Tiffany Stewart, Ph.D.

Dudley & Beverly Coates Endowed Professor
Director, Behavior Technology Laboratory: Eating Disorders & Obesity/ Co-Founder and Chief Scientific Officer, Body Evolution Technologies

Associate Professor


(225) 763-2554
(225) 763-3022
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Ph.D., Louisiana State University, Baton Rouge, LA, 2002, Clinical Psychology
M.A., Clinical Psychology, Louisiana State University, Baton Rouge, LA, 1999, Clinical Psychology
B.S., Psychology, Florida State University, Tallahassee, FL, 1996, Psychology

Laboratory Website


With the dawn of new e-health technologies and population health research models to reach populations who don’t have access to or who are unable to participate in clinical programs and/or healthcare, Dr. Stewart has been a pioneer in the development and testing e-health technologies and community-based programs in order to disseminate prevention and treatment efforts to large populations for eating disorders, obesity, and body image disturbance. Dr. Stewart is an Associate Professor, the Dudley & Beverly Coates Endowed Professor, and the Director of the Behavior Technology Laboratory: Eating Disorders and Obesity, at Pennington Biomedical Research Center, and serves as Founder and CSO of Body Evolution Technologies Inc., a VC-funded entrepreneurial venture dedicated to Translational Science: taking e-health assessment, prevention, and treatment technologies from bench to bedside. Dr. Stewart has spearheaded unique, large, multi-site prevention and treatment studies that have included the development and deployment of novel technologies for behavior change. Her current projects include a NIH funded R01 investigating the prevention of eating disorders in female collegiate athletes across four sites, called the Female Athlete Body Program (FAB), ongoing studies examining the efficacy and dissemination of a weight management technology program, called Army H.E.A.L.T.H. for U.S. Army Soldiers, Families, and Veterans, and ongoing technology development projects, including body image and eating disorder assessment applications and eating disorder and obesity intervention platforms and applications.


Stewart, T.M., Williamson, D.A., Smeets, M.A.M. & Greenway, F.L. (2000). A Computerized Assessment of Body Image: A Psychometric Study. Obesity Research, 9(1), 43-50. PMCID: PMC2743122

Stewart, T.M., Williamson, D.A., & White, M. (2002). Rigid and Flexible Dieting: Association with BMI and Eating Disorder Symptoms. Appetite 38, 39-44.

Stewart, T.M. & Williamson, D.A. (2004). Multidisciplinary Treatment of Eating Disorders I: Structure and Costs of Treatment. Behavior Modification, 28(6), 812-830.

Stewart, T.M. & Williamson, D.A. (2004). Multidisciplinary Treatment of Eating Disorders II: Primary Goals and Content of Treatment, A Mindful Approach. Behavior Modification, 28(6), 831-853.

Stewart, T.M. (2004). Light on Body Image Treatment: Acceptance through Mindfulness. Behavior Modification, 28(6), 783-811.

Stewart, T. M.(2007). Genes and binge eating: Are we missing the target? Obesity Management, 2(6), 223-226.

Williamson, D.A., Copeland, A.L., Anton, S.D., Champagne, C., Han, H., Lewis, L., Martin, C., Newton, R.L., Sothern, M., Stewart, T., & Ryan, D. (2007). Wise Mind Project: A School-Based Environmental Approach for Preventing Weight Gain in Children. Obesity, 15(4), 906-917.

Stewart, T.M., May, S., Allen, H.R., Bathalon, G.P., LaVergne, G., Sigrist, L., Ryan, D.H., & Williamson, D.A. (2008). Development of an Internet/Population-based weight management program for the U.S. Army. Journal of Diabetes Science and Technology 2(1), 116-126. PMCID: PMC2769719

Stewart, T. M., Allen, H. R., Han, H. & Williamson, D. A. The Development of the Body Morph Assessment Version 2.0 (BMA 2.0): Tests of Reliability and Validity. (2009). Body Image 6(2), 67-94. PMCID: PMC2743122

