IIDA Miho

写真a

Affiliation

School of Medicine, Department of Preventive Medicine and Public Health Department of Preventive Medicine and Public Health, Keio University School of Medicine ( Shinanomachi )

Position

Assistant Professor/Senior Assistant Professor

Related Websites

External Links

Profile 【 Display / hide

  • Miho Iida, MD, PhD, is an obstetrician–gynecologist, occupational health physician, and public health researcher based in Japan. Her research focuses on women’s health across the life course, including menstrual health, reproductive health, menopause, and aging, by integrating biological data with social and workplace factors.
    She is the Principal Investigator of the aging substudy and the women’s health substudy within the Tsuruoka Metabolomics Cohort Study, a long-running population-based cohort established in 2012 in Japan. She is also involved in several cohort studies focusing on women’s health among working populations.

Message from the Faculty Member 【 Display / hide

  • I am committed to advancing research and education to help create a society in which women can remain healthy, live authentically, and thrive throughout every stage of life. Through improving women's health, I also hope to contribute to the well-being of their families, workplaces, future generations, and society as a whole.

    A central principle of my work is translating questions that arise from clinical practice and occupational health into research and translating research findings back into healthcare and society. I believe that women's health can only be fully understood by integrating biological mechanisms with social and environmental determinants. Thus, my research combines biological data, including multiomics, with information on lifestyle, workplace, and other social factors to better understand women's health across the life course and to generate evidence for personalized prevention and health promotion.

Other Affiliation 【 Display / hide

  • School of Medicine, Obstetrics and Gynecology

Career 【 Display / hide

  • 2008.04
    -
    2010.03

    Kameda Medical Center, Residency

  • 2010.04
    -
    2014.03

    Keio University Hospital, Obstetrics and Gynecology, Residency/Fellowship

  • 2011.04
    -
    2012.03

    Saiseikai Utsunomiya Hospital, Obstetrics and Gynecology, Residency/Fellowship

  • 2012.04
    -
    2013.03

    Kawasaki Municipal Hospital, Obstetrics and Gynecology, Residency/Fellowship

  • 2017.10
    -
    2018.03

    Keio University Hospital, Obstetrics and Gynecology, Assistant Professor

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Academic Background 【 Display / hide

  • 2002.04
    -
    2008.03

    Keio University, School of Medicine, 医学科

    University, Graduated, Master's course

  • 2014.04
    -
    2017.09

    Keio University, Graduate School of Medicine, PhD Course

    Graduate School, Completed, Doctoral course

Academic Degrees 【 Display / hide

  • PhD (medicine), Keio University School of Medicine, Coursework, 2017.09

    Profiling of plasma metabolites in postmenopausal women with metabolic syndrome

Licenses and Qualifications 【 Display / hide

  • Board Certified Supervisory Physician for Public Health and Social Medicine, 2022.04

  • Medical license, 2008.04

  • Board Certified Physician for Obstetrics and Gynecology, 2013.10

  • Board Certified Physician for Anti-Aging Medicine, 2017.01

  • Board Certified Physician for Public Health and Social Medicine , 2017.04

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Research Areas 【 Display / hide

  • Life Science / Obstetrics and gynecology

  • Life Science / Hygiene and public health (laboratory)

  • Life Science / Hygiene and public health (non-laboratory)

  • Life Science / Medical management and medical sociology

Research Keywords 【 Display / hide

  • Metabolomics

  • Preventive Medicine

  • Public Health

  • Women's Health

  • Occupational Health

 

Books 【 Display / hide

  • 更年期以降の健康課題×フェムテック

    飯田 美穂, (株)ロギカ書房, 2022.10

    Contact page: 205-214

  • Endometrial Cancer: Current Epidemiology, Detection and Management

    Banno K, IIDA Miho, Farghaly SA, Umene K, Kisu I, Aoki D, Nova Science Publishers, Inc., 2014,  Page: 17

    Scope: Novel Therapeutic Agents for Treatment of Endometrial Cancer,  Contact page: 321-337

