Shigeo Ninomiya, Kyoko Yamamoto, Eiko Mieno, Hirofumi Anai, Naoto Uemura, Takashi Kobayashi, Masato Tanigawa, Takashi Hirano, Isao Saito, Toshikatsu Hanada, Yuichi Endo, Yusuke Matsunobu, Tatsushi Tokuyasu, Kenji Ihara, Masafumi Inomata

DOI: 10.31662/jmaj.2025-0580

Original Research Article

Radiation Risk Perception, Breast Cancer Anxiety, and Mental Distress among Women Who Participated in Breast Cancer Screening Programs in Minamisoma City: Five Years after Fukushima’s 2011 Triple Disaster

Ryo Takahashi, Mika Nashimoto, Akihiko Ozaki, Michio Murakami, Yudai Kaneda, Chika Yamamoto, Naomi Ito, Hiroaki Saito, Toyoaki Sawano, Arinobu Hori, Ayu Ajitomi, Kenji Gonda, Masahiro Wada, Kazunoshin Tachibana, Tohru Ohtake, Masaharu Tsubokura, Hiromichi Ohira

DOI: 10.31662/jmaj.2025-0472

Original Research Article: Artificial Intelligence in Medicine

The Development of a Real-Time Artificial Intelligence System Using a Convolutional Neural Network for the Assessment of Infant Head Control

Akihiro Hosono, Katsura Ito, Mari Ichikawa

DOI: 10.31662/jmaj.2025-0499

Original Research Article

Nonrestorative Sleep and Poor Self-Reported Physical and Mental Health among Middle-Aged Japanese Adults: A Cross-Sectional Study

Akiko Morimoto, Hideaki Furuki, Liqian Sun, Aina Muta, Nao Sonoda

DOI: 10.31662/jmaj.2025-0464

Original Research Article

Operationalizing Clinical Competence among Occupational Physicians: Three Domains and Five Cross-Cutting Processes Identified by Reflexive Thematic Analysis

Tomoari Mori, Yoshiyuki Shibata, Yoto Taguchi, Hiroyuki Koga, Hiroko Kitamura, Shoko Kawanami

DOI: 10.31662/jmaj.2025-0590

Original Research Article

Association of Maternal Nationality with Stillbirth and Infant Mortality: An Analysis of National Data in Japan

Tasuku Okui

DOI: 10.31662/jmaj.2025-0544

Original Research Article

Disparities in Coronavirus Disease 2019 Mortality among Japanese and Non-Japanese Residents: A Natural Experimental Study

Russell Miller, Kuniko Arita, Aya Yumino, Akira Shibanuma, Yoshimasa Kawazoe, Masamine Jimba

DOI: 10.31662/jmaj.2025-0493

Original Research Article

Loneliness, Chronic Conditions, and Healthcare Engagement in Japan: A Nationwide Cross-Sectional Study

Hiroshi Ito, Shuichi Okaya, Tatsuya Watanabe, Ying-Fang Zheng, Nobutake Shimojo, Satoru Kawano, Takahiro Tabuchi

DOI: 10.31662/jmaj.2026-0048

Original Research Article

Social Isolation and Health Outcomes in Japan: A Nationwide Cross-Sectional Study

Hiroshi Ito, Shuichi Okaya, Tatsuya Watanabe, Ying-Fang Zheng, Nobutake Shimojo, Satoru Kawano, Takahiro Tabuchi

DOI: 10.31662/jmaj.2026-0129

Original Research Article

Identification of Service Areas for Nurseries Serving Mildly Ill Children in 105 Major Japanese Cities before and during the COVID-19 Pandemic

Akira Ehara

DOI: 10.31662/jmaj.2025-0555

Original Research Article

Differences in Rheological Properties between Brand and Generic Metronidazole Gels and Their Potential Impact on Malodor Management in Cancer Survivors

