Deborah Tate, PhD
Interim Director, Professor of Nutrition
dtate@unc.edu
919-966-7546
Deborah Tate is the interim director and a professor in the Department of Nutrition. She holds a joint appointment in the Department of Health Behavior and a faculty appointment at the Nutrition Research Institute. Dr. Tate is a behavioral scientist, receiving her Ph.D. in Clinical Psychology. Her research focuses on two main areas: (a) strategies for improving both short and long-term body weight regulation to reduce disease risks and (b) the development and translation of programs as alternatives to clinic-based care using digital and wearable technologies. She has been continuously funded in obesity, diabetes prevention and digital health intervention research by the National Institutes of Health since 2000 and is known internationally for her work in web and mobile interventions. Dr. Tate has numerous papers published in major nutrition and medical journals such as the Journal of the American Medical Association, the New England Journal of Medicine, JAMA-Internal Medicine, Obesity, the American Journal of Clinical Nutrition, Health Psychology, and others. Dr. Tate is faculty director of the UNC Weight Research Program, and for the Communications for Health Applications and Interventions (CHAI) Core a shared resource serving faculty in both the Nutrition Obesity Research Center and the Lineberger Comprehensive Cancer Center. She teaches a graduate-level course entitled “mHealth for Behavior Change”.
Dr. Tate conducted several of the first randomized trials using the Internet and new technologies to deliver behavioral treatments for obesity. She continues to conduct studies to determine which features of digital programs contribute to efficacy, how to use wearable and other passive data to inform tailoring, and what types of intervention messages and strategies work best for whom and in what contexts. Her work has focused on bringing greater specificity to digital intervention science and uses advanced intervention methodologies such as the Multiphase Optimization Strategy, multiple randomized trials (MRT) and adaptive (SMART) designs to optimize digital obesity prevention and treatment interventions. Her recent work has focused on precision public health messaging for just-in-time-adaptive interventions and precision nutrition and obesity approaches which offer high degrees of individual tailoring.
Addison Lewis
Research Assistant, Tate Lab
Addison joined the NRI in December 2023 as a research technician for All of Us (AoU) and Nutrition for Precision Health (NPH). While growing up in Hickory, NC, Addison developed a love for science in medicine, leading her to graduate from NCSU in 2023 with a BS in Human Biology. Addison hopes to continue onto PA school one day but is excited to gain clinical lab experience at NRI. Outside of work and school, Addison enjoys playing with her schnauzer, crocheting, and cooking.
Kate Machen
Research Assistant, Tate Lab
Katherine "Kate" Machen received her Bachelor of Science degree with a Cell and Molecular Biology concentration and a Chemistry minor from Appalachian State University in 2019. The following fall, her studies continued with neurobiology research as a master's student at Appalachian State University. In May 2022, Kate graduated from the graduate program, receiving a Master of Science degree. As a constant learner, she has recently taken a research assistant position at the NRI to expand her knowledge and interest in all things biological.
Chrysa Mahoney, MS, RD, LDN
Research Assistant, Tate Lab
Chrysa Mahoney is a Research Assistant at the University of North Carolina at Chapel Hill’s Nutrition Research Institute (NRI). She joined the NRI in 2023 to work with Dr. Tate on the All of Us (AoU) Research Program and the Nutrition for Precision Health (NPH) study supported by the US National Institutes of Health (NIH). Chrysa has 20 years of experience in the pharmaceutical industry in a variety of therapeutic areas and especially enjoyed working on therapies for T2DM and obesity.
Julie Stegall
Project Manager, Tate Lab
Julie joined the NRI in 2009 with Dr. Carol Cheatham’s Nutrition & Cognition Lab where she helped launch some of the first human studies completed on the NCRC. In her time with the NRI, she has had the pleasure of working with Dr. Philip May on his Fetal Alcohol Spectrum Disorders (FASDs) research and founding director, Dr. Steven Zeisel, on his choline biomarker study. She has coordinated studies with babies, toddlers, school age children, and adults. Julie earned a BA in Journalism and Mass Communications and a Masters in Social Work from the University of North Carolina at Chapel Hill. Julie is currently working on multiple projects, including the Nutrition for Precision Health study. After living in Chapel Hill, Boston, Niger, and Asheville, Julie is a returned Kannapolis native who has enjoyed watching the area’s residents grow and learn in partnership with the research being conducted.
All of Us Research Program partners with the UNC Nutrition Research Institute
The All of Us Research Program is inviting one million people across the U.S. to help build one of the most diverse health databases in history. We welcome participants from all backgrounds. Researchers will use the data to learn how our biology, lifestyle, and...
The UNC Nutrition Research Institute welcomes Deborah Tate, PhD, as interim director
Deborah F. Tate, PhD, became interim director of the UNC Nutrition Research Institute on April 1, having been named by Vice Chancellor for Research Penny Gordon-Larsen. Tate follows Stephen D. Hursting, PhD, MPH, who served the NRI as director from 2021 to 2024....
International Women’s Day: NRI Women Speak on Pivotal Moments, Role Models, and Unique Contributions
As we commemorate International Women's Day, we reflect on pivotal moments that have shaped the careers of the women of the NRI. Their stories highlight the impact of motherhood, career transitions, mentorship, and cultural diversity on professional success. From...