Overview
1) Epidemiological studies to examine the prevalence and incidence of dementia and cognitive impairment, not dementia (CIND)
2) Studies examining risk and protective factors for dementia and CIND
3) Behavioral genetics of aging and dementia with an emphasis on twin studies
4) Long term outcomes of traumatic brain injury
5) Oral health and cognition in later life
Current Appointments & Affiliations
Professor in Psychiatry and Behavioral Sciences
·
2021 - Present
Psychiatry & Behavioral Sciences, Behavioral Medicine & Neurosciences,
Psychiatry & Behavioral Sciences
Professor of Neurology
·
2020 - Present
Neurology, Behavioral Neurology,
Neurology
Faculty Network Member of the Duke Institute for Brain Sciences
·
2014 - Present
Duke Institute for Brain Sciences,
University Institutes and Centers
Recent Publications
High pesticide exposure events and subjective cognitive complaints among US farmers.
Journal Article Environ Res · March 15, 2026 BACKGROUND: Pesticides may contribute to cognitive impairment in older adults, but empirical data are limited. We investigated whether high pesticide exposure events (HPEEs) were associated with subjective cognitive complaints among older US farmers. METHO ... Full text Link to item CiteHistory of Cannabis Smoking and Subjective Cognitive Complaints in Older Women.
Journal Article Neuroepidemiology · January 8, 2026 INTRODUCTION: Cannabis use has been increasing in the USA, yet its potential long-term effects on neurocognitive outcomes remain unknown. We aimed to examine the association of the history of cannabis smoking with subjective cognitive complaints (SCC) in o ... Full text Link to item CiteHigh Pesticide Exposure Events and Olfactory Impairment Among US Farmers
Conference CHEMICAL SENSES · 2026 CiteRecent Grants
Pesticide Use and Markers of ADRD Neurodegeneration among US Farmers
ResearchPrincipal Investigator · Awarded by Michigan State University · 2025 - 2030National Health and Aging Trends Study
ResearchPrincipal Investigator · Awarded by Johns Hopkins University · 2019 - 2029Improving the lives of persons living with dementia and their families through person-centered measurement of home time
ResearchCo Investigator · Awarded by National Institute on Aging · 2021 - 2027View All Grants
Education
University of Arizona ·
1986
Ph.D.