COVID-19 Information

Edit Entry | Edit CV

Margaret Rita Karagas, PhD

Chair and Professor of Epidemiology
Professor of Community and Family Medicine
James W. Squires Professor

Additional Titles/Positions/Affiliations
Director, Children's Environmental Health and Disease Prevention Research Center and Center for Molecular Epidemiology

Community and Family Medicine

University of Washington, PhD 1990

Norris Cotton Cancer Center
Quantitative Biomedical Sciences


Contact Information

Department of Epidemiology
1 Medical Center Drive
7927 Rubin Building
Lebanon NH 03756

Office: 863 Rubin Bldg Lebanon, NH
Phone: 603-653-9010
Fax: 603-653-9093

Assistant: Evan Vickers
Asst. Phone: 603-650-1918
Asst. Email:

Professional Interests

Professor Karagas' research encompasses several epidemiological studies focusing on the etiology and prevention of human cancers over the lifecourse, as well as adverse pregnancy and children's health outcomes. These include investigations to determine incidence rates of basal cell and squamous cell skin cancer for a geographically defined US population, and to assess the extent of any increase over the past 20 years. Another aspect of this research is a case-control study of these malignancies to identify risks associated with emerging exposures such as indoor tanning, ingestion of arsenic-containing drinking water and foods, immunosuppressive therapies and other factors. This research has been extended to bladder cancer. One of her current initiatives involves establishing a cohort of pregnant women in New Hampshire to assess the potential impact of arsenic and other exposures on risk of maternal and child health. Her ongoing work further includes studies of melanoma in women and collaborative investigations of exposure biomarkers, individual susceptibility, and biological response to environmental agents. Professor Karagas is one of the Principal Investigators of a NCI-funded cross-disciplinary postdoctoral training grant, serves as a mentor for early career investigators and participates in a variety of courses at the undergraduate and graduate level.

Selected Publications


Impact of antibiotics on off-target infant gut microbiota and resistance genes in cohort studies.
Lebeaux RM, Madan JC, Nguyen QP, Coker MO, Dade EF, Moroishi Y, Palys TJ, Ross BD, Pettigrew MM, Morrison HG, Karagas MR, Hoen AG
Pediatr Res. 2022 May 14; doi: 10.1038/s41390-022-02104-w. Epub 2022 May 14.
PMID: 35568730

Exposure to Contemporary and Emerging Chemicals in Commerce among Pregnant Women in the United States: The Environmental influences on Child Health Outcome (ECHO) Program.
Buckley JP, Kuiper JR, Bennett DH, Barrett ES, Bastain T, Breton CV, Chinthakindi S, Dunlop AL, Farzan SF, Herbstman JB, Karagas MR, Marsit CJ, Meeker JD, Morello-Frosch R, O'Connor TG, Romano ME, Schantz S, Schmidt RJ, Watkins DJ, Zhu H, Pellizzari ED, Kannan K, Woodruff TJ
Environ Sci Technol. 2022 May 17;56(10):6560-6573. doi: 10.1021/acs.est.1c08942. Epub 2022 May 10.
PMID: 35536918

Disinfection By-Products in Drinking Water and Bladder Cancer: Evaluation of Risk Modification by Common Genetic Polymorphisms in Two Case-Control Studies.
Beane Freeman LE, Kogevinas M, Cantor KP, Villanueva CM, Prokunina-Olsson L, Florez-Vargas O, Figueroa JD, Ward MH, Koutros S, Baris D, Garcia-Closas M, Schwenn M, Johnson A, Serra C, Tardon A, Garcia-Closas R, Carrato A, Malats N, Karagas MR, Rothman N, Silverman DT
Environ Health Perspect. 2022 May;130(5):57006. doi: 10.1289/EHP9895. Epub 2022 May 10.
PMID: 35536285

Correction: Racial and geographic variation in effects of maternal education and neighborhood-level measures of socioeconomic status on gestational age at birth: Findings from the ECHO cohorts.
Dunlop AL, Essalmi AG, Avalos L, Breton C, Camargo CA, Cowell WJ, Dabelea D, Dager SR, Duarte C, Elliott A, Fichorova R, Gern J, Hedderson MM, Thepaksorn EH, Huddleston K, Karagas MR, Kleinman K, Leve L, Li X, Li Y, Litonjua A, Ludena-Rodriguez Y, Madan JC, Nino JM, McEvoy C, O'Connor TG, Padula AM, Paneth N, Perera F, Sathyanarayana S, Schmidt RJ, Schultz RT, Snowden J, Stanford JB, Trasande L, Volk HE, Wheaton W, Wright RJ, McGrath M, program collaborators for Environmental Influences on Child Health Outcomes.
PLoS One. 2022;17(5):e0268423. doi: 10.1371/journal.pone.0268423. Epub 2022 May 6.
PMID: 35522645

