Faculty Directory

Roger Clemens

Roger Clemens

Adjunct Professor, Co-Founder/EVP, PolyScience Consulting

Department of Regulatory and Quality Sciences

Dr. Roger A. Clemens is co-founder and executive vice president of scientific operations for PolyScience Consulting. He is part-time faculty within the Department of Regulatory and Quality Sciences at the USC School of Pharmacy. He served as Scientific Advisor for Nestle© USA for more than 21 years and then Chief Scientific Officer for Horn for about a decade.

Dr. Clemens has published more than 50 original manuscripts in nutrition and food science, participated in more than 300 invited domestic and international lectures, and served as an expert panel member for the food industry, scientific organizations, trade associations and regulatory agencies in the United States, Canada and Europe.

Dr. Clemens was a member of the USDA 2010 Dietary Guidelines Advisory Committee, and is a third-term member of the US Pharmacopeia Food Ingredient Expert Committee.

Dr. Clemens is a past president of the Institute of Food Technologists (IFT) and former member of the IFT Board of Directors. As a spokesperson for IFT and the American Society for Nutrition (ASN), Dr. Clemens has been cited and interviewed by more than 500 domestic and international health journalists, and has appeared on numerous televised (e.g., Good Morning America, Good Morning London, CNN, CBS 48 Hours, TakePartLive, FoxNews) discussions on contemporary health, nutrition and food safety issues.

Areas of Expertise

  • Pediatric nutrition
  • probiotics
  • prebiotics
  • functional foods
  • analytical methodology applications
  • food safety and toxicology
  • food processing
  • Education


    Doctor of Public Health


    Master of Public Health


    Bachelor of Arts