     View Summary

    Endometrial cancer is a female genital cancer that occurs frequently in Europe and the United States. Conventional therapy for endometrial cancer does not permit fertility preservation or have effects on advanced and recurrent cancers, and new pharmacotherapies are needed. The fourth-generation progestin, dienogest, blocks excessive estrogenic activity and inhibits endometrial overgrowth. Metformin is an antidiabetic drug that may have an effect on endometrial cancer through targeting of the mammalian target of rapamycin (mTOR) pathway. mTOR inhibitors block cancer growth by arresting the cell cycle in G1 phase and clinical trials of new generation drugs with multiple sites of action in the mTOR pathway are underway. To inhibit down regulation of tumor suppressor genes by DNA hypermethylation and histone deacetylation, drugs targeting DNA methyltransferase (DNMT), microRNA (miRNA) and histone deacetylase (HDAC) are under development. AEZS-108 targeted to LHRH receptors on tumors is an effective compound for chemotherapy of endometrial cancer. In addition, targeting STAT3 or Wnt/β-catenin pathway by specific inhibitor in tumor cells and immunosuppressive cells, or along with other immunotherapy, might restore the immunocompetence of endometrial cancer patients. The oncogenic mechanisms underlying endometrial cancer, and regulatory factors based on the characteristics of endometrial cancer cells are gradually emerging. These data are likely to lead to development of new effective therapy for this disease.

Papers 【 Display / hide

  • Within-Person Seasonal Variability of Aminotransferases and Long-Term Glycemic Control in Adults With Type 2 Diabetes (JDDM 85)

    Toki R., Sakamoto M., Yuki M., Iida M., Yamazaki M., Ichikawa S., Horiuchi R., Maegawa H., Okamura T., Takebayashi T.

    Liver International 46 ( 7 )  2026.07

    ISSN  14783223

     View Summary

    Background & Aims: Aminotransferases are widely used for metabolic dysfunction-associated steatotic liver disease (MASLD) evaluation, especially in type 2 diabetes mellitus (T2DM). Whether within-person seasonal variation affects classification near commonly used thresholds or relates to long-term metabolic outcomes remains unclear. Methods: This registry-based cohort analysed monthly aspartate aminotransferase (AST) and alanine aminotransferase (ALT) measurements from 6039 adults with T2DM in the Japan Diabetes Clinical Data Management registry (2014–2020). Classification discordance across the 30 IU/L threshold was compared between winter-mean and summer-mean values. Individual seasonal amplitude was derived from seasonal-trend decomposition of multiply imputed monthly time series. Final glycated haemoglobin (HbA1c) and non-achievement of HbA1c < 7% were analysed using multivariable regression. Results: Both AST and ALT showed significant seasonal variation, with the highest values in late autumn to early winter and the lowest in summer (p < 0.001). Approximately one in nine patients with borderline ALT values showed discordant winter-summer classification. Each 1-SD increase in AST amplitude was associated with 0.06 percentage points higher final HbA1c (95% CI, 0.04–0.08) and higher odds of not achieving HbA1c < 7% (odds ratio, 1.14; 95% CI, 1.08–1.21; p < 0.001). ALT amplitude showed a similar but weaker, less consistent association. Conclusions: AST and ALT exhibited reproducible seasonal variation peaking in late autumn to early winter, with approximately one in nine patients near the MASLD screening threshold reclassified depending on season. Greater seasonal amplitude, especially AST, was independently associated with poorer glycemic control, supporting season-aware interpretation in routine clinical practice.

  • Gynecologists' Perspectives on Menopausal Care and Work-Related Outcomes in Japan: A Nationwide Cross-Sectional Survey

    Ogawa M., Kinouchi R., Yamaguchi A., Iida M., Okano H., Takamatsu K., Iwasa T.

