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Keeve E. Nachman, PhD

  • Associate Professor

Departmental Affiliations

Center & Institute Affiliations

Contact Information

615 N. Wolfe Street
Room W7007
Baltimore, Maryland 21205


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PhD, Johns Hopkins Bloomberg School of Public Health, 2006
MHS, Johns Hopkins Bloomberg School of Public Health, 2001


I am interested in the interface between science and policy, and the application of a multidisciplinary lens to solve public health and environmental problems associated with the food system.  My research aims to generate the scientific evidence needed to support decisions that mitigate human exposures to chemical and microbial hazards associated with food production.  In addition, I am committed to ensuring that the findings of my research are presented to legislative and regulatory policymakers, public health practitioners and members of the general public in a form that is accessible and useful.

My involvement in the field of public health and the risk sciences spans more than ten years, and includes experiences working in two federal agencies on issues related to toxicology and chemical risk assessment.  My research of food system issues (including antibiotic misuse and arsenic-based drugs) uses a multidisciplinary approach to identify and characterize public health risks that can be addressed through modifications to production practices.

I have published in high-profile publications documenting public health risks stemming from veterinary drug use in industrial food animal production.  My work has been highlighted by national television, radio, print and internet media outlets, including ABC, CNN, CBS Radio, Comedy Central, NPR, the New York Times, the Washington Post, USA Today, the Guardian, the Baltimore Sun, and the San Francisco Chronicle.  My research has twice been covered/parodied on the Colbert Report with Stephen Colbert, illustrating its spread into the public consciousness.

My research interests include: the public health and environmental consequences of industrial food animal and crop production; chemical and microbial food safety; risk assessment and communication; regulatory approaches to synthesis of scientific evidence in decision-making; and transparency in federal rulemaking.

Honors and Awards

Excellence in Baltimore Public Health Practice, Johns Hopkins Office of Public Health Practice and Training, April 2019

Lipitz Public Health Policy Award, May 2018

EPA “S” Award, July 2008 (Spatial Databases Linking Project)

EPA “S” Award, July 2008 (Probabilistic Risk Activities)

EPA “S” Award, July 2007 (Probabilistic Risk and Risk Portal Activities)

Delta Omega Public Health Honor Society, May 2007

Center for a Livable Future Doctoral Fellowship, July 2005

Center for a Livable Future Doctoral Fellowship, July 2004

Health Policy and Management Departmental Scholarship, September 2002

Risk Sciences and Public Policy Institute Certificate, May 2001

  • arsenic
  • food systems
  • risk science
  • risk assessment
  • diet
  • climate change
  • environmental epidemiology
  • systematic review
  • industrial food animal production
  • animal waste
  • animal feed
  • exposure factors
  • soil
  • foraging
  • urban agriculture
  • agriculture
  • biosolids
  • veterinary drugs
  • Chesapeake Bay watershed protection
  • antimicrobial resistance
  • antibiotic resistance
  • exposure science
  • regulatory toxicology
  • regulatory policy
  • chemical residues in food
  • drinking water
  • product safety

A sampling of recent publications:

  • Kim BF, Santo RE, Scatterday AP, Fry JP, Synk CM, Cebron SR, Mekonnen MM, Hoekstra AY, de Pee S, Bloem MW, Neff RA, Nachman KE. 2019. Country-specific dietary shifts to mitigate climate and water crises. Global Environmental Change:101926.
  • Nachman KE, Love DC, Baron PA, Nigra AE, Murko M, Raber G, Francesconi KA, Navas-Acien A. Nitarsone, Inorganic Arsenic, and Other Arsenic Species in Turkey Meat: Exposure and Risk Assessment Based on a 2014 U.S. Market Basket Sample. Environ Health Perspect 2017;
  • Nigra AE, Sanchez TR, Nachman KE, Harvey D, Chillrud SN, Graziano JH, Navas-Acien A. The effect of the Environmental Protection Agency maximum contaminant level on arsenic exposure in the USA from 2003 to 2014: an analysis of the National Health and Nutrition Examination Survey (NHANES). Lancet Public Health 2(11): e513-e521.
  • Spaur M, Davis BJK, Kivitz S, DePaola A, Bowers JC, Curriero FC, Nachman KE*. A systematic review of post-harvest interventions for Vibrio parahaemolyticus in raw oysters. (in press, Science of the Total Environment, July 2020) [*corresponding author]
  • Nachman KE, Punshon T, Rardin L, Signes-Pastor AJ, Murray CJ, Jackson BP, et al. 2018. Opportunities and challenges for dietary arsenic intervention. Environmental Health Perspectives 126:084503.