

Kenji Obayashi
(大林 賢史)Profile Information
- Affiliation
- Research Associate Professor, Department of Epidemiology, Nara Medical University School of Medicine
- CEO, Keiseikai Medical and Healthcare Group
- Degree
-
MD, PhD
- Researcher number
- 30596656
- ORCID iD
https://orcid.org/0000-0001-6346-9082
- J-GLOBAL ID
- 201201048113910387
- researchmap Member ID
- B000222680
- External link
Kenji Obayashi, MD, PhD, is an Associate Professor in the Department of Epidemiology, Nara Medical University School of Medicine. Dr. Obayashi earned his MD at Tokyo Medical University, and PhD at Nara Medical University, Japan. He completed post-graduate training in internal medicine and clinical fellowship in adult cardiology from Tokyo Women’s Medical University Hospital, Japan. He is board certified in internal medicine and cardiology. His primary research interest is in exploring the exposures that influence the circadian timing system in human. Thus, Dr. Obayashi’s current special interests include epidemiology related to circadian biological rhythm (Chronoepidemiology).
<Certifications>
Board Certified Senior Epidemiologist of the Japan Epidemiological Association (JEA)
Board Certified Physician/Supervisory Physician for Public Health & Social Medicine of the Japan Board of Public Health and Social Medicine
Board Certified Environmental Health and Preventive Medicine Expert of the Japanese Society for Hygiene (JSH)
Board Certified Fellow of the Japanese Circulation Society (JCS)
Board Certified Sports & Health Physician of the Japan Medical Association (JMA)
Board Certified Occupational Health Physician of the Japan Medical Association (JMA)
Board Certified Fellow of the Japanese Society of Internal Medicine of the Japan Medical Association (JMA)
Research Areas
3Major Awards
5Major Committee Memberships
10-
2023 - Present
-
2023 - Present
-
2022 - Present
-
2017 - Present
-
2016 - Present
Research Interests
25Major Professional Memberships
10Major Other
7Papers
116-
Sleep Med, 124(12) 688-694, Dec, 2024 Peer-reviewed
-
Park Relat Disord, 129(12) 107161, Dec, 2024 Peer-reviewedLast author
-
Sleep Epidemiol, (in press), Oct, 2024 Peer-reviewed
-
SLEEP, 47(8) zsae036, Aug, 2024 Peer-reviewedLead authorCorresponding author
-
Environ Health Prev Med, 29 12, Jan, 2024 Peer-reviewed
-
J Clin Sleep Med, 20(1) 101-109, Jan, 2024 Peer-reviewedLast authorCorresponding author
-
Invest Ophth Vis Sci, 64(12) 34, Dec, 2023 Peer-reviewed
-
J Clin Med, 12(16) 5312, Aug, 2023 Peer-reviewed
-
Psychiat Clin Neuros, 77(8) 442-448, Aug, 2023 Peer-reviewed
-
J Epidemiol, 33(8) 398-404, Aug, 2023 Peer-reviewed
-
J Clin Sleep Med, 19(7) 1281-1292, Jul, 2023 Peer-reviewed
-
J Geriatr Psychiat Neurol, 36(4) 316-322, Jul, 2023 Peer-reviewedLast authorCorresponding author
-
J Hypertens, 41(6) 1018-1023, Jun, 2023 Peer-reviewed
-
SLEEP, 46(5) zsac197, May, 2023 Peer-reviewed
-
Clin Park Relat Disord, 8 100194, Mar, 2023 Peer-reviewed
-
J Affect Disord, 323(2) 762-769, Feb, 2023 Peer-reviewed
-
Environ Res, 215 114350, Dec, 2022 Peer-reviewedLead authorCorresponding author
-
J Hypertens, 40(10) 2013-2021, Oct, 2022 Peer-reviewed
-
Hypertension, 79(8) 1845-1855, Aug, 2022 Peer-reviewed
-
Japanese Journal of Public Health, 69(4) 262-272, Apr, 2022 Peer-reviewed
Major Books and Other Publications
19-
丸善出版, Jul, 2024 (ISBN: 9784621309216)
-
厚生労働省, Dec, 2023
-
ライフ・サイエンス, Sep, 2023
-
朝倉書店, Aug, 2023 (ISBN: 9784254266528)
-
日本臨床社, Dec, 2020
-
日本臨床社, May, 2020
-
日本工業出版株式会社, Apr, 2020
-
羊土社, Jan, 2019 (ISBN: 4758125163)
-
建帛社, Mar, 2018 (ISBN: 4767918561)
-
医学書院, Jan, 2018
-
ライフ・サイエンス, Oct, 2015 (ISBN: 4898015352)
Presentations
210-
Annual Metting of Japanese Scosiety of Sleep Research 2025, Jun, 2025 Invited
-
Annual Conference of the International Society for Bipolar Disorders 2025, Jun, 2025
-
Annual Meeting of the Japanese Society for Hygiene 2024, Mar, 2025
-
Annual Meeting of the Japanese Society for Hygiene 2024, Mar, 2025
-
Annual Meeting of the Japanese Society for Hygiene 2024, Mar, 2025
-
Annual Meeting of the Japanese Society for Hygiene 2024, Mar, 2025
-
Annual Meeting of the Japanese Society for Hygiene 2024, Mar, 2025
-
Annual Scientific Meeting of the Japanese Circulation Society 2025, Mar, 2025
-
Annual Scientific Meeting of the Japan Epidemiological Association 2024, Feb, 2025
-
Annual Scientific Meeting of the Japan Epidemiological Association 2024, Feb, 2025
-
Annual Meeting of the Japanese Retina and the Vitreous Sociary, Dec, 2024
-
Ibaraki Kindney Conference, Nov, 2024 Invited
-
Annual Meeting of the Nara Prefecture Public Health Association 2024, Nov, 2024
-
Annual Meeting of the Japan Academy of Diabetes Education and Nursing 2024, Sep, 2024
-
Annual Scientific Session of the Japanese College of Cardiology, Sep, 2024
-
Architectural Institute of Japan Convention 2024, Aug, 2024
-
Annual Metting of Japanese Scosiety of Sleep Research 2024, Jul, 2024 Invited
-
Annual Metting of Japanese Scosiety of Sleep Research 2024, Jun, 2024
-
Diabetes Expert Seminar, Jun, 2024 Invited
-
Annual Conference of the International Society for Bipolar Disorders 2024, Jun, 2024
Major Teaching Experience
6Industrial Property Rights
5Major Research Projects
22-
Scientific Research (C), JSPS KAKENHI, Apr, 2025 - Mar, 2029
-
Scientific Research (B), JSPS KAKENHI, Apr, 2019 - Mar, 2024
-
Medicine Research Grant, Takeda Science Foundation, Nov, 2018 - May, 2021
-
Scientific Research (B), JSPS KAKENHI, Apr, 2015 - Mar, 2019
-
Grant-in-Aid for Young Scientists (B), JSPS KAKENHI, Apr, 2012 - Mar, 2015
-
A-STEP, Japan Science and Technology Agency, Nov, 2012 - Mar, 2014
Major Academic Activities
26Major Media Coverage
31-
朝日新聞, Oct, 2024 Newspaper, magazine
-
The Washington Post(米国), Dec, 2022 Internet
-
日経新聞, Jun, 2020 Newspaper, magazine
-
Daily Mail(英国), Nov, 2019 Internet
-
REUTERS(英国), Nov, 2019 Internet
-
週刊文春, Jun, 2018 Newspaper, magazine
-
TIME(米国), Mar, 2018 Internet
-
REUTERS(英国), Jul, 2016 Internet
Major Social Activities
18