John Gieng, PhD
Associate Professor of Nutritional Sciences
General Education Program Coordinator
Department of Nutrition, Food Science & Packaging
- You can reach me at firstname.lastname@example.org. Be sure to include sufficient detail when sending me any messages.
- Students taking my classes can see me during office hours. Please refer to the course syllabus for the specific day and time to set up an appointment (a link is provided in the course Canvas site).
- Students interested in working with me should review the guide to joining my research group.
- Students requesting a letter of recommendation should review this guide.
- Students requesting academic advising should review this page.
- Postdoctoral Fellow, Center for Nutrition & Metabolism, Children's Hospital Oakland Research Institute (now UCSF Benioff Children's Hospitals - MLK Laboratory Research Facility)
- Doctor of Philosophy, Nutritional Sciences, The Pennsylvania State University
- Doctoral Minor, Physiology, The Pennsylvania State University
- Bachelor of Science, Nutritional Sciences, Emphasis in Physiology and Metabolism, University of California, Berkeley
Licenses and Certificates
- X-Ray Bone Densitometry (DXA) Technician, since 2018
Dr. John Gieng is a researcher who has studied nutrition in a variety of settings, including in the lab and in the community. He has used both in vitro and in vivo models, such as human and animal cell culture, rodents, and humans, in his work. His earlier research examined the effects of inflammation on the body's use of vitamin A, using mathematical modeling to better understand how nutrient deficiencies and disease can interact. Later, he focused on studying the role of gut microbiota in host health and diet-induced obesity, as well as the potential for teenagers to teach elementary school students about nutrition through a garden-based education program and how this can improve the teenagers' self-efficacy and ability to live a healthy lifestyle. At San José State University, Dr. Gieng combines his expertise in human metabolism, mammalian physiology, and applied nutrition education in his teaching and research.
Currently, Dr. Gieng's research centers on evaluating and improving health and performance through sustainable diets and behaviors. His research has three main areas of focus:
- Evaluating the nutritional quality of sustainable foods and their impact on health.
- Examining the impact of diet on health and related behaviors and programs using biotechnology.
- Investigating the relationships among nutrition, metabolism, body composition, health, and performance.
Faculty Insights interview in fall 2021: