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Gladys ​Block, PhD

Professor Emerita, UC Berkeley School of Public Health
Gladys Block is a Professor Emerita and currently Senior Scientist at NutritionQuest, a company that provides diet and physical activity questionnaires and online behavior-change interventions. She previously worked at the National Cancer Institute as a nutritional epidemiologist.
Phone: (510) 301-2984


Gladys Block is a Professor Emerita at UC Berkeley’s School of Public Health. Block received a Bachelor of Arts in English from Swarthmore College in 1960, and a Ph.D. in epidemiology from Johns Hopkins University’s School of Public Health in 1982. From 1982 to 1991, Block worked at the National Cancer Institute of the National Institutes of Health as a nutritional epidemiologist. While there, she developed the Block dietary questionnaire and conducted research on Vitamin C. At UC Berkeley she continued her research on vitamin C and its role in reducing oxidative stress and inflammation, as well as developing low-cost interventions to help people improve their eating habits. Her work on dietary assessment was taken over by her son, Torin Block, through NutritionQuest, where she is currently Senior Scientist.

Research Interests

  • Vitamin C and cardiovascular disease risk factors
  • Antioxidants, oxidation, inflammation
  • Nutrient status and disease relationships
  • Low-cost computerized methods to help people improve physical activity and nutrition


  • PhD – Epidemiology
    Johns Hopkins University, 1982
  • BA – English, Philosophy, French
    Swarthmore College, 1960