Momentum Center | Driving Discovery to End Childhood Obesity

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Adjunct Lecturer in Family Medicine
Specialty: Food insecurity and diet-related disease

Dr. Cohen is an Adjunct Lecturer in the Department of Family Medicine in the U-M Medical School. She is also an Assistant Professor of Family Medicine and Assistant Professor of Health Services, Policy, and Practice at Brown University. Dr. Cohen’s research interests involve the intersections of food insecurity and diet-related disease, community-engaged research, and clinical-community collaboration to better identify and address the social determinants of health. Much of her work as a health services researcher and family physician focuses on food security, access to healthful foods, and diet-related diseases among children and families. With this, she hopes to collaborate and develop cross-disciplinary approaches to preventing and addressing childhood obesity. Dr. Cohen received her medical degree from the Mount Sinai School of Medicine and completed her residency at Santa Rosa Family Medicine in California.

Dr. Cohen’s faculty profile

Assistant Professor of Psychiatry
Specialty: Exercise for Adolescents with Depression

Richard Dopp studied psychology as an undergraduate at the University of Michigan. Following graduation, he taught 5- to 6-year-old children in Baltimore, MD with severe emotional problems. He returned to the University of Michigan for medical school. Dr. Dopp chose to continue his training at the University of Michigan, completing residency in adult psychiatry and a fellowship in child and adolescent psychiatry before joining the faculty in the Department of Psychiatry in 2007. Dr. Dopp’s primary research interests include the relationships among obesity, physical activity, sleep, and depression in adolescents.

Dr. Dopp’s faculty profile

Clinical Lecturer in Pediatrics
Specialty: Neonatal Development; Infant Anthropometrics; Human Milk Composition

Lindsay Ellsworth is a Clinical Lecturer in Neonatal-Perinatal Medicine in the Department of Pediatrics. Her research is focused on understanding the mechanisms of early life nutritional programming on body development and infant growth during lactation in order to identify new nutritional strategies for preterm infants. She is also involved in evaluating the compositional differences of mother’s own milk and donor human milk through the study of metabolomics, macronutrients, hormones, and bioactive factors and the impact on infant metabolism. Dr. Ellsworth received her medical degree from Loyola University Chicago Stritch School of Medicine and completed her residency in Pediatrics and a fellowship in Neonatal-Perinatal Medicine at the University of Michigan.

Dr. Ellsworth’s faculty profile

Professor of Neurology
Specialty: Childhood Obesity and Diabetes

Eva Feldman is the Russell N. DeJong Professor of Neurology at the U-M Medical School, and the Director of the Program for Neurology Research and Discovery. She oversees a group of 30 scientists and clinicians. Dr. Feldman’s work focuses on understanding the neurological complications of childhood obesity and diabetes at both a basic science and clinical level.

Dr. Feldman’s faculty profile

Associate Professor of Pediatrics
Specialty: Psychological Comorbidities Influencing Pediatric Obesity; Behavioral Health Interventions

“I am excited to have this opportunity to collaborate with other pediatric obesity researchers at the University of Michigan. I have no doubt that these collaborations will lead to future research projects that will have an important impact on child health.”

Bethany Gaffka is an Associate Professor in the Division of Child Behavioral Health within the Department of Pediatrics at U-M. Dr. Gaffka earned her bachelor’s degree from Bates College and her doctoral degree in Clinical Psychology from the University of Maine. She completed her internship in Pediatric Psychology at the University of Florida, and then completed a specialized fellowship in Pediatric Obesity Intervention and Research at the University of Florida in 2007. Dr. Gaffka currently serves as the Director of the C.S. Mott Children’s Hospital Pediatric Weight Management Clinic. Her clinical interests include the behavioral treatment of pediatric obesity, assessment and treatment of psychological comorbidities influencing pediatric obesity, and behavioral health interventions for youth with chronic illness. Dr. Gaffka is a member of The Obesity Society, American Heart Association, American Psychological Association, and Society of Pediatric Psychology.

Dr. Gaffka’s faculty profile

Assistant Professor of Pediatrics
Specialty: Early life determinants of later metabolic disease risk; Nutrient exposures during critical windows of development; Pancreatic beta-cell biology

Brigid Gregg is an Assistant Professor in the Department of Pediatrics. Her work involves understanding how early life nutrient exposure influence body composition. Childhood obesity is one of the potential outcomes of developmental stressors. Dr. Gregg earned a B.S. in Animal Physiology and Neuroscience from the University of California, San Diego and an MD at Case Western Reserve University.

 Dr. Gregg’s faculty page
Professor of Pediatrics
Specialty: Obesity; Diabetes; Social Media; Mobile Health

Joyce Lee is a physician, researcher, and design thinker. She is one of the few individuals in the country with formal training in Pediatric Endocrinology and Health Services Research, and she holds a Master’s in Public Health from the Department of Health Management and Policy at the University of Michigan. Dr. Lee is the Robert P. Kelch, MD Research Professor of Pediatrics at the U-M Medical School, with a joint appointment in the Department of Nutritional Sciences at the U-M School of Public Health. She conducts clinical and health services research in the areas of pediatric obesity and diabetes. She can be found on twitter (@joyclee) and at her website,

Dr. Lee’s faculty profile

Professor of Pediatrics; Director, Center for Human Growth and Development
Specialty: Child Eating Behavior; Maternal Feeding; Stress Eating

“I am thrilled to have the opportunity to collaborate with individuals in diverse disciplines to address the problem of childhood obesity.  Addressing childhood obesity successfully will require collaborations at the edges of different disciplines and I’m very enthusiastic about learning from my colleagues and expanding my own thinking.”

