2023 Fiscal Year Final Research Report

Long-term Effect of Light Exposure on Health Outcomes

Research Project

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Project/Area Number	19H03903
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Review Section	Basic Section 58030:Hygiene and public health-related: excluding laboratory approach
Research Institution	Nara Medical University
Principal Investigator	OBAYASHI KENJI 奈良県立医科大学, 医学部, 特任准教授 (30596656)
Co-Investigator(Kenkyū-buntansha)	佐伯圭吾奈良県立医科大学, 医学部, 教授 (60364056) 根来宏光筑波大学, 医学医療系, 准教授 (80708595) 山上優紀奈良県立医科大学, 医学部, 助教 (90823956) 吉川匡宣奈良県立医科大学, 医学部附属病院, 研究員 (20632764)
Project Period (FY)	2019-04-01 – 2024-03-31
Keywords	光曝露 / 体内時計 / サーカディアンリズム / 糖尿病 / 動脈硬化 / うつ症状
Outline of Final Research Achievements	Modern people are exposed to a large amount of artificial light at night that humanity has never experienced before. Since the invention of the incandescent light bulb, human light consumption has been steadily increasing, but recent research has revealed that inappropriate light exposure can disrupt the body clock and affect not only sleep but also various physiological functions. In this study, we investigated the light environment of more than 3,000 local residents and clarified the effects on the onset of diabetes and the progression of arteriosclerosis.
Free Research Field	疫学
Academic Significance and Societal Importance of the Research Achievements	人類は経験したことのない大量の夜間の人工光を浴びているが、その健康影響をリアルワールドデータを用いて調査した研究は乏しい。本研究では3000人を超える地域住民の光環境を調査し健康影響を明らかにした。今後、人類がどのように光を浴びていくべきか、どのような技術革新が必要か、など多くの問題が提起されるものと思われる。