science

MDMA-assisted psychotherapy

MDMA-assisted psychotherapy is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand MDMA-assisted psychotherapy rather than just read about it. In short: MDMA-assisted psychotherapy (MDMA-AT), also known as entactogen-assisted psychotherapy, is the use of prescribed doses of MDMA or sometimes other entactogens as an adjunct to psychotherapy sessions. MDMA-assisted psychotherapy is an effective treatment for post-traumatic stress disorder (PTSD), including complex PTSD (C-PTSD).

Key takeaways

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Reference excerpt

MDMA-assisted psychotherapy (MDMA-AT), also known as entactogen-assisted psychotherapy, is the use of prescribed doses of MDMA or sometimes other entactogens as an adjunct to psychotherapy sessions. MDMA-assisted psychotherapy is an effective treatment for post-traumatic stress disorder (PTSD), including complex PTSD (C-PTSD). Furthermore, it is currently under investigation as a treatment for various other mental health disorders, including major depressive disorder, social anxiety in people with autism, alcohol use disorder, and mood disturbances in individuals facing life-threatening illnesses. Other entactogens that have been used besides MDMA include MDA, MMDA, and methylone.

Therapeutic effects Post-traumatic stress disorder (PTSD) is most commonly treated by cognitive behavioral therapy (particularly prolonged exposure and cognitive processing therapy), eye movement desensitization and reprocessing (EMDR), and psychodynamic psychotherapy. However, over half of these patients continue to have PTSD after completing therapy, with results from war-related PTSD being especially poor. PTSD is best treated when a patient is in the 'optimal arousal zone', in which emotions are engaged, yet not overwhelming. In this zone, four symptom clusters of PTSD are sedated:

re-experiencing avoidance negative alterations in cognition/mood alterations in arousal and reactivity Subjects with PTSD exhibit extreme emotional numbing or anxiety and struggle to remain in the optimal arousal zone during conservative therapies. Threatening interpretations of memories are reinforced when patients are in low emotional states. If traumatic memories are revisited in therapy when a patient is not within the optimal arousal state, therapy for PTSD can actually increase the patient's trauma. When used in therapy, MDMA has been reported to increase empathy, closeness between patient and therapist, relaxation, motivation to engage with therapy and introspective thought, and reduce depression and anxiety. MDMA makes it easier for a patient to stay in the optimal arousal zone by decreasing feelings of anxiety and defensiveness when revisiting traumatic memories. By increasing feelings of closeness and empathy, it can improve the patient's trust in the therapist and encourage introspective thought to reassess memories and actions. Furthermore, research suggests that treatment may improve the quality of sleep of individuals affected by PTSD-related sleep disturbances. It is believed that these factors may increase the success rate of psychotherapy. Adverse effects, which can last from a few hours to several days, include diminished appetite, anxiety, headache, jaw tightness, tinnitus, nausea, asthenia (weakness), fatigue, sinusitis, nasopharyngitis, upper respiratory tract infection, disturbance in attention, tremor, tics, dysuria, erythema, and depression.

Research In 2017, a Phase II clinical trial led to a breakthrough therapy designation by the U.S. Food and Drug Administration (FDA). With that FDA approval, MDMA has been authorized for use in research related to psychotherapy. A large proportion of this research has been focused on treating PTSD and major depressive disorder. The research is controversial in part because recreational MDMA use has been associated with harmful effects among some users. A 2022 systematic review and meta-analysis found that MDMA-assisted psychotherapy reduced PTSD symptom severity compared to control conditions.

PTSD Multiple 2020 and 2021 systematic reviews found MDMA-assisted psychotherapy to be an effective treatment for PTSD, more than any other pharmacological-assisted psychotherapy. Published later in 2021, a phase III study indicated that MDMA-assisted therapy represents a potential breakthrough treatment for severe PTSD that merits expedited clinical evaluation. Based on this study, MDMA-assisted psychotherapy was granted breakthrough therapy designation by the FDA, a designation that indicates that there is preliminary evidence that an intervention might offer a substantial improvement over other options for a serious health condition. However, given the lack of blinding, several researchers have postulated that the results of the phase III trial might be heavily influenced by expectancy effects. There are no trials comparing MDMA-assisted psychotherapy to already existing first-line psychological treatments for PTSD which seems to attain similar or elevated symptom reduction compared with that due to MDMA-assisted psychotherapy based on indirect evidence.

Major depressive disorder There have been several studies that investigated MDMA-assisted psychotherapy as a potential treatment for major depressive disorder (MDD). An analysis of six phase II trials showed a trend toward significance, while a phase III trial reported that MDMA-assisted psychotherapy had antidepressant effects. Given that unprocessed trauma is considered a causative factor in some individuals with depression, it has been proposed that the benefit observed in PTSD trials might be applicable to MDD as well.

Other MDMA-assisted psychotherapy is currently under investigation as a treatment for various other mental health disorders, including social anxiety in people with autism, alcohol use disorder, and mood disturbances in individuals facing life-threatening illnesses. The research is controversial in part because recreational MDMA use has been associated with harmful effects among some users.

Mechanism of action

PTSD inhibits a subject's ability to respond appropriately to trauma-related stimuli. The current model of PTSD proposes that it results from amplified and uncontrolled responses from the amygdala to trauma-specific cues. Oxytocin, which is increased by MDMA, has been found to increase trust and emotional awareness and reduce amygdala responses as well as reduce coupling of the amygdala to brainstem regions associated with autonomic and behavioral characteristics of fear. It has been proposed that these effects foster memory reconsolidation by allowing the patient to access the traumatic memory while feeling detached from the sense of imminent threat. MDMA is believed to create neuroplasticity, which can help break habits associated with OCD and addiction.

History

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Illustrations

Worked examples

Example 1 — a first encounter with MDMA-assisted psychotherapy

Start with the simplest possible case. Write down what MDMA-assisted psychotherapy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to MDMA-assisted psychotherapy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about MDMA-assisted psychotherapy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of MDMA-assisted psychotherapy

In research: MDMA-assisted psychotherapy appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses MDMA-assisted psychotherapy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: MDMA-assisted psychotherapy is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fear memory modulators, MDMA, Psychedelic-assisted therapy, so understanding it makes those chapters shorter.
In everyday life: Look for MDMA-assisted psychotherapy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study MDMA-assisted psychotherapy in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what MDMA-assisted psychotherapy means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain MDMA-assisted psychotherapy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is MDMA-assisted psychotherapy in simple terms?

Why does MDMA-assisted psychotherapy matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study MDMA-assisted psychotherapy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on MDMA-assisted psychotherapy.