Deirdre K. Tobias, ScD
Assistant Professor of Medicine, Harvard Medical School
Associate Epidemiologist, Brigham and Women’s Hospital
dtobias@bwh.harvard.edu
Dr. Tobias is a nutrition and obesity epidemiologist and Assistant Professor at the Brigham and Women’s Hospital and Harvard Medical School. Dr. Tobias received her doctorate in nutrition epidemiology at the Harvard TH Chan School of Public Health and completed her postdoctoral fellowship under the mentorship of Dr. Frank Hu. Her primary research interests include identifying dietary and lifestyle risk factors for prevention of obesity-related chronic diseases, including diabetes and cancer. She holds a secondary faculty appointment at the Harvard TH Chan School of Public Health and is co-instructor for nutrition epidemiology.
BA: College of the Holy Cross
SM: Harvard School of Public Health
ScD: Harvard School of Public Health
Full Listing of Publications
- Physical activity before and after cancer diagnosis and mortality risk in three large prospective cohorts October 8, 2024CONCLUSIONS: Remaining active pre- and post-diagnosis and becoming active post-diagnosis may be associated with improvements in cancer survival, however, research is needed across diverse cancer populations.Cami N Christopher
- Effects of Nonnutritive Sweeteners on the BMI of Children and Adolescents: A Systematic Review and Meta-Analysis of Randomized Controlled Trials and Prospective Cohort Studies September 19, 2024The effect of nonnutritive sweeteners (NNSs) on the body mass index [BMI (in kg/m²)] of children and adolescents remains unclear despite rising consumption. Detailed systematic evaluations are warranted. We aimed to summarize evidence on NNS consumption and BMI sex- and age-specific absolute changes (kg/m²) in pediatric populations, by NNS type, study design, duration, analysis type, […]Alan Espinosa
- Integration of epidemiological and blood biomarker analysis links haem iron intake to increased type 2 diabetes risk August 13, 2024Dietary haem iron intake is linked to an increased risk of type 2 diabetes (T2D), but the underlying plasma biomarkers are not well understood. We analysed data from 204,615 participants (79% females) in three large US cohorts over up to 36 years, examining the associations between iron intake and T2D risk. We also assessed plasma […]Fenglei Wang
- Associations Between Food Insecurity and Diet Quality Among Graduate Students and Postdoctoral Trainees in the Health Sciences at a Private University in Boston: A Cross-Sectional Study July 22, 2024CONCLUSIONS: Graduate students and postdoctoral trainees who experienced degrees of food insecurity reported lower diet quality. These observations underscore the need for policies and interventions to simultaneously reduce food insecurity and improve diet quality.Nour M Hammad
- Invited commentary: five hundred twenty-five thousand, six hundred calories, how do you measure diet in a year? July 20, 2024Nearly 4 decades after its landmark validation study, researchers undertook a major comprehensive reevaluation of the semi-quantitative food frequency questionnaire (FFQ). Although it has evolved with trends in science and our expanding food environment, this FFQ has been administered continuously to over 250,000 US cohort participants for several decades and has contributed enormously to our […]Deirdre K Tobias