Dutton Gareth PhDBiosketch & Research Interests 

Gareth Dutton, PhD, is an Associate Professor of Medicine in the UAB Division of Preventive Medicine. Prior to joining UAB in 2011, Dr. Dutton was an Assistant Professor in the Department of Medical Humanities and Social Sciences at the Florida State University College of Medicine.  Dr. Dutton received his PhD in clinical psychology with an emphasis in behavioral medicine from Louisiana State University.  He completed his pre-doctoral clinical internship at Brown University. Dr. Dutton’s research is focused on the development and evaluation of lifestyle interventions for weight loss and weight loss maintenance. This work includes identification of variables associated with treatment response, including individual factors (e.g., self-efficacy, goal focus, demographic characteristics) and program factors (e.g., size of treatment groups, schedule of treatment contacts, modality of treatment delivery).

Dr. Dutton previously received a K23 career development award from NIDDK to examine alternative treatment schedules to improve weight loss maintenance  He has current funding from NIDDK (R01 and R03) to complete observational and behavioral trials similarly focused on participant and program characteristics that promote better outcomes in weight loss interventions.  Much of his clinical research is also focused on lifestyle interventions targeting diverse and disadvantaged populations as well as programs that can be practically implemented in ‘real world’ clinical and community settings.  


The purpose of this systematic review was to evaluate, synthesize, and interpret findings from recent randomized controlled trials (RCTs) of dietary and lifestyle weight loss interventions examining the effects of 1) diet composition, 2) use of food provision, and 3) modality of treatment delivery on weight loss.  Trials comparing different dietary approaches indicated that reducing carbohydrate intake promoted greater initial weight loss than other approaches but did not appear to significantly improve long-term outcomes.  Food provision appears to enhance adherence to reduction in energy intake and produce greater initial weight losses. The long-term benefits of food provision are less clear.  Trials comparing alternative treatment modalities suggest that phone-based treatment produce short- and long-term weight reductions equivalent to face-to-face interventions. The use of Internet and mobile technologies are associated with smaller reductions in body weight than face-to-face interventions. Based on this review, clinical implications and future research directions are provided.