Liadh Simmins
Liadh Timmins, PhD
Columbia University Mailman School of Public Health - Postdoctoral Research Scientist
PhD, Psychology, King’s College London
MSc, Psychology, Trinity College Dublin
BA, Psychology, Maynooth University
Research Interests
Minority stress, LGBT+ health, LGBT+ healthcare, Sexual orientation, Gender identity
Liadh Timmins is a postdoctoral research scientist in Columbia University’s Department of Epidemiology. They are a psychology researcher by training and they specialize in minority stress, LGBT+ health and healthcare, and the psychology of sexual orientation and gender identity. Dr. Timmins employs a variety of research methods including quantitative surveys, qualitative interviews and computerized experiments to better understand the experiences and health needs of marginalized populations and improve health and healthcare in these groups. Dr. Timmins also has a keen research interest in examining the underlying phenomena that sexual orientation and gender identity comprise.

Their current interests include the impact of intersectional minority stress and contextual factors on HIV and other health in LGBT+ people of color.


Timmins L, Schneider JA, Chen YT, Pagkas-Bather J, Kim B, Moody RL, Al-Ajlouni YA, Lee F, Koli K, Durrell M, Eavou R, Hanson H, Park SH, Duncan DT (2022).
COVID-19 stressors and symptoms of depression and anxiety among Black cisgender sexual minority men and Black transgender women during the initial peak of the COVID-19 pandemic
Social Psychiatry and Psychiatric Epidemiology [Epub 2022 Apr 22]. doi: 10.1007/s00127-022-02282-2. PMCID: PMC9030680.

Moody RL, Chen YT, Schneider JA, Knox J, Timmins L, Hanson H, Koli K, Durrell M, Dehlin J, Eavou R, Martins SS, Duncan DT (2022).
Polysubstance use in a community sample of Black cisgender sexual minority men and transgender women in Chicago during initial COVID-19 pandemic peak
Substance Abuse Treatment Prevention and Policy, 17 (1), 4. doi: 10.1186/s13011-022-00433-x. PMCID: PMC8796750.

Dubin S, Reisner S, Schrimshaw EW, Radix A, Khan A, Harry-Hernandez S, Zweig SA, Timmins L, Duncan DT (2021).
Public restrooms in neighborhoods and public spaces: A qualitative study of transgender and nonbinary adults in New York City
Sexuality Research and Social Policy, 18, 1002-1012. doi: 10.1007/s13178-020-00504-3.

Chen YT, Duncan DT, Del Vecchio N, Timmins L, Pagkas-Bather J, Lacap S, Hotton A, Knox J, Hanson H, Koli K, Durrell M, Dehlin J, Schneider JA (2021).
COVID-19-related stressors, sex behaviors, and HIV status neutral care among Black men who have sex with men and transgender women in Chicago, USA
Journal of Acquired Immune Deficiency Syndromes, 88 (3), 261-271. doi: 10.1097/QAI.0000000000002770. PMCID: PMC8518204.

Timmins L, Schneider JA, Chen YT, Goedel WC, Brewer R, Callander D, Knox J, Eavou R, Hanson H, Duncan DT (2021).
Sexual identity, sexual behavior and pre-exposure prophylaxis in Black cisgender sexual minority men: The N2 Cohort Study in Chicago
AIDS and Behavior, 25 (10), 3327-3336. doi: 10.1007/s10461-021-03246-4. PMCID: PMC8419005.

Dr. Timmins' Google Scholar Profile
Selected Press