Portrait of Peiyao Zhu

Peiyao Zhu

PhD Candidate in Epidemiologic Science · University of Michigan

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My research focuses on how social and biological factors—such as education, neighborhood quality, and social isolation—influence cognitive aging and dementia risk, using large population-based datasets from both the U.S. and international settings.

Education

Aug 2025 — Present

PhD in Epidemiologic Science

Department of Epidemiology, School of Public Health

University of Michigan · Ann Arbor, MI, USA

Aug 2021 — Apr 2023

Master of Public Health in Epidemiology

Certificate in Social Epidemiology · Department of Epidemiology, School of Public Health

University of Michigan · Ann Arbor, MI, USA

Aug 2016 — May 2020

Bachelor of Arts in Health and Human Physiology

University of Iowa · Iowa City, IA, USA

Research & Work Experience

May 2023 — Present

Research Specialist / Graduate Research Assistant

University of Michigan

Department of Epidemiology, School of Public Health · Institute for Social Research (ISR)

Study biological, social, and environmental determinants of cognitive aging and dementia risk using the U.S. Health and Retirement Study (HRS) and international partner datasets, with analyses spanning inflammation, epigenetic aging, neighborhood context, cancer survivorship, cash transfer policies, and social isolation.

Jan 2023 — Apr 2023

Research Assistant II

University of Michigan

Department of Epidemiology, School of Public Health

Investigated social determinants of racial disparities in functional aging among older cancer survivors, integrating data from the HRS, the SEER Program, and the U.S. Census.

Aug 2022 — Apr 2023

Research Assistant

University of Michigan

Department of Epidemiology, School of Public Health

Investigated the social determinants of COVID-19 and influenza vaccine hesitancy in the U.S., emphasizing demographic, cultural, and political correlates.

May 2022 — Jul 2022

Research Analyst

Ben-Gurion University of the Negev

Beer Sheva / Tel Aviv, Israel

Examined socioeconomic and social-group disparities in COVID-19 vaccination uptake using national data from the Israel Ministry of Health.

Internship & Work Experience

Jul 2020 — Jan 2021

Quantitative / Qualitative Analyst

Kantar Health

Shanghai, China

Supported healthcare market research and consulting for global pharmaceutical clients through primary data collection, secondary research, and quantitative analysis — producing bilingual reports and decks for internal and client-facing audiences.

May 2019 — Aug 2019

Researcher

Gimema Hematology Research Center

Rome, Italy

Conducted a systematic literature review on hematologic malignancies — synthesizing clinical outcomes, patient-reported outcomes, and quality-of-life measures — and collected, analyzed, and visualized clinical research data to support multi-institutional studies and publication.

Publications

2024
2025

Associations of perceived neighborhood factors and Alzheimer’s disease polygenic score with cognition: evidence from the Health and Retirement Study.

Ware EB*, Zhu P*, Noppert G, Fu M, Benbow M, Kobayashi LC, Ryan LH, Bakulski KM.

PLOS ONE. 2025;20(11):e0336403.

2025

DNA methylation age acceleration mediates the relationship between systemic inflammation and cognitive impairment.

Higgins Tejera C*, Zhu P*, Ware EB, Hicken MT, Zawistowski M, Kobayashi LC, Seblova D, Manly J, Mukherjee B, Bakulski KM.

Epigenomics. 2025;1–11.

Under review

Social engagement, formal education, and cognitive outcomes among older adults in India: a longitudinal population-based study.

Zhu P, Nichols E, Angrisani M, Gross AL, Lee J, Kobayashi LC.

Under review

Exploring contextual determinants of the Older Person’s Grant expenditure and aging health.

Chang H, Jock J*, Zhu P*, Wagner R, Fleming P, Tollman S, Kobayashi LC.

* Co-first author / contributed equally.

Conference Presentations

2025

Social isolation and cognitive function and decline in a population-based longitudinal study of aging in India, overall and by education.

Society for Epidemiologic Research (SER) Annual Meeting

Boston, MA

Awards & Fellowships

2022

Gelman Global Scholars Program & Blumenthal Fund Award

Office of Global Public Health, University of Michigan

2022

Internship Funding Recipient

Department of Epidemiology, University of Michigan

2025

Tuition Fellowship — Emotional Well-Being and Physical Health Program

Dept. of Social & Behavioral Sciences, Harvard T.H. Chan School of Public Health; Behavioural Science & Health, University College London