Atsushi Ishimura, Shiori Obuchi, Naohiro Yabuki, Motoki Inoue

DOI: 10.31662/jmaj.2025-0563

Original Research Article

Factors Associated with Postoperative Skeletal Muscle Loss during Hospitalization in Patients with Non-Small Cell Lung Cancer Undergoing Lobectomy: An Exploratory Retrospective Cohort Study

Takashi Kido, Kengo Shirado, Kenta Kawamitsu, Shota Okuno, Rie Okamoto, Manabu Yasuda

DOI: 10.31662/jmaj.2025-0519

Original Research Article

The Validity and Reliability of a Japanese Version of the Family Satisfaction in the Intensive Care Unit Survey: Multicenter Study

Megumi Takahashi, Satoshi Tamura, Michihiro Tsubaki, Shinya Ito, Yuichi Kataoka

DOI: 10.31662/jmaj.2025-0403

Original Research Article

Operational Infection Control Strategies for Clinic Staff During the Pandemic: A Multi-Facility Questionnaire Study in Japan

Kei Ijichi, Hiroshi Yotsuyanagi

DOI: 10.31662/jmaj.2026-0020

Original Research Article

Unmasking the Silent Struggle: The Impact of Psychological Distress and Social Support on Health-Related Quality of Life in Crohn’s and Ulcerative Colitis

Purvi Sukhwal, Ghazanfar Aftab, Minal Tariq, Daniah Hisham Al-Sammarraie, Alhasan Hisham Al-Sammarraie, Zainab Hisham Al-Sammarraie, Afnan Ahmed, Muhammad Saad Ullah, Abdulrahman AlQaderi, Maheen Haque, Hayian Omran

DOI: 10.31662/jmaj.2025-0524

Original Research Article

Delayed Minocycline Initiation from Symptom Onset and Severe Outcomes in Japanese Spotted Fever: A Single-Center Retrospective Study in Eastern Hiroshima, Japan

Naohiro Oda, Ichiro Takata, Toru Ueki

DOI: 10.31662/jmaj.2025-0593

Original Research Article

Mortality and Causes of Death among Older Inpatients with Non-Severe Coronavirus Disease 2019 during the Omicron Era: A Retrospective Cohort Study in a Community Hospital

Maine Takemura, Masahisa Arahata, Masato Kuriyama

DOI: 10.31662/jmaj.2025-0465

Original Research Article

Usefulness of Prognostic Stage in High-Risk Early Luminal Breast Cancer

Mio Adachi, Toshiyuki Ishiba, Takashi Kuwayama, Tomoyuki Aruga

DOI: 10.31662/jmaj.2025-0485

Original Research Article

Impact of Sarcopenia and Its Severity on Postoperative Functional Decline in Patients Undergoing Cardiac Surgery

Daisuke Ishiyama, Yoshiaki Kubota, Masahiro Koen, Aya Moroi, Momoe Ono, Hayato Watanabe, Kaito Sakai, Yukihiro Watanabe, Hitomi Ueda, Kuniya Asai, Yosuke Ishii, Yoichiro Aoyagi

DOI: 10.31662/jmaj.2026-0041

Original Research Article

Feasibility of Contrast-Enhanced Spectral Mammography in Japan: A Pilot Study

Yuko Ito, Tomoyuki Fujioka, Kazunori Kubota, Yuka Yashima, Anna Tabei, Haruka Tanaka, Toshihisa Ogawa, Tsuyoshi Nakagawa

DOI: 10.31662/jmaj.2026-0014

Original Research Article

Molecular Characterization of Ovarian Metastases from Colorectal Cancer Using Circulating Tumor DNA Analysis

Naoyuki Iwahashi, Tomoko Noguchi, Kazuko Sakai, Tamaki Yahata, Kumiko Nakata, Kaho Nishioka, Megumi Fujino, Shinichiro Takeda, Nobuhiko Suzuki, Kazuto Nishio, Kazuhiko Ino

DOI: 10.31662/jmaj.2026-0123

Original Research Article

Regional Disparities in Domiciliary Dental-Care Utilization and Their Association with Pneumonia Mortality in Japan: An Ecological Study Using National Open Data

