Fear is a fundamental emotion that protects us, but when it becomes chronic it can lead to disorders such as phobias and post-traumatic stress disorder (PTSD). Conventional treatments often show limited efficacy, prompting new approaches like MDMA-assisted psychotherapy. Research promoted by Multidisciplinary Association for Psychedelic Studies (MAPS) and led by figures such as Rick Doblin suggests that MDMA can reduce fear responses, enhance emotional processing, and strengthen the therapeutic alliance. These effects may allow patients to revisit traumatic memories with less avoidance, fostering recovery and improved quality of life.