About me

I am a professor at Sun Yat-sen University, focusing on epidemiological research of gastrointestinal diseases and their comorbidities, including identifying risk factors, evaluating long-term health outcomes, and developing clinical prediction models, with the goal of achieving proactive health management for those with chronic diseases. 

I obtained my Ph.D. degree from the Institute of Environmental Medicine at Karolinska Institutet under the supervision of Prof. Fang Fang. After graduation, I joined the research group of Prof. Jonas F. Ludvigsson at the Department of Medical Epidemiology and Biostatistics, Karolinska Institutet. In March 2025, I was promoted to Assistant Professor at Karolinska Institutet.

I has served as principal investigator for nine research grants from China or Sweden and served as editor for several international journals (e.g., PLOS Medicine and BMC Medicine)

I has published over 80 SCI papers, with first/corresponding author in journals such as European Heart Journal, Gut, The Lancet Regional Health – Europe, Clinical Gastroenterology and Hepatology, PLOS Medicine, eClinicalMedicine, and Neurology.

 

ORCID IDs: https://orcid.org/0000-0003-2252-684X

ResearchGate: https://www.researchgate.net/profile/Jiangwei-Sun-sunjiangwei?ev=hdr_xprf

 

Research interests

  1. Epidemiological research on gastrointestinal diseases (e.g., inflammatory bowel disease and colorectal cancer) and their comorbidities (including cardiovascular diseases, metabolic diseases, and psychiatric disorders): applying epidemiology, biostatistics, bioinformatics, machine learning, and artificial intelligence methods in different data sources (e.g., clinical data, registry databases, and omics data) to identify disease risk factors, investigate long-term health outcomes, and develop clinical prediction models. 

  2. Research on risk factors and health outcomes of patients with neurodegenerative diseases (e.g., Parkinson's disease, Alzheimer's disease, and amyotrophic lateral sclerosis) and cancer (e.g., colorectal cancer).

 

Work experience

March 2026-now:  Professor, Sun Yat-sen University, China

April 2025-March 2026: Assistant professor, Karolinska Institutet, Sweden

May 2022-March 2025: Postdoc, Karolinska Institutet, Sweden

June 2016-August 2017: Biostatistician, Johnson & Johnson (China) Investments Ltd., China

 

Commissions of trust

1. 2026-now: editor, PLOS Medicine

2. 2025-now: editor, BMC medicine

3. 2025-now: editor, Scientific Reports

4. 2025-now: Junior editor, hLife

5. 2024-now: Editorial review board, Therapeutic Advances in Gastroenterology

6. 2024-now: Junior editor, eGastroenterology 

7. 2021-2023: Guest editor, Frontiers in Public Health

8. 2019-2021: Section editor, Annals of Translational Medicine

 

Other merits of importance

  1. First author of a textbook (623 pages), aiming at familiarizing health workers with four statistical software (i.e., SAS, R, Stata, and Python). Tsinghua University Press published it in 2021-June. Link to the book: http://www.tup.tsinghua.edu.cn/booksCenter/book_08647801.html

  2. Co-author of an epidemiological textbook (288 pages). People's Medical Publishing House Co., Ltd. published it in 2023-August. Link to the book: https://www.pmphmall.com/gdsdetail/647571-325168

 

Seleted publications

  1. Sun J, Marild K, Sundstrom J, Bergman D, Ebrahimi F, Halfvarson J, Olen O, Ludvigsson J. Association of histologic and clinical activity with major adverse cardiovascular events in patients with inflammatory bowel disease: A cohort study. Journal of Internal Medicine. 2025;298(6):697-710. 

  2. Sun J, Marild K, Bergman D, Ebrahimi F, Halfvarson J, Olen O, Ludvigsson J. Histologic remission and mortality in patients with inflammatory bowel disease: a nationwide cohort study. Clinical Gastroenterology and Hepatology. 2025. doi:10.1016/j.cgh.2025.10.030.

  3. Sun J, Yao J, Olén O, Halfvarson J, Bergman D, Ebrahimi F, Rosengren A, Sundström J, Ludvigsson J. Risk of heart failure in inflammatory bowel disease: a Swedish population-based study. European Heart Journal. 2024;45(28):2493-2504. 

  4. Sun J, Yao J, Olén O, Halfvarson J, Bergman D, Ebrahimi F, Sundström J, Ludvigsson J. Familial coaggregation of inflammatory bowel disease with cardiovascular disease: a nationwide multigenerational cohort study. Gut. 2024:gutjnl-2023-331632. 

  5. Sun J, Yao J, Olén O, Halfvarson J, Bergman D, Ebrahimi F, Roelstraete B, Rosengren A, Sundström J, Ludvigsson J. Long-term risk of myocarditis in patients with inflammatory bowel disease: a nationwide cohort study in Sweden. American Journal of Gastroenterology. 2024;119(9):1866–1874.

  6. Sun J, Yao J, Olen O, Halfvarsson J, Bergman D, Ebrahimi F, Carlsson S, Ludvigsson J, Ludvigsson J. Bidirectional association between inflammatory bowel disease and type 1 diabetes: a nationwide matched cohort and case-control study. Lancet Regional Health-Europe. 2024;46:101056. 

  7. Sun J, Roelstraete B, Svennberg E, Halfvarson J, Sundström J, Forss A, Olén O, Ludvigsson J. Long-term risk of arrhythmias in patients with inflammatory bowel disease: A population-based, sibling-controlled cohort study. PLOS Medicine. 2023;20(10):e1004305. 

  8. Sun J, Halfvarson J, Bergman D, Ebrahimi F, Roelstraete B, Lochhead P, Song M, Olén O, Ludvigsson J. Statin use and risk of colorectal cancer in patients with inflammatory bowel disease. Eclinicalmedicine. 2023;63:102182. 

  9. Sun J, Halfvarson J, Appelros P, Bergman D, Ebrahimi F, Roelstraete B, Olén O, Ludvigsson J. Long-term Risk of Stroke in Patients With Inflammatory Bowel Disease: A Population-Based, Sibling-Controlled Cohort Study, 1969-2019. Neurology. 2023;101(6):e653-e664. 

  10. Sun J, Fang F, Olén O, Song M, Halfvarson J, Roelstraete B, Khalili H, Ludvigsson J. Long-term risk of inflammatory bowel disease after endoscopic biopsy with normal mucosa: A population-based, sibling-controlled cohort study in Sweden. PLOS Medicine. 2023;20(2):e1004185. 

 

Recruitment

Postdoctoral researchers, Ph.D. students, Master students, and undergraduate students with interests in epidemiological research of digestive diseases or other chronic diseases are warmly welcome to join my research team. Please send your CV to sunjw33@mail.sysu.edu.cn and indicate the research direction and position that you are applying for in the email.