More than 30 positive controlled outcome studies have been done on EMDR therapy. Some of the studies show that 84%-90% of single-trauma victims no longer have post-traumatic stress disorder after only three 90-minute sessions. Another study, funded by the HMO Kaiser Permanente, found that 100% of the single-trauma victims and 77% of multiple trauma victims no longer were diagnosed with PTSD after only six 50-minute sessions. In another study, 77% of combat veterans were free of PTSD in 12 sessions. There has been so much research on EMDR therapy that it is now recognized as an effective form of treatment for trauma and other disturbing experiences by organizations such as the American Psychiatric Association, the World Health Organization and the Department of Defense.
When a person’s mental health problems have their roots in a distressing life event, EMDR can be very effective very quickly. Studies have shown that EMDR can significantly decrease PTSD symptoms in just two or three sessions, and that the effect is long lasting (e.g. Ironson, Freund, Strauss, & Williams, 2002; Scheck, Schaeffer, & Gillette, 1998). People who have experienced several traumatic events, neglect or poor treatment as children usually need more sessions than this.
Multiple independent and controlled studies have shown that EMDR therapy is an effective treatment for PTSD. It’s even one of the Department of Veterans Affairs’ strongly recommended options to treat PTSD.
A 2012 study of 22 people found that EMDR therapy helped 77 percent of the individuals with psychotic disorder and PTSD. It found that their hallucinations, delusions, anxiety, and depression symptoms were significantly improved after treatment. The study also found that symptoms were not exacerbated during treatment.
An older studyTrusted Source that compared EMDR therapy to typical prolonged exposure therapy, found that EMDR therapy was more effective in treating symptoms. The study also found that EMDR therapy had a lower dropout rate from participants. Both, however, offered a reduction in the symptoms of traumatic stress, including both anxiety and depression.
Several small studies have also found evidence that EMDR therapy is not only effective in the short term, but that its effects can be maintained long term. One 2004 study evaluated people several months after they were given either “standard care” (SC) treatment for PTSD or EMDR therapy.
During and immediately after treatment, they noticed that EMDR was significantly more efficient in reducing symptoms of PTSD. During the three- and six-month follow-ups, they also recognized that participants maintained these benefits long after the treatment had ended. Overall, the study found that EMDR therapy gave people a longer-lasting reduction in symptoms than SC.
In regard to depression, one study of 32 peopleTrusted Source conducted in an inpatient setting found that EMDR therapy shows promise in treating the disorder. The study found that 68 percent of the people in the EMDR group showed full remission after treatment. The EMDR group also showed a stronger decrease in depressive symptoms overall. Because of the small sample size, more research is needed.