Monday mood decline after weekend ecstasy use: A retrospective analysis of daily diary reports.
Christopher Medina-Kirchner, Scott E Lukas
Drug and Alcohol Dependence Reports June 1, 2026 DOI: 10.1016/j.dadr.2026.100422 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Naturalistic study Peer reviewed |
|---|---|
| Sample size | 17 |
| Population | Weekend ecstasy users aged 19-38 |
| Duration | Observation weeks following both ecstasy-use and nonuse weekends |
| Topics | MDMA |
| Keywords | Daily diary Mood Naturalistic study |
| Key points | Monday mood was lower after ecstasy-use weekends, but this effect was attenuated when hours in bed were accounted for. |
Abstract
Ecstasy is commonly used on weekends and linked to post-use mood declines. Laboratory studies with pure MDMA rarely detect residual effects, whereas naturalistic studies more often report mood reductions. The timing and contextual drivers of these effects remain unclear. Data from seventeen participants reporting weekend ecstasy use (10 male, 7 female; 19-38 years) were drawn from a previously conducted study and analyzed for temporal mood changes not identified in the original report. Participants completed observation weeks following both ecstasy-use and nonuse weekends. Daily diaries assessed mood (0-10), other affective states, drug use, and sleep-related measures. Weekly BDI-II and BAI scores were collected. A significant Weekend Ecstasy X Day interaction was present (F(3,48) = 3.41, p = 0.037), driven by lower Monday mood after ecstasy-use weekends (t(16) = 2.36, p = 0.031). This effect remained after adjusting for other drug use (β = -1.44, p = 0.018), but was attenuated when hours in bed were included (β = -0.82, p = 0.17), which independently predicted lower mood (β = -0.29, p = 0.019). Mediation analyses indicated that increased time in bed largely accounted for the Monday decrease. No differences were found for the BDI-II and BAI. Exploratory analyses showed reduced Thursday physical tension/agitation after ecstasy-use weekends (p = 0.008). Residual mood effects appear Monday-specific and are attenuated when inactivity is considered, suggesting recovery-related behavior-not MDMA alone-may underlie post-use mood declines. Because increased time in bed may both reflect and influence low mood, directionality cannot be determined.
Comparable studies
Other observational and cohort studies on MDMA, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Subjective Reports of the Effects of MDMA in a Clinical Setting Individuals who took MDMA in a clinical setting | 1986 | Observational study | |
| Memory impairment in abstinent MDMA ("Ecstasy") users Abstinent MDMA users | 1998 | Observational cohort | |
| Impaired cognitive performance in drug free users of recreational ecstasy (MDMA) Otherwise healthy young people | 2000 | Observational | |
| The Psychological and Physiological Effects of MDMA on Normal Volunteers Older, more educated, drug-experienced individuals | 1986 | Observational cohort | |
| Cognitive performance in recreational users of MDMA or 'ecstasy': evidence for memory deficits Young people who were regular or novice MDMA users, or non-users | 1998 | Observational cohort | n = 30 |
Citations in the library
Cites 17
- Gender differences in the subjective effects of MDMA Psychopharmacology March 5, 2001
- Human psychobiology of MDMA or ‘Ecstasy’: an overview of 25 years of empirical research Human Psychopharmacology: Clinical and Experimental July 1, 2013
- Acute, sub‐acute and long‐term subjective consequences of ‘ecstasy’ (MDMA) consumption in 430 regular users Human Psychopharmacology: Clinical and Experimental October 1, 2003
- A direct comparison of the behavioral and physiological effects of methamphetamine and 3,4-methylenedioxymethamphetamine (MDMA) in humans Psychopharmacology June 30, 2011
- Sub-acute effects of MDMA (±3,4-methylenedioxymethamphetamine, "ecstasy") on mood: evidence of gender differences Psychopharmacology April 1, 2002
and 12 more in the library