Auteur T. P. FREEMAN

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Are reasons for first using cannabis associated with subsequent cannabis consumption (standard THC units) and psychopathology?

E. SPINAZZOLA ; H. DEGEN ; I. AUSTIN-ZIMMERMAN ; G. TROTTA ; E. CHESNEY ; Z. LI ; L. ALAMEDA ; B. M. LEUNG ; Y. LANG ; A. QUATTRONE ; D. QUATTRONE ; E. CASTRIGNANO ; K. WOLFF ; R. MURRAY ; T. P. FREEMAN ; M. DI FORTI | 2025
Dans BMJ Mental Health (Vol.28, n°1, January 2025) Article : Périodique

BACKGROUND: Reasons for first using cannabis (RFUC) may influence later use patterns and mental health outcomes. However, limited research has explored self-medication versus social RFUCs in depth, and their associations with cannabis use patter[...]

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Association of cannabis potency with mental ill health and addiction: A systematic review

K. PETRILLI ; S. OFORI ; L. HINES ; G. TAYLOR ; S. ADAMS ; T. P. FREEMAN | 2022
Dans Lancet Psychiatry (The) (Vol.9, n°9, September 2022) Article : Périodique

Cannabis potency, defined as the concentration of Delta9-tetrahydrocannabinol (THC), has increased internationally, which could increase the risk of adverse health outcomes for cannabis users. We present, to our knowledge, the first systematic r[...]

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Associations between cigarette smoking and cannabis dependence: A longitudinal study of young cannabis users in the United Kingdom

C. HINDOCHA ; N. D. C. SHABAN ; T. P. FREEMAN ; R. K. DAS ; G. GALE ; G. SCHAFER ; C. J. FALCONER ; C. J. A. MORGAN ; H. V. CURRAN | 2015
Dans Drug and Alcohol Dependence (Vol.148, March 2015) Article : Périodique

Aims: To determine the degree to which cigarette smoking predicts levels of cannabis dependence above and beyond cannabis use itself, concurrently and in an exploratory four-year follow-up, and to investigate whether cigarette smoking mediates t[...]

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Cannabis, cannabinoids and health: a review of evidence on risks and medical benefits

E. HOCH ; N. D. VOLKOW ; C. M. FRIEMEL ; V. LORENZETTI ; T. P. FREEMAN ; W. HALL | 2025
Dans European Archives of Psychiatry and Clinical Neuroscience (Vol.275, n°2, March 2025) Article : Périodique

The legalization of cannabis for medical and recreational purposes has progressed internationally. Cannabis and cannabinoids are advocated for a plethora of medical indications. An increasing number of medical and nonmedical users regularly cons[...]

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Cannabis research in context: The case for measuring and embracing regional similarities and differences [Editorial]

J. COUSIJN ; L. KUHNS ; F. FILBEY ; T. P. FREEMAN ; E. KROON | 2024
Dans Addiction (Vol.119, n°9, September 2024) Article : Périodique

Considerable differences in the types of cannabis products, methods of use, social norms and cultures and legal climates surrounding use exist among regions, resulting in distinct cannabis use contexts. Research examining and accounting for thes[...]

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Changes in delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) concentrations in cannabis over time: systematic review and meta-analysis

T. P. FREEMAN ; S. CRAFT ; J. WILSON ; S. STYLIANOU ; M. ELSOHLY ; M. DI FORTI ; M. T. LYNSKEY | 2021
Dans Addiction (Vol.116, n°5, May 2021) Article : Périodique

BACKGROUND AND AIMS: Cannabis products with high delta-9-tetrahydrocannabinol (THC) concentrations carry an increased risk of addiction and mental health disorders, while it has been suggested that cannabidiol (CBD) may moderate the effects of T[...]

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Changes in the composition of cannabis from 2000-2017 in Denmark: Analysis of confiscated samples of cannabis resin

K. R. THOMSEN ; C. LINDHOLST ; B. THYLSTRUP ; S. KVAMME ; L. A. REITZEL ; M. WORM-LEONHARD ; A. ENGLUND ; T. P. FREEMAN ; M. HESSE | 2019
Dans Experimental and Clinical Psychopharmacology (Vol.27, n°4, August 2019) Article : Périodique

Globally, recent studies report increases in Delta-9-tetrahydrocannabinol (THC) concentration in seized samples of cannabis for human consumption. This is important, because use of cannabis with a high concentration of THC has been linked to a n[...]

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Cognitive and subjective effects of mephedrone and factors influencing use of a 'new legal high'

T. P. FREEMAN ; C. J. A. MORGAN ; J. VAUGHN-JONES ; N. HUSSAIN ; K. KARIMI ; H. V. CURRAN | 2012
Dans Addiction (Vol.107, n°4, April 2012) Article : Périodique

Aims - Use of the stimulant drug mephedrone increased dramatically in 2009, and it is still available in the United Kingdom after being controlled in April 2010. This study aimed to assess mephedrone's acute cognitive and subjective effects. De[...]