Kyunghee Lee, Hideaki Kawaguchi

DOI: 10.31662/jmaj.2025-0561

Original Research Article

Changes in Oral Analgesic Prescribing in Japan between Fiscal Year 2014 and Fiscal Year 2022: A Nationwide Analysis Using Open Data from the National Database of Health Insurance Claims and Specific Health Checkups of Japan

Konosuke Tetsunaga, Tomonori Tetsunaga, Tomoko Tetsunaga, Yasumasa Kawada

DOI: 10.31662/jmaj.2026-0005

Original Research Article

Modified Angulated Innominate Osteotomy Using Cortical Screw Fixation for Developmental Dysplasia of the Hip: A Technical Note with a Case Series

Yuta Tsukagoshi, Hiroshi Kamada, Yohei Tomaru, Daisuke Nozawa, Shogo Nakagawa, Shutaro Aiba, Miho Asanuma, Yukino Sekine, Yasuhiro Homma

DOI: 10.31662/jmaj.2026-0084

Original Research Article

Efficacy of Early Pegfilgrastim Administration during Preoperative Docetaxel, Cisplatin, and 5-Fluorouracil Therapy in Esophageal Cancer

Masahiro Takei, Hironori Tsujimoto, Asuma Ide, Risa Kariya, Naoyuki Uehata, Takafumi Suzuki, Seiichiro Fujishima, Keita Kouzu, Yoshihisa Yaguchi, Hideki Ueno

DOI: 10.31662/jmaj.2025-0572

Original Research Article

Diverging Trends in Home Respiratory Care in an Aging Society: National Data from Japan

Tomohiro Akaba, Hideki Katsura, Miki Kubo, Etsuko Tagaya

DOI: 10.31662/jmaj.2025-0583

Clinical Trial

Triplet Therapy (Androgen Deprivation Therapy + Darolutamide + Biweekly Docetaxel) for High-risk Metastatic Castration-sensitive Prostate Cancer (TRIC Study): A Study Protocol for Open-labelled Single-Arm Phase II Clinical Trial

Hiroaki Iwamoto, Tomohiro Hori, Takahiro Inaba, Ryunosuke Nakagawa, Taiki Kamijima, Hiroshi Kano, Tomoyuki Makino, Renato Naito, Hiroshi Yaegashi, Takahiro Nohara, Kazuyoshi Shigehara, Kouji Izumi, Atsushi Mizokami

DOI: 10.31662/jmaj.2026-0045

Opinion

Japan’s Nursing Workforce as Health System Security: From Silent Brain Drain to Brain Circulation

Kazumi Kubota, Kosuke Tsubota

DOI: 10.31662/jmaj.2026-0053

Opinion

Beyond “What Should I Eat to Get Better?”: Medical Literacy, Dietary Narratives, and Supportive Nutrition in Hematologic Diseases

Akiyoshi Takami, Ichiro Hanamura

DOI: 10.31662/jmaj.2026-0074

Opinion: Artificial Intelligence in Medicine

Zero Risk Is Impossible: Confidentiality and Artificial Intelligence Use in Peer Review

Shigeki Matsubara

DOI: 10.31662/jmaj.2026-0060

Opinion: Artificial Intelligence in Medicine

Artificial Intelligence in Medical Writing: Subtle Errors and Their Complex Consequences

Shigeki Matsubara, Daisuke Matsubara, Kazuhiko Kotani

DOI: 10.31662/jmaj.2026-0030

Opinion: Artificial Intelligence in Medicine

Artificial Intelligence Use in Medical Writing: On the Meaning and Limits of Disclosure

Shigeki Matsubara

DOI: 10.31662/jmaj.2026-0121

Short Communication

Immune Checkpoint Inhibitor Retreatment after Enfortumab Vedotin in Advanced Urothelial Carcinoma: A Descriptive Study with Exploratory Evaluation of Radiotherapy

