Gary Taubes: What If Fat, Doesn't Make You Fat?
What this video covers
A time capsule from the height of the diet wars: this is Taubes debating his landmark 2002 New York Times Magazine article “What If It’s All Been a Big, Fat Lie?” on Dr. Oz’s television show, opposite low-fat advocate Dr. Dean Ornish and the American Heart Association’s Dr. Barbara Howard. The article — the piece that launched Taubes’s career as a nutrition contrarian and led directly to Good Calories, Bad Calories — had argued that the scientific case against dietary fat was far weaker than the public had been told.
The format is classic daytime-TV debate, which makes it valuable as a historical document of where the establishment stood in 2011. Ornish defends the low-fat, plant-forward position he had championed for decades; Dr. Howard represents the AHA’s institutional stance; Taubes, introduced with his Harvard physics and Stanford engineering credentials, argues that the field has spent a century building dietary guidance on untested assumptions about fat, and that the real dietary driver of obesity and chronic disease is refined carbohydrate. Dr. Oz moderates, giving each side room to make its case. The show closes with a memorable roundtable: each participant says what they had for breakfast — Taubes had scrambled eggs with sausage and tomato slices; Dr. Howard had whole-grain cereal with blueberries and orange juice; Ornish had an egg-white omelet with blueberries; Oz had nuts — a neat encapsulation of the three dietary philosophies on display.
What makes the video worth watching today is the collision it captures: Taubes’s historical-revisionist argument — that the low-fat consensus was a wrong turn — meeting the institutional defenders of that consensus in real time. None of the participants’ positions here should be read as current; all three principals have evolved their public stances since, and the science has moved on in ways none of them fully anticipated.
Key points
- The debate centers on Taubes’s 2002 NYT Magazine article questioning the scientific basis of the low-fat consensus.
- Taubes argues that dietary fat was demonized on weak evidence, and that refined carbohydrates are the more plausible driver of obesity.
- Dr. Dean Ornish defends the low-fat position; AHA’s Dr. Barbara Howard defends the institutional mainstream view.
- Taubes leans on his history-of-science argument: that nutrition guidance was built on assumption rather than rigorous testing.
- Dr. Oz’s opening frames the stakes: obesity-related illnesses claiming more than 300,000 lives a year, with an estimated $200 billion in annual health-care costs.
- Ornish makes a notable concession near the end: “If it turns out to be true, I’ll be the first to change my mind — but show me the data.” Taubes’s closing position is that the establishment is “a little too dogmatic” and that the truth may remain unknown until the low-carb counter-theory is acknowledged and tested.
- The video captures the 2011 state of the diet wars — a useful historical record rather than a current scientific snapshot.
- All claims in the debate are the participants’ positions; the underlying questions remain actively contested.