Published research studies on PTSD:

Brooks JS, Scarano T. Transcendental Meditation in the treatment of post-Vietnam adjustment. Journal of Counseling and Development 1985 64:212-215

Fergusson LC, Bonsheck AJ, Boudigues, JM, Personality and Health Characteristics of Cambodian Undergraduates: A Case for Student Development Journal of Instructional Psychology 1995 22:308-319

Rosenthal JZ, Grosswald S, Ross R, Rosenthal N. Effects of Transcendental Meditation in veterans of Operation Enduring Freedom and Operation Iraqi Freedom with posttraumatic stress disorder: a pilot study. Military Medicine 2011 176(6):626–630

Barnes VA, Rigg JL, Williams JJ. Clinical case series: treatment of PTSD with Transcendental Meditation in active duty military personnel. Military Medicine 2013 178(7):e836-40. doi:10.7205/MILMED-D-12-00426

Rees B, Travis F, Shapiro D, Chant R. Reduction in posttraumatic stress symptoms in Congolese refugees practicing Transcendental Meditation. Journal of Traumatic Stress 2013 26:295-298

Rees B, Travis F, Shapiro D, Chant R. Significant reductions in posttraumatic stress symptoms in Congolese refugees within 10 days of Transcendental Meditation practice. Journal of Traumatic Stress 2014 27(1):112–115

Yoshimura M, Kurokawa E, Noda T, Hineno K, Tanaka Y, Kawai Y, Dillbeck MC. Disaster relief for the Japanese earthquake-tsunami of 2011: stress reduction through the Transcendental Meditation® Technique. Psychological Reports: Mental & Physical Health 2015 117(1):1-11

Barnes VA, Monto A, Williams JJ, Rigg JL. Transcendental Meditation® and psychotropic medication use among active duty military service members with anxiety and PTSD. Military Medicine 2016 181(1):56-63. doi:10.7205/MILMED-D-14-00333

Nidich S, O’Connor T, Rutledge T, Duncan J, Compton B, Seng A, Nidich R. Reduced trauma symptoms and perceived stress in male prison inmates through the Transcendental Meditation Program: a randomized controlled trial. The Permanente Journal 2016 20(4):16-007. http://doi.org/10.7812/TPP/16-007

Elder C. Mind-body training for at-risk populations: preventive medicine at its best (editorial). The Permanente Journal 2017 21(1):16-174. doi.org/10.7812/TPP/16-174

Nidich S, Seng A, Compton B, O’Connor T, Salerno J W, Nidich R. Transcendental Meditation and reduced trauma symptoms in female inmates: a randomized controlled study. The Permanente Journal 2017 21(1):16-008. http://doi.org/10.7812/TPP/16-008 Transcendental Meditation and Reduced Trauma Symptoms in Female Inmates: A Randomized Controlled Study.

Barnes VA. Transcendental Meditation and treatment for post-traumatic stress disorder (Editorial comment). The Lancet Psychiatry 2018 5(12):946-947. http://doi.org/10.1016/S2215-0366(18)30423-1

Herron R, Rees B. The Transcendental Meditation Program’s impact on the symptoms of post-traumatic stress disorder of veterans: an uncontrolled pilot study. Military Medicine 2018 183(1-2):e144-e150. doi.org/10.1093/milmed/usx059

Kang SS, Erbes CR, Lamberty GJ, Thuras P, Sponheim SR, Polusny MA, Moran AC, Van Voorhis AC, Lim KO. Transcendental Meditation for veterans with post-traumatic stress disorder. Psychological Trauma: Theory, Research, Practice, and Policy 2018 10(6):675-680. doi.org/10.1037/tra0000346

Nidich S, Mills PJ, Rainforth M, Heppner P, Schneider RH, Rosenthal NE, Salerno J, Gaylord-King C, Rutledge T. Non-trauma-focused meditation versus exposure therapy in veterans with post-traumatic stress disorder a randomised controlled trial. The Lancet Psychiatry 2018 5(12):975-986. doi.org/10.1016/S2215-0366(18)30384-5