A Secure and Reusable Software Architecture for Supporting Online Data Harmonization.
Feric Z, Bohm Agostini N, Beene D, Signes-Pastor AJ, Halchenko Y, Watkins D, MacKenzie D, Karagas M, Manjourides J, Alshawabkeh A, Kaeli D
Proc IEEE Int Conf Big Data. 2021 Dec;2021:2801-2812. doi: 10.1109/bigdata52589.2021.9671538.
PMID: 35449545

Carcinogenicity of cobalt, antimony compounds, and weapons-grade tungsten alloy.
Karagas MR, Wang A, Dorman DC, Hall AL, Pi J, Sergi CM, Symanski E, Ward EM, Arrandale VH, Azuma K, Brambila E, Calaf GM, Fritz JM, Fukushima S, Gaitens JM, Grimsrud TK, Guo L, Lynge E, Marinho-Reis AP, McDiarmid MA, Middleton DRS, Ong TP, Polya DA, Quintanilla-Vega B, Roberts GK, Santonen T, Sauni R, Silva MJ, Wild P, Zhang CW, Zhang Q, Grosse Y, Benbrahim-Tallaa L, de Conti A, DeBono NL, El Ghissassi F, Madia F, Reisfeld B, Stayner LT, Suonio E, Viegas S, Wedekind R, Ahmadi S, Mattock H, Gwinn WM, Schubauer-Berigan MK
Lancet Oncol. 2022 May;23(5):577-578. doi: 10.1016/S1470-2045(22)00219-4. Epub 2022 Apr 7.
PMID: 35397803

Cardiometabolic Pregnancy Complications in Association with Autism-Related Traits as Measured by the Social Responsiveness Scale in ECHO.
Lyall K, Ning X, Aschner JL, Avalos LA, Bennett DH, Bilder DA, Bush NR, Carroll KN, Chu SH, Croen LA, Dabelea D, Daniels JL, Duarte C, Elliott AJ, Fallin MD, Ferrara A, Hertz-Picciotto I, Hipwell AE, Jensen ET, Johnson SL, Joseph RM, Karagas M, Kelly RS, Lester BM, Margolis A, McEvoy CT, Messinger D, Neiderhiser JM, O'Connor TG, Oken E, Sathyanarayana S, Schmidt RJ, Sheinkopf SJ, Talge NM, Turi KN, Wright RJ, Zhao Q, Newschaffer C, Volk HE, Ladd-Acosta C, Environmental Influences On Child Health Outcomes OBOPCF
Am J Epidemiol. 2022 Mar 31; pii: kwac061. doi: 10.1093/aje/kwac061. Epub 2022 Mar 31.
PMID: 35362025

Viles WD, Madan JC, Li H, Karagas MR, Hoen AG
Ann Appl Stat. 2021 Dec;15(4):1788-1807. doi: 10.1214/21-aoas1449. Epub 2021 Dec 21.
PMID: 35342498

Youth Well-being During the COVID-19 Pandemic.
Blackwell CK, Mansolf M, Sherlock P, Ganiban J, Hofheimer JA, Barone CJ, Bekelman TA, Blair C, Cella D, Collazo S, Croen LA, Deoni S, Elliott AJ, Ferrara A, Fry RC, Gershon R, Herbstman JB, Karagas MR, LeWinn KZ, Margolis A, Miller RL, O'Shea TM, Porucznik CA, Wright RJ
Pediatrics. 2022 Apr 1;149(4) pii: e2021054754. doi: 10.1542/peds.2021-054754.
PMID: 35301542

Infant infections, respiratory symptoms, and allergy in relation to timing of rice cereal introduction in a United States cohort.
Moroishi Y, Signes-Pastor AJ, Li Z, Cottingham KL, Jackson BP, Punshon T, Madan J, Nadeau K, Gui J, Karagas MR
Sci Rep. 2022 Mar 15;12(1):4450. doi: 10.1038/s41598-022-08354-2. Epub 2022 Mar 15.
PMID: 35292690

View more publications on PubMed