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Seungyoun Jung, ScD

Academic Title:

Visiting Assistant Professor

Primary Appointment:

Epidemiology & Public Health


Howard Hall, 100B

Phone (Primary):

4107068277 (office)

Education and Training

2006    Seoul National University, Seoul, South Korea

            Bachelor of Science, Department of Food and Nutrition    


2008    Harvard School of Public Health, Boston, MA, USA

            Master of Science, Department of Epidemiology  


2012    Harvard School of Public Health, Boston, MA, USA

            Doctor of Science (Dual degree), Department of Nutrition and Epidemiology



2013    Channing Division of Network Medicine, Harvard Medical School, MA 

                   Postdoctoral Fellow



2016   Epidemiology and Public Health, University of Maryland, School of Medicine, MD

                   Postdoctoral Fellow













The primary focus of my research is examining dietary and lifestyle risk factors for cancer risk and prognosis and their underlying mechanisms using epidemiologic methods. I have conducted several epidemiologic research projects on diet and breast and colorectal cancers integrating nutrition, cancer epidemiology, pathology, and molecular biology. For example, using primary data from over 1 million women from 20 cohorts from North America, Europe, Australia, and Asia in the Pooling Project of Prospective Studies of Diet and Cancer (DCPP), I examined associations between several dietary factors, including fruits, vegetables, folate, and alcohol consumption, and the risk of breast cancer overall and of its subtypes as defined by hormone receptor status. I found that high vegetable intake and low alcohol consumption is significantly associated with a lower risk of estrogen receptor negative breast cancer, an aggressive form of breast cancer that is less responsive to hormonal treatment. I also examined the association of carotenoids with colorectal adenomas; the association of vitamin D with colorectal cancer subtypes as defined by the vitamin D receptor expression level and by the mutation status of KRAS, BRAF, and PIK3CA; and the timing of vitamin B2 intake with colorectal cancer.


I have a strong interest in identifying early life factors associated with breast cancer risk. Notably, it is increasingly perceived that breast tissue is most sensitive to endogenous and exogenous stimuli during the critical window, when breasts develop and undergo structural changes. Furthermore, breast cancer is the most common cancer and the leading cause of cancer death among young women aged 45 years and younger. Young breast cancer cases typically have worse clinicopathological phenotypes, being less responsive to treatment and disproportionally affecting young underserved women. Since 2014 at UMSOM, I have been involved in multiple projects examining how early life factors can potentially affect the risk of breast cancer among young women in the Dietary Intervention Study in Children study. I found that higher endogenous DHEAS concentrations and intakes of higher saturated fat and lower mono- and polyunsaturated fat during adolescence are significantly associated with higher breast density among young women aged 25–29 years. Taking advantage of a collaborative environment at UMSOM, my near-term research goal is to expand research efforts on identifying modifiable, early life risk factors and characterizing serum metabolites and metabolic pathways that are related to early initiation of breast cancer among young women. I also aim to investigate potential mechanisms related to disparities in breast cancer using data from a large nationally representative study of adults and children in the United States. My ultimate goal is to develop a new prevention and risk reduction program of breast cancer for younger adults.

Research/Clinical Keywords

Nutrition/Cancer Epidemiology/Breast cancer/Early life risk factor/hormone and biomarkers of cancers/Metabolomics/Health disparity

Highlighted Publications


Jung S, Allen N, Arslan AA, Baglietto L, Brinton LA, Egleston BL, Falk R, Fortner RT, Helzlsouer KJ, Idahl A, Kaaks R, Lundin E, Merritt M, Onland-Moret C, Rinaldi S, Sánchez MJ, Sieri S, Schock H, Shu XO, Sluss PM, Staats PN, Travis RC, Tjønneland A, Trichopoulou A, Tworoger S, Visvanathan K, Krogh V, Weiderpass E, Zeleniuch-Jacquotte A, Zheng W, Dorgan JF. “Demographic, lifestyle, and other factors in relation to antimullerian hormone levels in mostly late premenopausal women. Fertility and Sterility” Fertil Steril. (2017 Apr;107(4):1012-1022)

Jung S, Goloubeva O, Klifa C, LeBlanc ES, Snetselaar LG, Van Horn L, Dorgan JF “Dietary fat intake during adolescence and breast density among young women” (Cancer Epidemiol Biomarkers Prev, 2016; Jun;25(6):918-26)

Jung S, Egleston BL,D Walt Chandler, Van Horn L, Hylton NM, Klifa CC, Lasser NL, LeBlanc ES, Paris K, Shepherd JA, Snetselaar LG, Stanczyk FZ, Stevens VJ, Dorgan JF. “Adolescent endogenous sex hormones and breast density in early adulthood” (Breast Cancer Res; 2015 Jun 4;17:77)

Jung S, Wang M, Anderson K, Baglietto L, Bergkvist L, Bernstein L, Brandt PA, Buring JE, Eliasssen AH, Gapstur S. Giles GG, Goodman G, Hoffman-Bolton J, Horn-Ross PL, Inoue M, Krogh V, Lof M, Miller AB, Neuhouser ML, Park Y, Robein K, Rohan TE, Scarmo S, Schairer C, Schouten LJ, Sieri S Stevens V, Tusgane S, Visvanathan K, Wolk A, Weiderpass E, Willet WC, Zeleniuch-Jaquotte A, Zhang SM, Smith-Warner SA. “Alcohol consumption and breast cancer risk by estrogen receptor status: in a pooled analysis of 20 studies” (Int J Epidemiol; 2015 Aug 28 Epub)

Jung S, Spiegelman D, Baglietto L, Bernstein L, Boggs DA, van den Brandt PA, Buring JE, Cerhan JR, Gaudet MM, Giles GG, Goodman G, Hakansson N, Hankinson SE, Helzlsouer K, Horn-Ross PL, Inoue M, Krogh V, Lof M, McCullough ML, Miller AB, Neuhouser ML, Palmer JR, Park Y, Robien K, Rohan TE, Scarmo S, Schairer C, Schouten LJ, Shikany JM, Sieri S, Tsugane S, Visvanathan K, Weiderpass E, Willett WC, Wolk A, Zeleniuch-Jacquotte A, Zhang SM, Zhang X, Ziegler RG, Smith-Warner SA. “Fruit and vegetable intake and risk of breast cancer by hormone receptor status” (J Natl Cancer Inst; 2013 Feb 6;105(3):219-36)


Additional Publication Citations

Awards and Affiliations

2015 ASPO travel award, American Society of Preventive Oncology (ASCO) 39th Annual Conference, Birmingham, Alabama, USA

2010 Campbell's Scholar, American Institute for Cancer Research (AICR) Annual Research Conference on Food, Nutrition, Physical Activity and Cancer, Washington, DC, USA

2008-2012 Samsung Scholarship, Samsung Foundation