Julie Lumeng is the Thomas P. Borders Family Research Professor of Child Behavior and Development in the Department of Pediatrics at the U-M Medical School and Director of the Center for Human Growth and Development. She is a developmental and behavioral pediatrician who studies stress, eating behavior, and contributors to obesity risk in young, low-income children. For the last decade, Dr. Lumeng’s work has been primarily within Head Start. She is currently examining how stress in children’s lives may alter stress hormones, which may drive appetite and lead to excessive weight gain; how differences in Head Start program characteristics may be associated with differences in rate of weight gain over the course of the academic year in Head Start; and how maternal feeding practices are associated with childhood obesity among 5-year-old Head Start graduates. She is currently directing a 4-year randomized controlled trial within three different Head Start programs in Michigan, examining how both nutrition and parenting interventions may prevent obesity. Dr. Lumeng completed her MD (1997) and training in Pediatrics at the University of Michigan, and a fellowship in Developmental and Behavioral Pediatrics at Boston University.

Dr. Lumeng’s faculty profile

Research Co-Investigator, Department of Psychiatry
Specialty: Exercise for Adolescents with Depression

“The Momentum Center is a wonderful meeting of the minds! I am delighted to be involved with so many energetic people from such a wide variety of backgrounds. Our researchers bring unique but collaborative perspectives on the challenge of impacting the obesity epidemic in our society.” 

Ann Mooney’s primary research interest is in the field of exercise and depression in adolescents and children. Her graduate school internship was with the adolescent psychiatric inpatient unit at the University of Michigan, and upon receiving her MSW, she worked with the children’s inpatient unit. Additionally, she worked with Ann Arbor Public Schools for many years, primarily with children on the autism spectrum. Ann’s career began at U-M’s Institute of Social Research, and has developed through various roles at the Depression Center as a clinical research associate, a research coordinator, and a co-investigator.

Assistant Professor of Pediatrics; Director, Division of General Pediatrics

Kelly Orringer is the Division Director and Service Chief for General Pediatrics at Michigan Medicine. The division manages over 100,000 patient visits annually, addressing both preventative and acute care needs. Dr. Orringer’s clinical interests span the range of preventive care and illness management in primary care, and her research interests include quality improvement in primary care, variations in care, weight management, and migrant/immigrant/refugee health. Dr. Orringer earned her medical degree at Harvard Medical School, and completed training in Pediatrics as well as a fellowship in General Academic Pediatrics at the University of Michigan.

Dr. Orringer’s faculty profile

Professor of Pediatrics; Obstetrics and Gynecology; Molecular and Integrative Physiology
Specialty: Developmental programming of childhood metabolic dysfunctions

Dr. Padmanabhan’s research focus is translational and centers on understanding the fetal original of pubertal and adult reproductive and metabolic disorders and the impact of native steroids and estrogenic environmental pollutants, such as bisphenol-A, in programming such defects. Utilizing integrative approaches ranging from cell and molecular biology, as well as in vitro systems to whole animal physiology, the emphasis is to understand the fundamental processes controlling reproductive cyclicity in the female, the mechanisms by which environmental and hormonal influences in early fetal life program reproductive dysfunction and metabolic dysfunction.

Dr. Padmanabhan’s faculty profile

Assistant Professor of Pediatrics
Specialty: Feeding behaviors and infant growth

Megan Pesch is a developmental and behavioral pediatrician who studies child and mother risk factors for childhood obesity including rate of infant growth, child eating behaviors, and mother feeding behaviors. She is currently exploring harsh maternal feeding behaviors in toddlers. Dr. Pesch also examines sociocultural influences on children’s eating behaviors. Dr. Pesch completed her MD, Masters in Clinical Research, Pediatrics training, and sub-specialty fellowship training in Developmental Behavioral Pediatrics, all at the University of Michigan.

Dr. Pesch’s faculty profile

Assistant Professor of Pediatrics
Specialty: Pediatric obesity; Inflammation

Durga Singer is a Pediatric Endocrinologist and the focus of her research has been to understand the development of obesity-induced inflammation by understanding how diet-induced obesity impacts the hematopoietic stem and progenitor cells to produce activated macrophages. She is coupling mechanistic animal studies with observational investigations of myeloid inflammation in obese children, to advance our understanding of the relationship between obesity, sex, inflammation, and disease in our patients. Dr. Singer completed her MD (2006), training in Pediatrics, and a fellowship in Pediatric Endocrinology, all at the University of Michigan.

Dr. Singer’s faculty profile

Assistant Professor of Pediatrics

Susan Woolford is an Assistant Professor with the Child Health Evaluation and Research (CHEAR) Center in the Division of General Pediatrics and the Medical Director of the Pediatric Weight Management Clinic. Her research interests focus on behavioral interventions in the clinical setting for the treatment of childhood obesity, with an emphasis on the use of communications technology to enhance patient engagement and adherence to treatment recommendations. Dr. Woolford earned her medical degree at Michigan State University, where she also completed her residency and chief residency. She earned an MPH and completed her Pediatric Health Services Research Fellowship at the University of Michigan.

Dr. Woolford’s faculty profile