Catherine Karr

Adjunct Professor, Epidemiology
Professor, Pediatrics - General Pediatrics
Professor, Env. and Occ. Health Sciences



PhD Epidemiology, University of Washington, 2004
MD Medicine, University of Washington, 1999
MS Toxicology, University of Washington, 1989



UW DEOHS, 4225 Roosevelt Way NE, Suite 301
Seattle, WA 98105


Catherine Karr MD PhD (she/her) is an environmental epidemiologist and pediatric environmental medicine specialist. She has a primary appointment in the University of Washington Department of Pediatrics, Joint in Environmental & Occupational Health Sciences, and Adjunct in Epidemiology. Her studies focus largely on low resourced communities in the U.S. as well as other low and middle income nations (Kenya). Her work represents methods comprising merging of large datasets on environmental factors and pediatric health outcomes as well as small in depth research using community engaged research practice. Indoor and outdoor air pollution, lead and pesticide exposures are focus areas of her expertise. She also maintains a general pediatric practice at the UW Pediatric Clinic at Roosevelt and directs a UW based regional outreach and consultation service, the NW Pediatric Environmental Health Specialty Unit (PEHSU).

Research Interests

Children's environmental health

Recent Publications (PubMed)

Subpopulations of children with multiple chronic health outcomes in relation to chemical exposures in the ECHO-PATHWAYS consortium.
(2024 Feb 8)
Environ Int 185(): 108486
Day DB, LeWinn KZ, Karr CJ, Loftus CT, Carroll KN, Bush NR, Zhao Q, Barrett ES, Swan SH, Nguyen RHN, Trasande L, Moore PE, Adams Ako A, Ji N, Liu C, Szpiro AA, Sathyanarayana S, program collaborators for Environmental influences on Child Health Outcomes

Associations of residential green space with internalizing and externalizing behavior in early childhood.
(2024 Feb 8)
Environ Health 23(1): 17
Hazlehurst MF, Hajat A, Tandon PS, Szpiro AA, Kaufman JD, Tylavsky FA, Hare ME, Sathyanarayana S, Loftus CT, LeWinn KZ, Bush NR, Karr CJ

Placental transcriptomic signatures of prenatal and preconceptional maternal stress.
(2024 Jan 11)
Mol Psychiatry
Baker BH, Freije S, MacDonald JW, Bammler TK, Benson C, Carroll KN, Enquobahrie DA, Karr CJ, LeWinn KZ, Zhao Q, Bush NR, Sathyanarayana S, Paquette AG

Prenatal exposures to phthalates and life events stressors in relation to child behavior at age 4-6: A combined cohort analysis.
(2024 Jan)
Environ Int 183(): 108425
Barrett ES, Day DB, Szpiro A, Peng J, Loftus CT, Ziausyte U, Kannan K, Trasande L, Zhao Q, Nguyen RHN, Swan S, Karr CJ, LeWinn KZ, Sathyanarayana S, Bush NR

Wildfire smoke knowledge gaps: A survey of pediatric pulmonary providers in Washington State.
(2023 Dec 28)
Pediatr Pulmonol
Crocker ME, Cogen JD, Karr CJ

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