Evidence-Based Nutrition Information

Mario Kratz, PhD

Founder & Director

Mario.CB Bell Media #32_square__aug 2020

Welcome! My name is Mario Kratz, and I am the founder of Nourished by Science. Allow me to introduce myself.

I have Master’s and PhD degrees in Nutrition Sciences from the University of Bonn in Germany. Until June of 2021, my primary job was as a faculty member at the Fred Hutchinson Cancer Research Center (or Fred Hutch) in Seattle, WA, where I was an Associate Professor in the Cancer Prevention Program, part of the Public Health Sciences Division. I was also a faculty member in the Departments of Epidemiology and Medicine as well as the Nutritional Sciences Program at the University of Washington, also in Seattle, WA. I still hold an appointment as a (non-employee) Affiliate Investigator at Fred Hutchinson Cancer Research Center, and continue to be involved in several clinical research projects. However, I am now dedicating the majority of my time to the development of Nourished by Science to provide trustworthy, rigorous, and evidence-based information about nutrition, health, and chronic disease.

University of Bonn, Bonn, Germany
Fred Hutch, Seattle, WA, U.S.A.
University of Washington, Seattle, WA, U.S.A.

During my tenure in academia, my laboratory conducted clinical research to improve our understanding of the relationship between diet, obesity, and chronic diseases. A major focus of our work was on metabolic diseases such as type 2 diabetes and non-alcoholic fatty liver disease, cardiovascular disease, and cancer. We were particularly interested in the mechanisms through which diet affects energy homeostasis (i.e., how the body regulates weight and fat mass) and processes that contribute to chronic disease, such as low-grade chronic inflammation or insulin resistance. You can find most of my scientific publications on my Google Scholar profile.

As a core faculty member of the Nutrition Sciences Program at the University of Washington, I used to regularly mentor students in Master’s and PhD programs in nutrition or epidemiology. I also used to teach a course in Nutritional Epidemiology (NUTR 538 / EPI 538) for many years that focused heavily on the methods used in observational studies and randomized controlled trials. I have served on the editorial board of the American Journal of Clinical Nutrition (AJCN) since 2016, and used to serve on the editorial board of the Journal of Clinical Endocrinology and Metabolism (JCEM) between 2016 and 2019.

Please note that this website is not related to my prior employment at Fred Hutchinson Cancer Research Center, my prior academic appointments at the University of Washington, or my editorial board activities. All posts are based on my own independent work, and not related in any way to Fred Hutchinson Cancer Research Center, the University of Washington, or the American Journal of Clinical Nutrition.

On a personal note, I live in Seattle, WA, with my wife Rebecca and our two children, Luca and Sam. In addition to the science of nutrition, I do enjoy the practical applications of nutrition, i.e., gardening, cooking, and – of course – eating. I love hiking through the beautiful Pacific Northwest forests, yoga, playing squash, the game of Go (and board games in general), reading, and anything that involves my family.