Akinori Minato, Yoshihiro Sugita, Yui Mizushima, Shuki Watanabe, Takuo Matsukawa, Kazumasa Jojima, Rieko Kimuro, Katsuyoshi Higashijima, Yujiro Nagata, Ikko Tomisaki, Eiji Kashiwagi

DOI: 10.31662/jmaj.2025-0463

Editorial

Editorial Comment to Immune Checkpoint Inhibitor Retreatment after Enfortumab Vedotin in Advanced Urothelial Carcinoma: A Descriptive Study with Exploratory Evaluation of Radiotherapy

Jimpei Miyakawa

DOI: 10.31662/jmaj.2026-0081

Short Communication

Progressive Cerebellar Atrophy Associated with a KDM5C Variant

Sato Suzuki-Muromoto, Saki Uneoka, Aritomo Kawashima, Yuki Yagi, Yu Katata, Wakaba Endo, Takehiko Inui, Noriko Togashi, Yusuke Takezawa, Masakiyo Hayasaka, Jun Takayama, Atsuo Kikuchi, Kazuhiro Haginoya

DOI: 10.31662/jmaj.2025-0446

Images

Left External Iliac Artery Mycotic Aneurysm Secondary to Escherichia coli Bacteremia with Iliopsoas Abscess

Chee Yik Chang

DOI: 10.31662/jmaj.2025-0305

Images

Single-Photon Emission Computed Tomography in Unilateral Asterixis

Hideyuki Matsumoto, Toshiyuki Kakumoto, Naohiro Uchio, Yasuhisa Sakurai

DOI: 10.31662/jmaj.2025-0350

Letter to the Editor

The Imperative of Data Transparency for Pursuing Scientific Truth about COVID-19 Vaccination and Excess Deaths

Hideki Kakeya, Takeshi Nitta, Yukari Kamijima, Takayuki Miyazawa

DOI: 10.31662/jmaj.2025-0522

Letter to the Editor: Artificial Intelligence in Medicine

Scientific Writing in the Age of Artificial Intelligence

Soichiro Saeki

DOI: 10.31662/jmaj.2026-0083

Letter to the Editor

Generative Artificial Intelligence for Peer Review and Editorial Functions

Jaime A. Teixeira da Silva

DOI: 10.31662/jmaj.2026-0170

Letter to the Editor

Reevaluating Medication Reduction and Functional Outcomes after Stroke

Jahanzaib Khan

DOI: 10.31662/jmaj.2026-0075

Letter to the Editor: Artificial Intelligence in Medicine

Case Reports and Artificial Intelligence: Picking a Pearl among Abundant Reports

Shigeki Matsubara

DOI: 10.31662/jmaj.2026-0135

Letter to the Editor

Interpreting Mini-Mental State Examination Differences in Stable Nonhypoxemic Chronic Obstructive Pulmonary Disease: Letter to the Editor

Yudai Kaneda

DOI: 10.31662/jmaj.2026-0172

Erratum

Erratum: 2024;7(2):242-9 (DOI: 10.31662/jmaj.2023-0148)

Khoa Tuan Vo, Khue Thy Nguyen, Hirohide Yokokawa, Aya Goto, Toshio Naito

DOI: 10.31662/jmaj.e0004

Current Issue

Volume: 9
Issue: 4

PRINT ISSN: 2433-328X
ONLINE ISSN: 2433-3298

Publisher:
Japan Medical Association
2-28-16 Honkomagome, Bunkyo-ku, Tokyo 113-8621, Japan
The Japanese Association of Medical Sciences
c/o Japan Medical Association, 2-28-16 Honkomagome, Bunkyo-ku, Tokyo
113-8621, Japan

Frequency: Bi-monthly
Journal Metrics (2025) as of January 31, 2026:
549 papers submitted to JMA Journal
42.0% acceptance rate
35.2 days from submission to first decision
72.2 days from submission to acceptance

Impact Factor

2.0 (2025)

Articles

Table of Contents July 15, 2026; Volume 9, Issue 4

Current Issue

Impact Factor

Most read articles in Volume 9, Issue 1