    Journal of Obstetrics and Gynaecology Research 52 ( 7 )  2026.07

    ISSN  13418076

     View Summary

    Aim: This study investigated the current clinical status, structural barriers, and perceived outcomes of menopausal care provided by gynecologists in Japan, with a specific focus on the management of menopausal disorders among working women. Methods: A web-based survey was conducted among 919 gynecologists in December 2025. Participants were categorized by weekly menopausal patient volume (none/minimal, 1–19, or ≥ 20 patients/week). A mixed-methods approach was employed, including adjusted multivariable logistic regression analyses. Results: Most gynecologists (89.4%) encountered patients with decreased work performance, and 29.8% reported managing patients who had resigned owing to menopausal symptoms. Meanwhile, 82.4% of respondents perceived improvements in work performance following treatment. Adjusted multivariable analyses confirmed weekly patient volume as an independent predictor of occupational outcomes and willingness to continue menopausal care. While nearly all gynecologists prescribed hormone replacement therapy and Kampo (Japanese herbal) medicine, the variety of additional treatments increased significantly with patient volume. Furthermore, 66.4% of gynecologists reported that their residency training in menopausal disorders was insufficient. Consultations for menopausal disorders required significantly more time than those for dysmenorrhea, regardless of patient volume. Qualitative analysis identified inadequate reimbursement as the most frequently cited systemic concern. Conclusions: Gynecologists frequently encounter menopause-related work performance impairment but perceive treatment as beneficial. After adjustment for physician characteristics, higher patient volume remained an independent predictor of severe occupational consequences and willingness to continue menopausal care. Addressing time-intensive consultations, insufficient reimbursement, and limited postgraduate education is essential to support working women with menopausal symptoms.

  • Longitudinal Study of Plasma Metabolites During Menopause and Their Associations With Later Onset of Metabolic Syndrome

    Miyake A., Iida M., Harada S., Sugiyama D., Matsumoto M., Miyagawa N., Toki R., Edagawa S., Hirata A., Kuwabara K., Okamura T., Sato A., Amano K., Hirayama A., Sugimoto M., Soga T., Tomita M., Arakawa K., Kisu I., Yamagami W., Takebayashi T.

    Journal of Clinical Endocrinology and Metabolism 111 ( 6 ) e1672 - e1680 2026.06

    ISSN  0021972X

     View Summary

    Context: Previous metabolomics studies suggest potential associations between menopausal changes in lipids and an increased risk of metabolic syndrome (MetS). However, longitudinal data on other key metabolites, such as branched-chain amino acids (BCAAs) and homocysteine, remain limited, and most studies lack long-term follow-up across the menopause transition. Objective: This study aimed to investigate longitudinal changes in circulating metabolites during menopause over a mean follow-up of 5 years and assess their associations with subsequent MetS development. Methods: Premenopausal women from the Tsuruoka Metabolomics Cohort Study who participated in at least one follow-up survey were included. Menopausal status, data on MetS, and plasma metabolites profiled using capillary electrophoresis mass spectrometry were assessed at each visit. Thirty-one metabolites were examined for associations with menopausal status using mixed-effects models. The association of these menopause-related metabolites with MetS development was examined via logistic regression analysis adjusted for follow-up duration. Results: Among 953 women (aged 43.8 ± 5.4 years), 316 (33.2%) reached menopause during follow-up (5.0 ± 1.1 years). Eighteen metabolites changed significantly with menopause, particularly those related to BCAA metabolism, urea cycle, and homocysteine metabolism. Of 695 women without MetS at baseline, 65 (9.4%) developed MetS. Glutamate (odds ratio [95% CI]: 1.95 [1.49-2.57]) was associated with higher MetS risk. Higher levels of glutamate, valine, leucine, and cystine were significantly associated with the development of hyperglycemia. Conclusion: Longitudinal changes in charged metabolites occur across the menopausal transition, with specific metabolites such as glutamate possibly contributing to the metabolic alterations underlying increased MetS risk.

  • Seasonal BMI Amplitude and Risk of Kidney Function Decline in Japanese Adults With Type 2 Diabetes (JDDM 82)

    Toki R., Sakamoto M., Yuki M., Iida M., Yamazaki M., Ichikawa S., Horiuchi R., Maegawa H., Okamura T., Takebayashi T.

