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Karina is a Ph.D. student in Human Nutrition, working with Dr. Kimberly O'Brien. She earned her B.Sc. in Dietetics from McGill University and obtained her Registered Dietitian license in Canada. After completing one year of clinical practice, her strong interest in nutrition and preventative care led her to pursue a thesis-based M.Sc. in Human Nutrition, where she got inspired by the influential role of the gut microbiota in health. In Dr. O’Brien’s lab, Karina investigates

Yuke is a second-year PhD student in Human Nutrition. She earned a B.S. in Clinical Nutrition and a B.A. in Psychology from the University of California, Davis, and completed her M.S. in Human Nutrition at the Institute of Human Nutrition at Columbia University. After completing her dietetic internship at the UC Davis Medical Center, she became a Registered Dietitian. She is currently working in Dr. Kimberly O’Brien’s lab, where her research focuses on vitamin D

Sadie is a Ph.D. student in Nutrition for Metabolic Health, working with Dr. Meng Wang, and a Graduate School Dean's Scholar. She earned a B.S. in Biological Sciences from Cornell, with a concentration in Genetics, Genomics, and Development. Sadie is broadly interested in the metabolic origins of DNA damage and in what happens when the pathways that protect against it fail. In Dr. Meng Wang's lab, she studies formaldehyde as an endogenous source of DNA

Felicia Chan is an M.S. student in the Nutrition + Dietetics track. She earned dual degrees in Nutrition and Dietetics and in Nutrition, Fitness, and Health, with a minor in Music, from Purdue University in 2025. During her undergraduate studies, Felicia worked as a Nutrition Coach, providing clients with guidance on goal setting and sustainable lifestyle changes. She also gained experience in clinical research and scientific writing as a Laboratory Technician. At Cornell, Felicia works

My work takes a behavioral ecology perspective on understanding the reciprocal relationships between environments, brains, and behaviors in humans.  Specifically, my lab, the Life History Lab, looks at how social and physical affordances in development and in the present impact neural sensitivity to rewards and punishment, vigilance, cognitive load, and stress as well positive stimuli like social support and contemplative practices. These sensitivities can encourage certain behaviors and be influenced by them, creating emergent ecologies

I received my B.S. in Nutritional Sciences from Cornell University in 1991 and completed a dietetic internship at Emory University in Atlanta, GA in 1992. I started my clinical career practicing as a registered dietitian focusing on the nutritional care of oncology, general medicine, and geriatric patient populations in the acute and long-term care settings. I furthered my clinical training at the Geisel School of Medicine at Dartmouth, graduating in 2001 with an M.D. degree

I am an Associate Professor in the Division of Nutritional Sciences at Cornell University. I received a B.S. in chemistry from Butler University in 2000 and a Ph.D. in Biochemistry, Molecular and Cell Biology from Cornell University in 2007.

My laboratory studies gene-nutrient interactions that lead to development of disease. It is clear that what we eat can be associated with disease onset, and some individuals are more likely to be affected based on certain genetic