Stewart, T.M., Bachand, A., Han, H., Ryan, D., Bray, G.A., & Williamson, D.A. (2010). Body image changes associated with participation in an intensive lifestyle weight loss intervention. Obesity. NIHMSID: NIHMS250514

Stewart, T.M., Han, H., Ryan, D.H., Newton, R.L. Jr., & Williamson, D.A. (2011). H.E.A.L.T.H.: Efficacy of an Internet/Population-based Behavioral Weight Management Program for the U.S. Army. Journal of Diabetes Science and Technology 5, 178-187. PMCID: PMC3045224

Stewart, T.M., Bhapkar, M., Das, S., Galan, K., Martin, C.K., McAdams, L., Pieper, C., Redman, L., Roberts, S., Stein, R.I., Rochon, J., & Williamson, D.A., for the CALERIE Study Group (2013). Comprehensive assessment of Long-Term effects of reducing intake of energy Phase 2 (CALERIE Phase 2): Screening and Recruitment: Methods and Results. Contemporary Clinical Trials, 34 (1), 10-20. PMCID: PMC3525758

Becker, C., Hill, K., Greif, R., Han, H., & Stewart, T.M. (2013). Reducing Self-Objectification: Are dissonance-based methods a possible approach? Journal of Eating Disorders, 1:10,1-10. DOI: 10.1186/2050-2974-1-10.

Becker, C.B., Plasencia, M., Kilpela, L.S., Briggs, M., & Stewart, T.M. (2014). Changing the course of comorbid eating disorders and depression: What is the role of public health interventions in targeting shared risk factors? Journal of Eating Disorders, 2 (15), 1-14.

Stewart, T.M., Plasencia, M., Han, H., Jackson, H., & Becker, C.B. (2014). Moderators and predictors of response to eating disorder risk factor reduction programs in collegiate female athletes. Eating Disorders in Sport, special issue in Psychology of Sport & Exercise (PSE).

Teyhen, D.S., McClain, J., Stewart, T.M., Neal, D.N., Thorndike, F., Aldag, M., Edinborough, E., Levine, B., Ghanadian, J., Kinn, J., Parramore, D., Trabosh, V., Haught, A., & Kunkler, K. (2014). Leveraging technology: Creating & sustaining changes for health, Telemedicine and e-Health, in press.

Kilpela, L., Becker, C.B., Wesley, N., & Stewart, T.M. (2014). Body Image in Adult Women: Moving Beyond the Younger Years. Advances in Eating Disorders, in press.

Eric Ravussin, Leanne M. Redman, James Rochon, Sai Krupa Das, Luigi Fontana, William E. Kraus, Sergei Romashkan, Donald A. Williamson, Simin N. Meydani, Dennis T. Villareal, Steven R. Smith, Richard I. Stein, Tammy M. Scott4, Tiffany M. Stewart, Edward Saltzman, Samuel Klein, Manju Bhapkar, Corby K. Martin1, John O. Holloszy, Cheryl H. Gilhooly, Evan C. Hadley, Susan B. Roberts for the CALERIE Study Group. (2015). A two-year randomized controlled trial of human caloric restriction: feasibility and effects on predictors of health span and longevity. Journal of Gerontology: Medical Sciences, 10, 1-8.

Martin, C. K., Bhapkar, B., Pittas, A. G., Pieper, C. F., Das, S. K., Williamson, D. A., Scott, T., Redman, L. M., Stein, R., Gilhooly, C. H., Stewart, T., Robinson, L., Roberts, S. B. for the CALERIE Phase 2 Study Group. (2016). Effect of calorie restriction on mood, quality of life, sleep, and sexual function in healthy nonobese adults: The CALERIE 2 randomized clinical trial. JAMA Intern Med, 176(6), 743-752. PMID: 27136347.

Stewart, T.M., Beyl, R., Pollard, T., Wesley, N., Kilpela, L.S., Becker, C.B. The Female Athlete Body (FAB) Study: Rationale, Design, and Baseline Characteristics. International Journal of Methods in Psychiatric Research. Under Review. ^ top