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Joanna Cohen, PhD

  • Bloomberg Professor of Disease Prevention
  • Professor

Departmental Affiliations

Center & Institute Affiliations

Contact Information

2213 McElderry Street
4th Floor
Baltimore, Maryland 21205

(1) 410-614-1003

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PhD, University of North Carolina at Chapel Hill, 1999
MHSc, University of Toronto, 1992


Joanna Cohen is the Bloomberg Professor of Disease Prevention and the Director of the Institute for Global Tobacco Control at the Johns Hopkins Bloomberg School of Public Health. She also holds an appointment in the Dalla Lana School of Public Health at the University of Toronto.

Dr. Cohen obtained her PhD in Health Policy and Administration from the University of North Carolina - Chapel Hill and her MHSc in Community Health and Epidemiology from the University of Toronto. She has been involved in tobacco policy research for over 20 years.

Trained in epidemiology and health policy, her research interests focus on the factors that affect the adoption and implementation of public health policies and on evaluating the beneficial effects and the unintended consequences of such policies. She has worked on studies of both US and Canadian legislators regarding tobacco and tobacco control policy, a longitudinal cohort of smokers focusing on factors influencing quitting behavior, tobacco promotion at the point of sale, tobacco prices including taxes, tobacco packaging, options for reducing the physical availability of tobacco products, and tobacco industry interference in tobacco control.

Dr. Cohen has been recognized for her teaching and mentoring, and has co-led a 6-year training program in public health policy.

She is a Senior Editor of Tobacco Control and was recently a voting member of the US Food and Drug Administration's Tobacco Product Scientific Advisory Committee.

Honors and Awards

2004 - Robin Badgley Award (Teaching, Early Career Category), Department of Public Health Sciences, University of Toronto
2003 - Field Preceptor Award, Department of Public Health Sciences, University of Toronto
2000 - “Mentor of the Year” Award, conferred by the National Mentoring Program of the American Public Health Association

  • Tobacco control, public health policy, tobacco industry, policy evaluation, ethics
  • Cohen JE, Yang J, Donaldson EA.  Impact of the Removal of Light and Mild Descriptors from Cigarette Packages in Ontario, Canada: Switching to "Light Replacement" Brand Variants.  Preventive Medicine (in press).

  • Mead EL, Rimal RN, Ferrence R, Cohen JE.  Understanding the Sources of Normative Influence on Behavior: The Example of Tobacco. Social Science & Medicine (in press). 

  • Ayers JW, Althouse BM, Johnson M, Dredze M, Cohen JE. What's the Healthiest Day?: Circaseptan (Weekly) Rhythms in Healthy Considerations. American Journal of Preventive Medicine. 2014 Apr 16. pii: S0749-3797(14)00099-3. doi: 10.1016/j.amepre.2014.02.003. [Epub ahead of print] 

  • Asma S, Song Y, Cohen J, Eriksen M, Pechacek T, Cohen N, Iskander J.  CDC Grand Rounds: Global Tobacco Control.  Morbidity and Mortality Weekly Report (MMWR) 2014; 63(13):277-80.

  • *Zhang B, Cohen JE, Bondy SJ, Selby P. Use Duration of Nicotine Replacement Therapy and Smoking Cessation: A Population-based Longitudinal Study.  American Journal of Epidemiology (in press).

  • Bloomberg Initiative to Reduce Tobacco Use
  • Harvesting global learning on electronic nicotine delivery systems to inform