    Diabetes Care 49 ( 6 ) 990 - 998 2026.06

    ISSN  01495992

     View Summary

    OBJECTIVE Body weight variability is linked to cardiometabolic outcomes, but its renal impact in type 2 diabetes remains uncertain. We tested whether the magnitude of seasonal BMI fluctuation is independently associated with kidney function decline. RESEARCH DESIGN AND METHODS We analyzed a nationwide, multicenter Japanese cohort (2014-2020). Monthly BMI was modeled using seasonal-trend locally estimated scatterplot smoothing to quantify each participant’s within-year peak-to-trough difference. The primary outcome was ≥40% decline in estimated glomerular filtration rate (eGFR). Secondary outcomes were ≥30% eGFR decline, creatinine doubling, incident chronic kidney disease (CKD) stage ≥3, and kidney failure. Associations were estimated using multivariable Cox models with clinic as a random effect. RESULTS Among 6,700 outpatients (median follow-up: 6.8 years), 779 reached the primary end point. Each 1-SD increase in BMI fluctuation was associated with higher risk of ≥40% eGFR decline (hazard ratio [HR] 1.23, 95% CI 1.16-1.31). The highest versus lowest tertile showed a 1.7-fold increased risk (HR 1.72, 95% CI 1.42-2.09). Patterns were consistent for ≥30% eGFR decline (HR 1.18, 95% CI 1.13-1.23), creatinine doubling (HR 1.30, 95% CI 1.17-1.45), and incident CKD stage ≥3 (HR 1.11, 95% CI 1.07-1.16). Longitudinal analyses showed steeper eGFR decline in the highest-fluctuation group. Results were robust across sensitivity analyses, including models for time-varying medication exposure. CONCLUSIONS In type 2 diabetes, larger intra-annual BMI fluctuations were independently and dose-dependently associated with kidney function decline. Seasonal BMI amplitude may identify higher-risk individuals; whether reducing seasonal BMI fluctuations improves kidney outcomes warrants prospective evaluation.

  • Changes in rheumatoid arthritis medication in pregnancy: a retrospective observational study using a Japanese claims database

    Shiotsuki Y., Iida M., Tsuchiya S., Matsumoto M., Sugiyama D.

    Modern Rheumatology 36 ( 3 ) 345 - 352 2026.05

    ISSN  14397595

     View Summary

    Objectives: To examine changes in rheumatoid arthritis (RA) medication prescriptions during the peri-delivery period, and to explore recent RA prescription trends using a Japanese claims database. Methods: This retrospective observational cohort study used an insurance claims database provided by JMDC Inc. We identified pregnant women with RA who delivered between April 2018 and October 2023. The outcome was the initiation or resumption of intensive treatment after delivery, defined as new or restarting of biologic disease modifying anti-rheumatic drugs (DMARDs), targeted synthetic DMARDs, oral corticosteroids (OCS), or methotrexate. Results: We identified 229 mothers with RA and 246 deliveries. Intensive treatment was initiated in 55 (22.4%) deliveries. Continuation of the same prescription from before delivery was observed in 106 (43.1%) deliveries. The most frequent new prescription postpartum was methotrexate in 18 (7.3%) deliveries. OCS were the most commonly prescribed medications throughout the observation period. Tumour necrosis factor alpha inhibitors were prescribed at similar rates as OCS before pregnancy and in the first trimester, but declined during the second and third trimesters, and returned postpartum. Conclusions: The number of deliveries that required intensive treatment postpartum was lower than in previous studies. Our results suggest that the latest guidelines for pregnant women with RA help control disease activity.

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Papers, etc., Registered in KOARA 【 Display / hide

Reviews, Commentaries, etc. 【 Display / hide

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Presentations 【 Display / hide

  • A longitudinal study on metabolic profiling of menopause: a large-scale population-based cohort study in Japan

    Atsuko Miyake*1*2, Miho Iida*2, Toru Takebayashi*2, Kouji Banno*1, Wataru Yamagami*1, Mamoru Tanaka*1

    [Domestic presentation]  第76回 日本産科婦人科学会学術講演会 (横浜) , 

    2024.04

  • 習慣的飲酒と尿メタボロームの関連:鶴岡メタボロームコホート研究

    原田 成, 飯田美穂, 宮川尚子, 平田あや, 松元美奈子,土岐了大, 枝川 峻, 岡村智教, 武林 亨

    [Domestic presentation]  第94回 日本衛生学会 (熊本) , 

    2024.03

  • 日本の地域住民における喫煙習慣の有無別の血清総ビリルビンと脳・心血管疾患発症との関連

    平田あや1、原田成1、飯田美穂1、宮川尚子1、松元美奈子1、土岐了大1、枝川俊1、三宅温子1、桑原和代1、杉山大典1,2、岡村智教1、武林亨1

    [Domestic presentation]  第34回 日本疫学会学術総会 (滋賀県大津市・びわ湖大津プリンスホテル) , 

    2024.01
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    2024.02

    日本疫学会

  • 日本人集団における血中アミノ酸濃度のゲノムワイド関連解析(GWAS)とそれを用いた疾患との関連研究

    土岐了大, 小島駿, 伏木蒼太郎, 原田成, 平田あや, 飯田美穂, 松元美奈子, 宮川尚子, 枝川竣, 三宅温子, 須藤洋一, 大桃秀樹, 山崎弥生, 岡村智教, 清水厚志, 武林亨

