TIRCIA · EMDR
EMDR and post-traumatic stress: what the studies really say in 2026
Meta-analyses, guidelines, controversies: an overview for practitioners
By Marie-Agnès Thulliez · Author · Publishing Director13-minute read
Should EMDR be offered as a first-line treatment to a patient with post-traumatic stress disorder? Since 2023, several large meta-analyses have been published, the American Psychological Association has revised its recommendation, and the debate has been rekindled. Here is what the studies actually show, with their strengths and limitations, and what this means for practice.
In brief
- Compared with no treatment, EMDR clearly reduces PTSD symptoms. The finding is consistent, although the certainty of the evidence remains low.
- Compared with other trauma-focused psychotherapies, no difference in effectiveness has been demonstrated: EMDR does equally well.
- All international guidelines include it; the APA (2025) places it at the second level, which is a matter of debate.
- The specific role of eye movements is still discussed.
- Adverse effects are rarely measured, in EMDR as in most trauma psychotherapies.
1. Why take stock again in 2026?
For years, one sentence summed up the state of knowledge: EMDR is “as effective as trauma-focused CBT”. That sentence still holds, and it deserves to be made more precise. Three developments have renewed the topic: a series of large meta-analyses between 2023 and 2026, an individual participant data meta-analysis directly comparing EMDR with other treatments, and the update of the APA guideline (2025), which keeps EMDR at the second level, as in its 2017 version.
For practitioners, the issue is concrete: knowing how to present EMDR honestly to a patient, giving it its fair weight, neither more nor less. For a general introduction to the method, see our article EMDR in brief.
2. The guidelines: a consensus, with one exception
| Institution | Place of EMDR in adult PTSD |
|---|---|
| WHO (2023) | Among the recommended psychotherapies, on the same footing as trauma-focused CBT. Conditional recommendation, moderate-quality evidence. |
| NICE (2018) | To be offered for PTSD related to non-combat trauma, beyond 3 months; to be considered between 1 and 3 months if the patient prefers it. |
| ISTSS (2019) | Strong recommendation, alongside cognitive processing therapy (CPT), cognitive therapy, prolonged exposure and trauma-focused CBT. |
| VA/DoD (2023) | One of the three psychotherapies strongly recommended, together with CPT and prolonged exposure. |
| APA (2025) | Second level (“suggested”). The first level goes to CPT, prolonged exposure and trauma-focused CBT. |
| HAS, France (2007) | Mentioned alongside CBT among the psychotherapies for PTSD, in a guide that has not been updated since. |
Two clarifications are needed. The ISTSS committee brought together specialists from several approaches, including Francine Shapiro, who created EMDR (Bisson et al., 2019). The French recommendation from the HAS (Haute Autorité de santé, France’s National Authority for Health), on the other hand, dates back nearly twenty years: it still mentioned a contraindication in the case of psychotic disorder, which more recent trials have called into question (van den Berg et al., 2015).
3. Compared with no treatment: a clear effect, fragile evidence
The most recent meta-analysis on this question brings together 12 randomised trials and 690 participants, comparing EMDR with a waiting list (Villegas-Ortega et al., 2026). The results at the end of treatment are clear:
- Symptoms: a large reduction (standardised mean difference of −1.19), partly maintained at follow-up (−0.88).
- Diagnosis: treated patients are about twice as likely to no longer meet PTSD criteria (risk ratio of 2.13).
- Certainty: low to very low, owing to the size of the studies, the lack of blinding and group allocation that was sometimes poorly concealed.
- What is missing: none of the included studies measured quality of life, treatment acceptability or adverse effects.
This paradox is shared by many approaches. The Cochrane review of psychotherapies for chronic PTSD already rated the quality of the evidence as low for all approaches, including CBT (Bisson et al., 2013). A large, repeated effect measured in imperfect studies: this is the situation of most trauma psychotherapies.
4. Compared with other psychotherapies: equivalence
This is the question clinicians care about most. Three recent studies address it.
- The largest network meta-analysis (157 trials, 11,565 patients) confirms that the psychotherapies evaluated, including EMDR, are effective compared with control groups. However, 64% of the trials concerned trauma-focused CBT, so the data on EMDR are far fewer (Hoppen et al., 2023).
- An individual participant data meta-analysis, which re-analyses the data of each patient, directly compares EMDR with other treatments. It finds no difference in symptom severity, response, remission or dropout. It covers, however, only 8 trials and 346 patients out of 15 eligible trials (Wright et al., 2024).
- A review of 16 trials (1,031 participants) finds EMDR superior to a waiting list and equivalent to trauma-focused CBT, with treatments that were on average shorter. Almost all studies had a moderate or high risk of bias. This review was funded by EMDR Association UK (Simpson et al., 2025).
