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What Is Anxiety? — The Science, Symptoms, and Causes

Updated: Mar 22, 2023

What is anxiety? What causes it? What are its symptoms? How many people suffer? And why do some suffer more than others? Join D as he explores these core questions about the number one mental health problem in the world today — anxiety.

Video ID: EA009


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American Psychiatric Association (APA). Diagnostic and Statistical Manual of Mental Disorders 4th ed. text rev. (DSM-IV-TR). Washington, DC: American Psychiatric Association, 2000. — Foster, D E. Benzo Free: The World of Anti-Anxiety Drugs and the Reality of Withdrawal. Erie, Colorado: Denim Mountain Press, 2018. — Global Burden of Disease Collaborative Network. Global Burden of Disease Study 2017 (GBD 2017) Results. Seattle, United States: Institute for Health Metrics and Evaluation (IHME), 2018. — Leigh, Jennifer, “Five (5) Facts About Benzodiazepine Withdrawal (You Need to Know),”, August 16, 2015, accessed March 6, 2017, — Morgan, Charles A., Sheila Wang, Ann Rasmusson, Gary Hazlett, George Anderson and Dennis Charney. “Relationship Among Plasma Cortisol, Catecholamine, Neuropeptide Y, and Human Performance During Exposure to Uncontrollable Stress.” Abstract. Psychosomatic Medicine Vol. 63 Issue 3 (May-June 2001). 412-22. Accessed July 17, 2017. doi:10.1001/jamainternmed.2016.9225. — “Nervous System Brain: Amygdala,” is a derivative of “Nervous System: Brain (5)” by Servier Medical Art, which is licensed under CC 3.0 Unported. — Our World in Data. — Roy-Byrne PR and Wagner A: “Primary care perspectives on generalized anxiety disorder”. J Clin Psychiatry, 2004; 65(13):20–26. — Stossel, Scott. My Age of Anxiety: Fear, Hope, Dread, and the Search for Peace of Mind. New York: Vintage Books, 2013.


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