    [Domestic presentation]  第34回 日本疫学会学術総会 (滋賀県大津市・びわ湖大津プリンスホテル) , 

    2024.01
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    2024.02

    日本疫学会

  • Association of BMI at age 18 and subsequent infertility: Japan Nurses' Health Study

    Miho Iida1, Kunihiko Hayashi2, Yuki Ideno2, Kazue Nagai2, Yukiko Miyazaki3, Yasunori Sato1

    [Domestic presentation]  第34回 日本疫学会学術総会 (滋賀県大津市・びわ湖大津プリンスホテル) , 

    2024.01
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    2024.02

    日本疫学会

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Research Projects of Competitive Funds, etc. 【 Display / hide

  • ステロイドホルモン・プロファイリングを用いた女性健康実現のための地域コホート研究

    2019.04
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    Present

    文部科学省, 科学研究費助成事業(科研費), 若手研究, No Setting, Principal investigator

     View Summary

    近年、エイジングに伴う健康寿命延伸・QOL向上において、ステロイドホルモンが果たす役割の重要性が明らかになってきた。とくに高齢女性においては、更年期状態の把握以外に女性ホルモン濃度を測定する意義は乏しいとされてきたのに対し、閉経後の卵巣や副腎における性ホルモンやその前駆体の分泌が明らかとなり、これらの網羅的なプロファイルと認知機能低下、フレイルや動脈硬化性疾患、骨粗鬆症等との関連について検証する意義は大きい。
    本研究では、高齢女性の健康状態やQOLに関連する代謝プロファイル・ステロイドホルモンプロファイルを明らかにし、女性の健康寿命・QOL向上に繋げることを目的とする。

  • メタボロミクス疫学による個別か女性予防医療研究:更年期障害の客観的評価指標の探索と疾患発症予測の検討

    2018.10
    -
    2019.09

    大和証券ヘルス財団, 平成30年度(第45回)調査研究助成, 中高年・高齢者のための予防医学・臨床医学、並びに医療に関する調査研究, No Setting, Principal investigator

     View Summary

    女性活躍社会の実現は,多様性を尊重する世界の潮流となっている。人口減少社会を迎えるわが国においても,2020年までに指導的地位に女性が占める割合を30%程度とする目標が掲げられている.一方で,社会において指導的地位を担う可能性が高い40-50代女性において,更年期障害を有する女性の労働能力の低下は,更年期障害なしの場合の8.4倍にも及ぶことが示されている.更年期障害は,軽症のものも含めると全女性の半数以上が経験するが,エストロゲン分泌低下の直接的影響を受ける血管運動神経系症状(例:ほてり,発汗)と,心理・社会的背景の変化に基づくエストロゲン低下を介さない精神神経系/運動神経系症状(例:抑うつ,めまい)の両者が複合的に絡み合い多彩な表現型を示すことから,さまざまな状態に応じて診断・治療の最適化を図る個別化予防医療の対象疾患として重要である.
    体内の代謝プロファイルを網羅的に評価することのできる手法であるメタボロミクスは,遺伝子-環境相互作用の結果を鋭敏に反映する手法として,疾患バイオマーカー探索から薬剤開発まで広く用いられつつある.そこで本研究では,地域在住の更年期女性を対象に,既存の各種ホルモン値に加え血中メタボロームを網羅的に測定し,更年期障害のメタボロームプロファイリングを通じて,更年期障害の客観的評価法を見出すことを目的とする.また,更年期障害を有する女性は将来心血管疾患を発症するリスクが高いことが報告されており,大規模疫学研究データを用いて,将来的な疾患発症予測に関する検証を第二の目的とする.
    更年期障害は社会的に広く認知されかつ治療法もおおむね確立しているにも関わらず,本邦における更年期女性の医療機関受診率やホルモン補充療法の普及率は低い.その背景には,ホルモン値測定による卵巣機能の評価は診断の参考になるが,症状の感じ方・現れ方に個人差が大きく主観的であり,実地臨床において客観的判断が難しいとの課題がある.本研究により更年期女性の健康課題に対して従来とは異なる新しい発想のアプローチを行うことで,更年期症状の客観的評価や将来の疾患発症に対する早期介入が可能となり,一人でも多くの女性のより良い生涯と日本の男女共同参画社会実現の一助となることが期待される.