The conclusion is robust: EMDR is on a par with the other trauma-focused psychotherapies. Claiming that it does better, or that it is markedly faster, goes beyond what the data allow.
The individual data analysis also yields two signals worth checking: men discontinued EMDR more often than women, and unemployed patients retained higher scores at the end of treatment (Wright et al., 2024). These are leads still to be confirmed.
5. And in the long term?
A review of 55 meta-analyses concludes that, among psychotherapies for PTSD, only trauma-focused CBT and EMDR have shown benefits beyond one month after the end of treatment, mainly in the medium term for EMDR (Kip et al., 2025). The authors stress, however, that the quality of these meta-analyses varies widely and that they often draw on the same trials. The maintenance of effects over several years remains poorly documented, for EMDR as for other approaches.
6. The APA’s different position
In 2025, the APA kept EMDR at the second level (conditional recommendation, as in 2017), behind CPT, prolonged exposure and trauma-focused CBT. Researchers involved in EMDR responded that this position makes the APA an exception among recent guidelines, that it relies on older reviews and lower-quality meta-analyses, and that it lacks transparency about its choices (Lee et al., 2026).
How should this debate be read? It concerns ranking, and leaves effectiveness untouched: everyone agrees that EMDR is a validated treatment for PTSD. It depends above all on how one weighs numerous but imperfect studies. It is useful to know that the authors of the critique practise and teach EMDR; in this field, many experts are also involved in the methods they study.
7. Are eye movements essential?
A 2013 meta-analysis compared EMDR with and without eye movements: in 15 clinical trials, eye movements provided a moderate additional effect; in 11 laboratory studies, a large one (Lee and Cuijpers, 2013). The first author is an EMDR researcher.
A more recent meta-analysis, limited to laboratory studies (15 studies, 942 participants), shows that eye movements and other dual tasks, such as counting, reduce the vividness and emotionality of distressing memories to a comparable degree; eye movements have only a slight advantage on vividness (Houben et al., 2020). The authors point out that these results, obtained in volunteers, cannot be transferred directly to clinical settings.
In practice, a task that genuinely engages attention seems to matter more than the precise form of stimulation. This is the working memory hypothesis, discussed in detail in our article Working memory theory: why eye movements soothe a memory.
8. Blind spots in the research
- Weak control groups: a large share of the large effects comes from comparisons with a waiting list, which mechanically widen the gap.
- Blinding is impossible: patient and therapist know which treatment is being given, which may influence the results.
- Small samples: many trials involve a few dozen patients.
- Adverse effects: they are rarely measured systematically. This reflects a lack of data, which in itself says nothing about harm.
- Researcher allegiance: a substantial proportion of studies is conducted by teams who practise or teach the method being evaluated, in EMDR as in the other approaches.
9. What this means for practice
- Present EMDR as a validated option, equal in effectiveness to the other trauma-focused psychotherapies, and keep promises of speed or superiority out of the conversation.
- Take the patient’s preference into account: with comparable effectiveness, it is part of the choice, as NICE recommends.
- Apply the full protocol: trials evaluate EMDR in eight phases, as a whole, rather than series of isolated stimulations.
- Measure progress with a standardised questionnaire at the start, during and at the end of treatment.
- Stay alert to dropouts and to difficult reactions between sessions, and talk about them with the patient.
Clinical vignette
Fictional case, built from common clinical situations.
Mathieu, 45, has suffered from post-traumatic stress since the fire at his warehouse a year ago. He read online that EMDR “cures in three sessions”, then that a large American association no longer recommends it. He asks his psychologist: “So, does it work or not?”
She explains that EMDR is a recognised treatment for PTSD, as effective as the other trauma-focused therapies, and that the debate concerns its rank in one guideline, while its effectiveness is not in question. She makes clear that no serious study allows a promise of three sessions, and presents him with the two possible options. Mathieu chooses EMDR, because he would rather not have to recount the fire in detail at every session.
They agree to complete a symptom questionnaire every four sessions. After two months, the score has dropped markedly; the nightmares are still present and become the next target.
What is established, and what is not
- Established: EMDR reduces PTSD symptoms compared with no treatment, and features in all the major international guidelines.
- Well supported: its effectiveness is equivalent to that of the other trauma-focused psychotherapies.
- Well supported, to be confirmed: benefits that are maintained beyond the end of treatment.
- Debated: its rank among first-line treatments, and the specific role of eye movements.
- Insufficiently evaluated: adverse effects, quality of life, and effectiveness in certain groups, such as active-duty military personnel.
Frequently asked questions
Is EMDR faster than CBT?
Some studies report shorter treatments, but direct comparisons show no difference in effectiveness, and data on duration remain limited. It is best kept out of the argument.
Why does the APA place it at the second level?
