1. John F. Helliwell, Richard Layard and Jeffrey D. Sachs.  “World Happiness Report.”  2019
2. John F. Helliwell, Richard Layard, Jeffrey D. Sachs, and Jan Emmanuel De Neve.  “World Happiness Report.”  2020
3. John F. Helliwell, Haifang Huang, Shun Wang and Max Norton.  “World Happiness Report.”  2021

4. Nirmita Panchal, Rabah Kamal, Kendal Orgera, Cynthia Cox, Rachel Garfield, Liz Hamel, Cailey Muñana and Priya Chidambaram.  “The Implications of COVID-19 for Mental Health and Substance Use.”  Henry J. Kaiser Family Foundation.  21 Aug 2020
5. “Stress in the Time of COVID-19.”  American Psychological Association.  June 2020
6. “Stress in America 2020” American Psychological Association.
7. “National College Health Assessment.”  American College Health Association.  Spring 2019
8. Paige Winfield Cunningham.  “The Health 202:  Texts to Federal Government Mental Health Hotline Up roughly 1,000.”  Washington Post. 
9. “Historic Shift in American’s Happiness Amid Pandemic.”  NORC, University of Chicago.  June 2020
10. “America’s Health Rankings:  2018 Annual Report.”  United Health Foundation.
11. “America’s Health Rankings:  2019 Annual Report.”  United Health Foundation.
12. United States.  Centers for Disease Control and Prevention.  “Leading Causes of Death Reports, 1981 - 2017.”  1 Aug 2019
13. United States.  Centers for Disease Control and Prevention. “Preventing Suicide.”  16 Nov 2020
14. “Anxiety Disorders.”  National Alliance on Mental Illness.  2 Nov 2023
15. “Global Emotions Report.”  Gallup.  2019

16. “Stress in America 2023: A Nation Recovering from Collective Trauma.” American Psychological Association.

17. Kevin B. Smith. “Politics is Making Us Sick: The Negative Impact of Political Engagement on Public Health During the Trump Administration.” Department of Political Scient, University of Nebraska-Lincoln. 14 Jan 2022

18. “WSJ/NORC Poll March 2023.” NORC at the University of Chicago and the Wall Street Journal. March 2023

19. Lunna Lopes, Ashley Kirzinger, Grace Sparks, Mellisha Stokes and Mollyann Brodie. “KFF/CNN Mental Health In America Survey.” KFF. 6 Oct 2022

20. Kevin B. Smith, Matthew V. Hibbing, and John R. Hibbing.  “Friends, Relatives, Sanity, and Health: The Costs of Politics.”  25 Sept 2019