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Nicola McKeown, PhD: Principal Investigator

Dr. NicolaNM McKeown is an Associate Professor for the Nutritional Epidemiology Program at the Friedman School of Nutrition Science and Policy and a scientist at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University. She is internationally renowned for her work on the role of whole grains in promoting health. Dr. McKeown’s early work on the relationship between dietary carbohydrates and lifestyle factors in the development of insulin resistance and metabolic syndrome led to an increased focus on whole grains. She has made significant contributions to our understanding of the impact of whole grain intake on abdominal adiposity, weight gain, metabolic syndrome, and CVD risk. She was the first investigator to robustly characterize the relationship between whole grain intake and reduced visceral adiposity in a large cohort. Her work now employs both large observational datasets and controlled intervention studies to examine the effects of whole grains on blood biomarkers and gut microbiota. She is also leading an innovative new project to develop a fiber evidence map with the goal of compiling and synthesizing the current and emerging body of literature linking dietary fibers to health outcomes. She is a scientific advisor to the Whole Grains Council, serves on the editorial board of Nutrition Today, and is a fellow of the Obesity Society.  Dr. McKeown received a BS in Human Nutrition from the University of Ulster in Northern Ireland and a PhD in Nutritional Epidemiology from the University of Cambridge in England.


Sara Folta, PhD: Co-Investigator

Sara Folta, Ph.D.Sara Folta’s research interests focus on public health nutrition, or the utilization of community-based strategies for improving dietary intake, physical activity, and body composition. She has particular expertise in behavioral psychology, communications, and qualitative methods. A major line of Folta’s research involves community-based interventions to improve heart health among women. A second area of research includes behavioral strategies to improve health and well-being among older adults, particularly through the development of physical activity interventions. Folta’s third line of research involves community-based interventions for obesity prevention among children. These studies, in which theory-based communications strategies were a major component, are notable for the use of the eco-social model in which multiple levels (individual-organization-community-policy) are targeted.


Alice H. Lichtenstein, D.Sc.: Co-Investigator

Alice Lichtenstein, Ph.D.Dr. Lichtenstein is the Stanley N. Gershoff Professor of Nutrition Science and Policy at the Friedman School, and Director of the Cardiovascular Nutrition Laboratory and Senior Scientist at the Jean Mayer USDA Human Nutrition Research Center on Aging, at Tufts University. She holds secondary appointments as Professor of Medicine at Tufts Medical Center, and an honorary doctoral degree from the University of Eastern Finland. Dr. Lichtenstein’s research group focuses on assessing the interplay between diet and heart disease risk factors.  Dr. Lichtenstein currently serves as an Associate Editor of the Journal of Lipid Research and Executive Editor of the Tufts Health and Nutrition Letter. She served on the 2000 Dietary Guidelines Advisory Committee and as vice-chair of the 2015 Dietary Guidelines Advisory Committee. Dr. Lichtenstein was vice-chair of the 2013 American Heart Association (AHA)/American College of Cardiology (ACC) Guideline on the Treatment of Blood Cholesterol to Reduce Atherosclerotic Cardiovascular Risk in Adults and member of the AHA/ACC Guideline on Lifestyle Management to Reduce Cardiovascular Risk. She received the 2006 Robert H. Herman Memorial Award in Clinical Nutrition from the American Society for Nutrition, 2008 Women’s Mentoring Award from the AHA, Excellence in Dietary Guidance Award from the American Public Health Association, and the David Kritchevsky Career Achievement Award in Nutrition from the American Society for Nutrition. This past year she received the Ralph Holman Lifetime Achievement Award from the American Oil Chemist Society. Dr. Lichtenstein is a member and was past-chair of the AHA Nutrition Committee and is currently a member of the Food and Nutrition Board of the National Academies of Sciences, Engineering, and Medicine.


Christina Economos, PhD: Co-Investigator

Christina Economos, Ph.D.Christina Economos, PhD, is a Professor and the New Balance Chair in Childhood Nutrition at the Friedman School of Nutrition Science and Policy and Medical School at Tufts University. She is also the co-Founder and Director of ChildObesity180, a unique organization that brings together leaders from diverse disciplines to generate urgency, and find solutions to the childhood obesity epidemic. As the principal investigator of large-scale research studies, Dr. Economos has generated over $50 million in funding, has authored more than 140 scientific publications and speaks frequently at scientific and professional meetings. At ChildObesity180 she develops, implements, evaluates, and scales high-impact obesity prevention initiatives.  Dr. Economos is involved in national obesity and public health activities and has served on four National Academies of Sciences, Engineering, and Medicine committees. In addition, she serves on the American Heart Association’s Nutrition Council on Lifestyle and Cardiometabolic Health.


Gail Rogers, MA:  Statistician and Electronic Data Capture (EDC) Manager

Gail Rogers, M.A.

Gail is a Sr. Statistician at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University and Instructor at the Friedman School of Nutrition Science and Policy. She received her B.A. in Psychology from Gordon College and a M.A. in Biostatistics from Boston University. Her work includes analysis of survey data, large scale observational cohorts, and intervention studies with an emphasis on longitudinal analysis of cardiometabolic outcomes and dietary exposures. In addition to ADAPT, Gail’s current projects include supervising the management of nutrition data for the Framingham Heart Study and identifying patterns of water intake from beverages and food for optimum hydration and maintenance of cardiometabolic health.


Kara Livingston Staffier, MPH:  Sr. Project & Data Manager

Kara Livingston Staffier, MPHKara received a BA in English from the College of the Holy Cross and an MPH in Epidemiology of Microbial Diseases from Yale University.  Before coming to Tufts, Kara completed an Applied Epidemiology Fellowship with the Centers for Disease Control and the Council for State & Territorial Epidemiologists at the NYC Department of Health & Mental Hygiene.  While there, she conducted research on vaccine effectiveness and worked in vaccine preventable disease surveillance.  At Tufts, she is a Sr. Project & Data Manager in the Nutritional Epidemiology program at the Jean Mayer USDA HNRCA.  She supports proposal and protocol development, and manages data, study logistics, and Institutional Review Board applications.  Her other projects, in addition to ADAPT, include developing a comprehensive database linking dietary fiber to human health outcomes and managing data from the Framingham Heart Study.


Micaela Karlsen, PhD, MSPH

Micaela Karlsen, MSPHMicaela received her PhD from Tufts in 2018, where she completed her dissertation, entitled “Diet Quality and Predictors of Long-Term Adherence to Popular Diets: Using Data from The ADAPT Study.” She is currently the Sr. Director of Research at the American College of Lifestyle Medicine.






Remco Chang, PhD (Dept. of Computer Science, School of Engineering at Tufts University):  Dr. Chang has expertise in using machine learning techniques to discover data patterns and data visualization

Christian Peters, PhD (Friedman School of Nutrition Science and Policy at Tufts University):  Dr. Peters has expertise in ecological sustainability, in particular how changes to the food system can impact sustainability and how dietary preferences may affect land use

Paul Jacques, DSc (Nutritional Epidemiology, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University): Dr. Jacques has expertise in epidemiology and statistical analysis, diet and chronic disease risk.