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Nicolas Stettler, M.D.

Senior Managing Scientist

Chemical Regulation & Food Safety

Professional Profile


As a pediatrician and epidemiologist trained in nutrition, Dr. Stettler has more than two decades of experience in the scientific and clinical aspects of nutrition, in particular as they relate to child health, obesity, and associated cardiovascular risk factors. A former member of the American Academy of Pediatrics Committee on Nutrition, Dr. Stettler has experience in creating, reviewing, and commenting on the scientific aspects of professional organizations or governments policies related to child and infant nutrition. Through his medical training and teaching of clinical epidemiology at the University of Pennsylvania, where he was an Associate Professor of Pediatrics and Epidemiology, he has a broad understanding of various scientific and clinical aspects of human health and disease.

Dr. Stettler was the Principal Investigator of three NIH-funded grants, including one cohort study K23 and two randomized clinical trials R01. He therefore has an in-depth understanding of academic clinical research in domestic and international settings. As part of a sabbatical, he studied basis of marketing at the Wharton School of Business and examined the interactions between the food industry, science, and policy. He was a member of the Institute of Medicine Committee that examined the health risks and benefit of seafood as well as several other influential committees.

Dr. Stettler is recognized by a broad scientific network as an expert in child nutrition, including the epidemiology of the long-term impact of infant feeding and infant formula on health, the importance of various macro- and micronutrients on child health, energy balance, body composition, and the causes of obesity. He lectured on these topics at prestigious U.S. and international academic institutions and at scientific meetings. Other technical expertise include clinical epidemiology, analyses of existing surveys and medical databases, nutrition epidemiology, measurements of energy balance, obesity treatment and prevention, pediatric clinical care, tropical medicine, child growth and development, WIC and school nutrition policies, food and menu labeling, as well as Public Health Nutrition. His clinical experience includes taking care of the complex medical and nutritional issues of children with various health conditions, including obesity, hypercholesterolemia, cancer, metabolic diseases, diabetes, acute critical conditions, or prematurity.

  • M.D., Lausanne University School of Medicine, Switzerland, 1988
  • Diploma in Health Care and Management in Tropical Countries, Public Health and Curative Medicine Options, Swiss Tropical Institute, Switzerland, 1992
  • M.S.C.E., Clinical Epidemiology, University of Pennsylvania, 2000
  • FMH (Swiss Medical Association) Specialist in Pediatrics, 1997
  • Nutrition Epidemiology Summer Course, Johns Hopkins University, 1998
  • American Board of Physician Nutrition Specialists, 2001
  • Excellence in Teaching in Epidemiology Award, University of Pennsylvania, Center for Clinical Epidemiology and Biostatistics, 2002
  • Social and Preventive Medicine Foundation Award, Lausanne University, Switzerland, 2002
  • Circulation Best Paper of the Year 2005 Award, Population Science Category, 2006

    • Physician, FMH Swiss Medical Association
    • Physician, Pennsylvania State Board of Medicine
    • Practitioner, United States Drug Enforcement Administration (DEA)

    • Instructor to Assistant to Associate Professor of Pediatrics and Epidemiology (with tenure), Perelman School of Medicine at the University of Pennsylvania, 1997–2011