  • Integration of genomics and metabolomics for prevention of menopausal disorders

    2021.04
    -
    2023.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Early-Career Scientists , Principal investigator

Awards 【 Display / hide

  • The 90th Annual Meeting of Japanese Society for Hygiene, Young Investigator Award

    2022.03, Japanese Society for Hygiene, 閉経後女性の代謝プロファイルに対する出産経験の影響:鶴岡メタボロームコホート研究

    Type of Award: Award from Japanese society, conference, symposium, etc.

  • 2017 JSOG Best Paper Award (Women's Health section)

    2017.04, Japan Society of Obstetrics and Gynecology (JSOG), 閉経後女性におけるメタボリック症候群の血漿メタボローム・プロファイリング

    Type of Award: Award from Japanese society, conference, symposium, etc.

  • The 30th annual meeting of the Japan Society for Menopause and Women’s Health Best Presentation Award

    2015.11, Japan Society for Menopause and Women’s Health (JMWH), 閉経後女性におけるメタボリック症候群の血漿メタボローム解析:鶴岡メタボロームコホート研究

    Type of Award: Award from Japanese society, conference, symposium, etc.

  • Kameda Medican Center, The Best Resident Award (22nd)

    2010.03

 

Courses Taught 【 Display / hide

  • BIOSTATISTICS AND MEDICAL INFORMATICS

    2026

  • ENVIRONMENTAL AND OCCUPATIONAL HEALTH

    2026

  • EPIDEMIOLOGY AND PREVENTIVE MEDICINE

    2026

  • PUBLIC HEALTH 2 (ADVANCED)

    2026

  • PUBLIC HEALTH 2 (ADVANCED)

    2025

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Courses Previously Taught 【 Display / hide

  • 自主学習

    Keio University

    2018.04
    -
    2019.03

    Seminar, Lecturer outside of Keio, 3h, 5people

  • 医学統計・医療情報

    Keio University

    2018.04
    -
    2019.03

    Seminar, Lecturer outside of Keio, 3h, 110people

  • 医学統計・医療情報

    慶應義塾大学医学部

    2018.04
    -
    2019.03

  • 公衆衛生学

    慶應義塾大学医学部

    2018.04
    -
    2019.03

Educational Activities and Special Notes 【 Display / hide

  • 自主学習

    2019.04
    -
    2019.11

    , Lecture at Education Method and Practice

  • 公衆衛生学調査研究

    2018.10
    -
    2018.11

    , Special Affairs

  • 医学統計・医療情報

    2018.09
    -
    2018.11

    , Special Affairs

  • 自主学習

    2018.04
    -
    2018.11

    , Lecture at Education Method and Practice

 

Social Activities 【 Display / hide

  • 生理に伴う不調への対処と学校における啓発の必要性

    NPO法人日本トイレ研究所, 中学・高校向け授業 「みんなで知ろう 生理に伴う不調とケア」 研修会, 

    2024.08
  • 月経による健康課題と職場でできること

    NPO法人日本トイレ研究所, 第73回トイレラボ勉強会, 

    2024.04
  • 働く女性の健康課題解決へー企業は何をするべきか

    佐賀県、女性の活躍推進佐賀県会議, 働く女性のこころとからだケアセミナー, 

    2024.01
  • 男性も女性も知っておきたい女性の健康についてー妊娠・出産ー

    経済産業省, 教えよう!ココロ&カラダ 厚生企画室勉強会, 

    2023.12
  • 女性特有のからだの悩みとその対応について学ぼう

    日産自動車(株)横浜工場 安全健康管理課, 管理・監督者向けセミナー「女性の活躍と健康」, 

    2023.11

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Media Coverage 【 Display / hide

Committee Experiences 【 Display / hide

  • 2021.04
    -
    Present

    世話人, 日本産業衛生学会 就労女性健康研究会

  • 2020.11
    -
    Present

    代議員, 日本産業衛生学会

  • 2018.09
    -
    Present

    食養委員, 慶應義塾大学病院食養委員会