Because it judged the evidence for EMDR to be less robust or more variable on certain criteria. This assessment is contested, and the other major recent guidelines include EMDR among the treatments of choice.
Are eye movements necessary, or is tapping enough?
Eye movements remain the best-studied form of stimulation. Tapping or alternating sounds are alternatives when eye movements are not possible, although they have been less thoroughly evaluated.
What should I say to a patient who has read conflicting opinions?
That EMDR is a recognised treatment for PTSD, comparable in effectiveness to the other trauma-focused therapies, and that the choice between them can take their preferences into account.
In one sentence
EMDR is a validated treatment for post-traumatic stress, on a par in effectiveness with the other trauma-focused therapies.
The studies are numerous and consistent, though often imperfect: this is what fuels the debate about its ranking, while its effectiveness itself is not in doubt.
References
- Bisson, J. I., Berliner, L., Cloitre, M., et al. (2019). The International Society for Traumatic Stress Studies new guidelines for the prevention and treatment of posttraumatic stress disorder: Methodology and development process. Journal of Traumatic Stress, 32(4), 475-483. Link
- Bisson, J. I., Roberts, N. P., Andrew, M., Cooper, R., & Lewis, C. (2013). Psychological therapies for chronic post-traumatic stress disorder (PTSD) in adults. Cochrane Database of Systematic Reviews, CD003388. Link
- Haute Autorité de santé (2007). Affections psychiatriques de longue durée : troubles anxieux graves [Long-term psychiatric conditions: severe anxiety disorders] (ALD 23 guide). Link
- Hoppen, T. H., Jehn, M., Holling, H., et al. (2023). The efficacy and acceptability of psychological interventions for adult PTSD: A network and pairwise meta-analysis of randomized controlled trials. Journal of Consulting and Clinical Psychology, 91(8), 445-461. Link
- Houben, S. T. L., Otgaar, H., Roelofs, J., Merckelbach, H., & Muris, P. (2020). The effects of eye movements and alternative dual tasks on the vividness and emotionality of negative autobiographical memories: A meta-analysis of laboratory studies. Journal of Experimental Psychopathology, 11(1). Link
- Kip, A., Ritter, L., Hoppen, T. H., et al. (2025). Psychological interventions for adult posttraumatic stress disorder: A systematic review of published meta-analyses. Journal of Anxiety Disorders, 112, 103017. Link
- Lee, C. W., & Cuijpers, P. (2013). A meta-analysis of the contribution of eye movements in processing emotional memories. Journal of Behavior Therapy and Experimental Psychiatry, 44(2), 231-239. Link
- Lee, C. W., de Jongh, A., Farrell, D., et al. (2026). A critique of the 2025 American Psychological Association clinical practice guideline for the treatment of posttraumatic stress disorder in adults: Underrating EMDR effectiveness. Journal of EMDR Practice and Research, 20, 0034. Link
- National Institute for Health and Care Excellence (2018). Post-traumatic stress disorder (NG116). Link
- World Health Organization (2023). mhGAP Evidence Centre: PTSD, psychological interventions (adults). Link
- Pappas, S. (2025). New guidelines for treating PTSD and trauma. Monitor on Psychology, July-August 2025. American Psychological Association. Link
- Schnurr, P. P., Hamblen, J. L., Wolf, J., et al. (2024). The management of posttraumatic stress disorder and acute stress disorder: Synopsis of the 2023 U.S. Department of Veterans Affairs and U.S. Department of Defense clinical practice guideline. Annals of Internal Medicine, 177(3), 363-374. Link
- Simpson, E., Carroll, C., Sutton, A., et al. (2025). Clinical and cost-effectiveness of eye movement desensitization and reprocessing for treatment and prevention of post-traumatic stress disorder in adults: A systematic review and meta-analysis. British Journal of Psychology, 116(4), 1128-1149. Link
- van den Berg, D. P. G., de Bont, P. A. J. M., van der Vleugel, B. M., et al. (2015). Prolonged exposure vs eye movement desensitization and reprocessing vs waiting list for posttraumatic stress disorder in patients with a psychotic disorder: A randomized clinical trial. JAMA Psychiatry, 72(3), 259-267. Link
- Villegas-Ortega, J., Galvez-Arevalo, R., Castilla-Encinas, A. M., et al. (2026). Effects of EMDR vs. waiting list for adults with post-traumatic stress disorder: A systematic review and meta-analysis of randomized controlled trials. Journal of Affective Disorders, 392, 120134. Link
- Wright, S. L., Karyotaki, E., Cuijpers, P., et al. (2024). EMDR v. other psychological therapies for PTSD: A systematic review and individual participant data meta-analysis. Psychological Medicine, 54(8), 1580-1588. Link
This article summarises the scientific evidence available at the date of publication. It is no substitute for clinical training, supervision, or the advice of a health professional.
