https://theconversation.com/can-a-psychedelic-induced-mystical-experience-really-improve-your-mental-health-274330; https://akjournals.com/view/journals/2054/7/1/article-p18.xml (full text); https://psychology-tools.com/test/meq-30. "Correlation does not equal #causation. A large body of #psychiatric #research warns against assuming that because 2 things occur together, 1 must cause the other. Mystical experiences may simply be 1 visible marker of other processes, such as increased emotional openness, the development of new neural connections or changes in entrenched beliefs."