Rooshna Mohsin, a PhD in public health student, was this year’s third-place winner in George Mason’s annual Three Minute Thesis (3MT) competition, a research communication competition for PhD candidates across the university. Competitors are judged on their ability to present the significance of their dissertation or thesis research using a single slide and within a strict three-minute time limit.
Mohsin offered a compelling presentation on dietary and social exposure to PFAS (Per- and polyfluoroalkyl substances), commonly known as forever chemicals, among Hispanic children.
“I found that animal-based foods were associated with higher levels of some PFAS, while taking part in free/reduced school-based meal programs were associated with lower levels. When analyzing associations between PFAS and vitamin D, we found some PFAS were associated with higher levels of vitamin D, which may imply interference of PFAS in vitamin D metabolism in the body,” Mohsin explained of her research’s key findings.
Her full work is entitled Balancing the Risks: Dietary and Social Predictors of PFAS Exposure and Associated Health Outcomes in Hispanic Children.
Mohsin intends to build upon her findings next steps by evaluating the associations between PFAS and cardio metabolic measures (blood pressure and cholesterol) in Hispanic children, which are pediatric measures of heart disease later in life.
The competition took place on November 7, 2025, and was organized by the Graduate Division of the Provost’s Office. PhD students from the College of Education and Human Development, College of Engineering and Computing, College of Humanities and Social Science, College of Public Health, and College of Science participated. A panel of eight judges evaluated the presentations on a diverse range of topics, including the integration of Gen-AI in K-12 classrooms and novel approaches to combating bacteria and biofilms.