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Controlling new drugs under marketing regulations [For debate]

B. HUGHES, Auteur ; A. R. WINSTOCK, Auteur ; K. KRAJEWSKI, Auteur du commentaire ; J. SHERIDAN, Auteur du commentaire ; B. ATMORE, Auteur du commentaire ; B. RUSSELL, Auteur du commentaire ; P. REUTER, Auteur du commentaire ; T. P. FREEMAN, Auteur du commentaire ; H. V. CURRAN, Auteur du commentaire | 2012
Dans Addiction (Vol.107, n°11, November 2012) Article : Périodique

Aims: The rapid emergence of myriad substances openly marketed as ‘legal highs’ is straining traditional drug control systems which require time and basic scientific data on harms to react, presenting governments with the dilemma of no response [...]

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Detection and quantification of synthetic cannabinoids in seven illicitly sourced disposable vapes submitted by an individual presenting to a UK drug and alcohol service

S. CRAFT ; P. SUNDERLAND ; M. F. MILLEA ; C. R. PUDNEY ; O. B. SUTCLIFFE ; T. P. FREEMAN | 2025
Dans Addiction (Vol.120, n°3, March 2025) Article : Périodique

BACKGROUND AND AIMS: In the United Kingdom and internationally, synthetic cannabinoids (SCs) are a common adulterant in illicitly sourced vaping products. Recently, their use is increasingly being linked to severe health effects, particularly am[...]

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Drug use changes at the individual level: Results from a longitudinal, multisite survey in young Europeans frequenting the nightlife scene

M. GRABSKI ; J. WALDRON ; T. P. FREEMAN ; C. MOKRYSZ ; R. J. J. VAN BEEK ; P. VAN DER POL ; B. HAUSPIE ; N. DIRKX ; J. SCHROOTEN ; T. H. ELGAN ; K. FELTMAN ; E. BENEDETTI ; G. SCALIA TOMBA ; F. FABI ; S. MOLINARO ; J. GRIPENBERG ; T. VAN HAVERE ; M. VAN LAAR ; H. V. CURRAN | 2022
Dans European Addiction Research (Vol.28, n°2, March 2022) Article : Périodique

BACKGROUND: Monitoring emerging trends in the increasingly dynamic European drug market is vital; however, information on change at the individual level is scarce. In the current study, we investigated changes in drug use over 12 months in Europ[...]

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Effectiveness and safety of psychosocial interventions for the treatment of cannabis use disorder: A systematic review and meta-analysis

M. HALICKA ; T. L. PARKHOUSE ; K. WEBSTER ; F. SPIGA ; L. A. HINES ; T. P. FREEMAN ; S. SANGHERA ; S. DAWSON ; C. PATERSON ; J. SAVOVIC ; J. P. T. HIGGINS ; D. M. CALDWELL | 2025
Dans Addiction (Vol.120, n°11, November 2025) Article : Périodique

AIM: To evaluate the effectiveness, safety and cost-effectiveness of psychosocial interventions for cannabis use disorder (CUD). METHODS: A systematic review of randomized controlled trials (RCTs; PROSPERO protocol CRD42024553382) of psychosoci[...]

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Enhanced cannabis timeline followback (EC-TLFB): Comprehensive assessment of cannabis use including standard THC units and validation through biological measures

K. PETRILLI ; W. LAWN ; R. LEES ; C. MOKRYSZ ; A. BORISSOVA ; S. OFORI ; K. TRINCI ; R. DOS SANTOS ; H. LEITCH ; S. SONI ; L. A. HINES ; V. LORENZETTI ; H. V. CURRAN ; T. P. FREEMAN | 2024
Dans Addiction (Vol.119, n°4, April 2024) Article : Périodique

AIMS: The aims of this study were to present an enhanced cannabis timeline followback (EC-TLFB) enabling comprehensive assessment of cannabis use measures, including standard tetrahydrocannabinol (THC) units, and to validate these against object[...]

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Examining the profile of high-potency cannabis and its association with severity of cannabis dependence

T. P. FREEMAN ; A. R. WINSTOCK | 2015
Dans Psychological Medicine (Vol.45, n°15, November 2015) Article : Périodique

Background. Cannabis use is decreasing in England and Wales, while demand for cannabis treatment in addiction services continues to rise. This could be partly due to an increased availability of high-potency cannabis. Method. Adults residing in[...]

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Factors associated with drug use in prison: A systematic review of quantitative and qualitative evidence

A. AUSTIN ; L. FAVRIL ; S. CRAFT ; P. THLIVERI ; T. P. FREEMAN | 2023
Dans International Journal of Drug Policy (Vol.122, December 2023) Article : Périodique

Background: About a third of people use drugs during their incarceration, which is associated with multiple adverse health and criminal justice outcomes. Many studies have examined factors associated with in-prison drug use, but this evidence ha[...]

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