of alcohol use, cannabis use, and prescription opioid misuse among diverse adolescents attending high schools on or near a Tribal reservation in a rural Great Plains region of the U.S. Methods In collaboration with Emory University and a Great Plains Tribal nation's behavioral health organization, a community r…
Background To assess whether changes in breakfast and water consumption during the first full school year after the emergence of the COVID-19 pandemic varied based on sex/gender, race/ethnicity, and socioeconomic status among Canadian adolescents. Methods Prospective annual survey data collected pre- (October 2019-March 2020) and post-COVID-19 onset (November 2020-June 2021) the Cannabis, Obesity, Mental health, P…
Open article record in new tab ↗Rationale For decades, cannabis has been the most widely used illicit substance in the world, particularly among youth. Research suggests that mental health problems associated with cannabis use may result from its effect on reward brain circuit, emotional processes, and cognition. However, findings are mostly derived from correlational studies and inconsistent, particularly in adolescents. Objectives and methods…
Open article record in new tab ↗Prior studies have linked young people's community service to indicators of health, yet little research takes the long view by connecting youth's community service to health in the next decade of life. Using a lifespan developmental lens, this study examined community service over the transition to adulthood and uses change over time in community service to predict indicators of behavioral, physical, and psycholog…
Open article record in new tab ↗Co-occurring cannabis use is common among those with opioid use disorder (OUD), but the extent to which it is harmful may be due to its preparation and concentration of various cannabinoids. The current study aimed to examine the prevalence of, and long-term associations with, the use of varying cannabis products among a naturalistic longitudinal cohort of people with heroin dependence. A total of 615 people, most…
BackgroundThe causal impacts of recreational cannabis legalization are not well understood due to the number of potential confounds. We sought to quantify possible causal effects of recreational cannabis legalization on substance use, substance use disorder, and psychosocial functioning, and whether vulnerable individuals are more susceptible to the effects of cannabis legalization than others.MethodsWe used a lon…
Highlights•Substance use disorder (SUD) is a risk marker for gambling disorder (GD)•Temporal order between SUD and GD does not differ for males and females.•A previous history of SUD should be accounted for in screening and prevention of GD. IntroductionPrevious research has established co-occurrence between substance use disorders (SUDs) and gambling disorder (GD). Less well understood is the temporal sequencing…
Open article record in new tab ↗Background Synaptic loss is characteristic of many neurodegenerative diseases; it occurs early and is strongly related to functional deficits. Objective In this longitudinal observational study, we determine the rate at which synaptic density is reduced in the primary tauopathies of progressive supranuclear palsy (PSP) and corticobasal degeneration (CBD), and we test the relationship with disease progression. Meth…
Background Ineffective cannabis regulatory frameworks such as prohibition have sparked interest in alternative solutions to reduce individual and societal harms. While it has been suggested that the recreational legalization process has yielded early successes, the relatively recent implementation of the novel policies has provided a modest time frame for a truly thorough establishment and assessment of key popula…
Open article record in new tab ↗Aims Evidence for case-control studies suggests that cannabis use is a risk factor for the development of psychosis. However, there have been limited prospective studies and the direction of this association remains controversial. The primary aim of the present study was to examine the association between cannabis use and the incidence of psychotic disorders in people at clinical high risk of psychosis. Secondary…
IntroductionPolicies to legalize possession and use of marijuana have been increasingly supported across the United States. Although there are restrictions on use in minors, many substance abuse scientists anticipate that these policy changes may alter use patterns among adolescents due to its wider availability and a softening of beliefs about its potentially harmful consequences. Despite the possibility that the…
Open article record in new tab ↗Objectives Increasing evidence implicates cannabis consumption as a key risk factor in the development of psychosis, but the mechanisms underpinning this relationship remain understudied. This study proposes to determine whether sleep disruption acts as a mediator of the cannabis-to-psychosis relationship. Study design This longitudinal study assessed measures of cannabis use frequency, sleep quality (SQ), and psy…
Open article record in new tab ↗BackgroundRecent well-powered genome-wide association studies have enhanced prediction of substance use outcomes via polygenic scores (PGSs). Here, we test (1) whether these scores contribute to prediction over-and-above family history, (2) the extent to which PGS prediction reflects inherited genetic variation v. demography (population stratification and assortative mating) and indirect genetic effects of parents…
Background Very little research has examined how perceptions of cannabis access among underage youth in Canada have changed since cannabis was legalized and since the onset of the COVID-19 pandemic. As such, this paper examines the effect of the early and ongoing stages of the COVID-19 pandemic period on youth perceptions of cannabis access over time since the onset of the Cannabis Act in 2018 in a large sample of…
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