Walter Willett is an internationally recognized expert on dietary and lifestyle factors that could affect health. He is the author of "Eat, Drink, and Be Healthy," which has been a best-seller for over 15 years, and is a sought-after speaker on a variety of topics that involve nutrition and health.

Walter Willett is a Professor of Epidemiology and Nutrition at the Harvard T.H. Chan School of Public Health, where he has been on faculty for over 30 years. He has also served as Chair of the Department of Nutrition, and as a member of the Director's Advisory Committee at the National Institutes of Health.

Walter has been recognized for his contributions to the field of nutrition and health, receiving numerous awards and honors throughout his career. He was awarded the 2018 E.M. Foster Lecture Award by the Academy of Nutrition and Dietetics, and the 2017 World Cancer Research Fund International Distinguished Professor Award.

Walter has published over 1,900 scientific articles, and is one of the most cited nutritionists in the world. His research has focused on diet and disease, with an emphasis on the role of healthy eating patterns in the prevention of chronic diseases such as heart disease, diabetes, and cancer.

Walter has also been instrumental in the development of the Healthy Eating Plate, which is a visual representation of the latest nutrition research and food guidance. The Healthy Eating Plate has been widely adopted by health organizations around the world and has been translated into numerous languages.

In addition to his academic and research work, Walter has been a frequent guest on media outlets, including "The Today Show," "Good Morning America," and NPR's "All Things Considered." He is a dynamic speaker and has presented on a variety of topics related to nutrition and health at conferences and meetings worldwide.

Overall, Walter Willett is a prominent figure in the world of nutrition and health, and his work has impacted policies and guidelines around the world. His expertise, research and passion for healthy living continues to inspire people to make positive changes in their lives.