Drug and Alcohol Dependence
September 12, 2025
Matthijs Blankers, Ruben Van Beek, Desirée Spronk et al.
1 citation
There is a lack of understanding of the nature of the post-acute affective response in the days after ecstasy/3,4-Methylenedioxymethamphetamine (MDMA) use and whether this is associated with ecstasy/MDMA use or circumstantial factors. In the three days following ecstasy/MDMA use, we evaluated whether a drop in mental well-being is observed and can be related to ecstasy use. Data for this study...
European Addiction Research
2024
Ruben Johannes Jacob Van Beek, Matthijs Blankers, Marloes Kleinjan et al.
3 citations
Polydrug use patterns among young adults using ecstasy vary, as well as their willingness to change them. Polydrug use patterns are likely associated with different adverse health outcomes. It is unknown whether polydrug use patterns of young adults who use ecstasy are similar in different countries. This study aims to identify and compare polydrug use patterns and willingness to change them of...
International Journal of Environmental Research and Public Health
January 19, 2023
Koen Ponnet, Bert Hauspie, Nicky Dirkx et al.
21 citations
EDM event attendees are a high-risk population for substance use and associated adverse effects. The aim of this study was to examine substance use at EDM events, focusing on associations between attendance motives and substance use. Sociodemographic characteristics, event specifics, past-year use, and attendance motives were assessed through an online survey. Participants were 1345 Belgian EDM...
International Journal of Drug Policy
February 9, 2022
Meryem Grabski, Jon Waldron, Tom P. Freeman et al.
BACKGROUND Esketamine was licensed for use in treatment resistant depression by the European Medicines Agency in December 2019. It is unclear whether this new approval has lowered the risk perception of recreational ketamine use. This is important given a recent increase in recreational ketamine use. METHODS This study expanded on an existing longitudinal online study of the nightlife scene, by...
Frontiers in Psychiatry
March 27, 2018
Ruth Braidwood, Samantha Mansell, Jon Waldron et al.
7 citations
Research suggests that daily cannabis users have impaired memory for past events, but it is not clear whether they are also impaired in prospective memory (PM) for future events. The present study examined prospective memory in daily cannabis users who were either dependent (n = 18) or non-dependent (n = 18), and compared them with non-using controls (n = 18). The effect of future event...
Journal of Psychopharmacology
April 2016
Stephen J. Kaar, Jason Ferris, Jon Waldron et al.
In recent years the recreational use of inhaled nitrous oxide gas (N2O) is becoming increasingly popular, yet little is known about the characteristics of its users or the effects they experience. This paper presents original research from the 2014 Global Drug Survey (GDS) (n=74,864). GDS runs the largest survey of recreational drug use in the world. The findings confirm N2O as a very common...