
Benjamin Levine
PhD student in the Division of Nutritional Sciences
Advisor: Brett Loman, PhD, RD, Assistant Professor, Department of Animal Sciences, PNI Affiliate
Research area: His research investigates how dietary and psychological stress exposures shape gastrointestinal motility via host-microbe interactions.
He attended the 2025 International Scientific Association for Probiotics and Prebiotics (ISAPP) Annual Meeting in Banff, Canada. There, he presented data from a recently concluded clinical trial funded by the Personalized Nutrition Initiative. His presentation was titled, “Gastrointestinal motility responses to acute whole and refined-grain consumption are sexually dimorphic and mediate postprandial metabolism.”

Da Eun Kim
PhD student in the Department of Agricultural and Consumer Economics
Da Eun holds an M.A. in Development Policy from the KDI School of Public Policy and Management in South Korea and a B.S. in Agricultural Economics from North Dakota State University. Prior to her doctoral studies, she worked as a project associate at the Food and Agriculture Organization of the United Nations.
Advisor: Maria Kalaitzandonakes, PhD, Department of Agricultural and Consumer Economics, PNI Affiliate
Research area: Her research focuses on consumer behavior and the intersection of food choice, health, and nutrition. She leverages both experimental and observational data to understand how consumers respond to emerging food innovations in a dynamic marketplace.
He attended and presented at the NUTRITON 2025 conference in Orlando, Florida, in May 2025. Her poster is titled “Differentiating Added-Protein Preferences: Consumer Demand for Added-Protein Across Product Types”.
Haeley Alaina Peters
PhD student in the Department of Health and Kinesiology
Haeley, originally from Dahlgren, Illinois, is a second-year Community Health PhD student. She holds two bachelor’s degrees from Illinois: a Bachelor of Science in Interdisciplinary Health Sciences with a concentration in Health and Diversity and a Bachelor of Arts in Sociology. She graduated with high honors and highest distinction. Before her graduate studies, she worked as a Certified Clinical Medical Assistant in various healthcare settings, including long-term care, plastic surgery, and fertility.
Advisor: Minakshi Raj, PhD, MPH, Assistant Professor, Department of Health and Kinesiology, PNI Affiliate
Research area: She is a member of the Aging, Caregiving, and Technology Lab, with research focusing on nutrition, dietary assessment, and cultural inclusivity in healthcare. She plans to continue her research and pursue a career as a professor after graduation.
She attended and presented at the NUTRITON 2025 conference in Orlando, Florida, in May 2025. Her poster is titled “Exploring Variation in Nutrition Assessment Tools Amongst Practicing Registered Dietitians”.

Rafael Guimarães
Ph.D. student in Community Health in the Department of Health and Kinesiology
He holds degrees in Nutrition and Mechatronic Engineering, an MBA in Project Management, and a master’s in Health Technologies.
Advisor: Kristen DiFilippo, PhD, RD, Teaching Assistant Professor, Department of Health & Kinesiology
Research area: His research focuses on mobile health (mHealth) technologies to support dietary behavior change and chronic disease management among food-insecure populations. He currently coordinates the Aging and Diversity Lab and conducts research in Brazil on the barriers faced by food-insecure individuals when using health apps.
He attended and presented at the NUTRITON 2025 conference in Orlando, Florida, in May 2025. His poster is titled “The Role of Nutrition Apps in Improving and Managing Diabetes and Hypertension in a Food-Insecure Population in Brazil”.

Benjamin Levine
PhD student in the Division of Nutritional Sciences
Research area: Investigate how stress and diet interact with the enteric microbiota to influence communication along the gut-brain axis.
Advisor: Brett Loman, PhD, Assistant Professor, Department of Animal Sciences, PNI Affiliate
He attended and presented at the NIH Office of Dietary Supplements: Science of Resilience Workshop in Washington, DC in September 2024. His presentation was titled “Prebiotic dietary fibers confer resilience to psychological stress and stress-induced intestinal dysmotility”.
Ananthan Nambiar
PhD student in the Department of Bioengineering
Research area: Computational modeling focused on deep learning models for protein science, microbiomes, and genomics.
Advisor: Sergei Maslov, PhD, Professor, Department of Bioengineering, PNI Affiliate
He attended and presented at the International Conference on Intelligent Systems for Molecular Biology in Montreal, Canada in July 2024. His presentation was titled “MC-Funcformer: A foundational model of microbial community metabolism.”
Haeley Alaina Peters
PhD student in the Department of Health and Kinesiology
Research area: Nutritional composition of culturally tailored meals compares to American Diabetes Association guidelines and their health effects.
Advisor: Minakshi Raj, PhD, MPH, Assistant Professor, Department of Health and Kinesiology, PNI Affiliate
She attended and presented at the NUTRITON 2024 conference in Chicago, Illinois in June 2024. Her presentation was titled “Culturally Tailored Dietary Recommendations for South Asians with Diabetes or Heart Disease and Their Caregivers: Findings From Two Workshops.”
Shreya Verma
PhD student in the Department of Health and Kinesiology
Research area: Building predictive machine learning models for cognitive outcome forecasting based on nutrition and physical activity data, to inform personalized behavioral interventions for improved cognitive health and well-being.
Advisor: Naiman A. Khan, PhD, RD, Associate Professor, Department of Health and Kinesiology, PNI Affiliate
She attended Machine Learning Week in Phoenix, Arizona in June 2024.