From the video description:
We’re swimming in conflicting nutrition advice, so why not go straight to the definitive source?
I sit down with Dr. Walter Willett, Professor of Nutrition at Harvard, and the most cited nutrition scientist in the world. With a half century of research & data from hundreds of thousands of participants in the Nurses’ Health Study and the Health Professionals Follow-up Study, Dr. Willett has done more to define what a healthy diet actually looks like than almost anyone else in history.
We cut through the noise of internet fad diets to discuss what the highest-quality, long-term data actually proves about longevity, chronic disease, and what we should put on our plates.
We cover:
Carbohydrate Confusion: The crucial difference between whole grains and potatoes (and his new 2025 substitution study).
Protein Sources: How beef is the most pro aging food.
The Truth About Fats: Reflecting on the landmark 1993 trans-fat paper that changed the food industry (and the massive pushback he received).
If you want rigorous, peer-reviewed science rather than the latest social media trend, this is an interview you cannot miss.
Don’t forget to like, subscribe, and share this video with anyone who needs a dose of real nutrition science!
BOOKS:
Eat, Drink, and Be Healthy: The Harvard Medical School Guide to Healthy Eating by Walter Willett https://a.co/d/0agTI4Zh
Nutritional Epidemiology, 3rd Edition by Walter Willett https://a.co/d/0bgJUThX
Breaking Boundaries: The Science of Our Planet by Johan Rockström https://a.co/d/062OhrdW
PAPERS & REPORTS:
EAT-Lancet 2025: Global food transformation needed to ease pressure on the planet and save millions of lives https://www.stockholmresilience.org/r…
Meat vs EAT-Lancet: The dynamics of an industry-orchestrated online backlash https://changingmarkets.org/report/me…
Optimal dietary patterns for healthy aging | Nature Medicine https://www.nature.com/articles/s4159…
Intake of trans fatty acids and risk of coronary heart disease among women | The Lancet https://www.thelancet.com/journals/la…
Consumption of Olive Oil and Diet Quality and Risk of Dementia-Related Death https://jamanetwork.com/journals/jama…
Total and specific potato intake and risk of type 2 diabetes: results from three US cohort studies and a substitution meta-analysis of prospective cohorts https://www.bmj.com/content/390/bmj-2…
FASCINATING CHARTS:
Harvard’s heat map from optimal diets for healthy aging: https://drive.google.com/file/d/1l7Fe…
Harvard’s type of fat vs. mortality: https://drive.google.com/file/d/1dWla…
EAT Lancet’s food guide graphic: https://drive.google.com/file/d/1ngOg…
- 0:00 Our journey to obesity
- 3:21 The leading indicator of population health
- 7:59 Why we believe in some sciences but not others
- 11:48 The campaign against EAT Lancet
- 22:12 Beginning of Dr. Willett interview - Diet
- 29:31 The best science doesn’t get published
- 30:46 Getting the ban on trans fats
- 37:47 Is nutritional epidemiology reliable?
- 42:02 Eat Lancet diet & seed oils
- 47:33 Environmental aspect of food
- 50:34 Dr. Willett’s critics
- 1:00:16 My conclusions##