Dr. Katz is a specialist in Internal Medicine, Preventive Medicine/Public Health, and Lifestyle Medicine, with an expertise in nutrition. He holds numerous U.S. patents; has over 200 peer-reviewed publications; has published hundreds of online and newspaper columns, and has authored/co-authored 19 books to date. He has an extensive media portfolio and has presented at conferences in all 50 U.S. states and multiple countries on six continents.

His career-long focus has been on translating science into action for the addition of years to life, life to years, and the confluence of human and planetary health. Dr. Katz was the 2019 James Beard Foundation Award nominee in health journalism, has been a widely supported nominee for U.S. Surgeon General, and has received three honorary doctorates. His most recent book, How to Eat, co-authored with Mark Bittman, is a 2021 IACP Awards finalist.