03/15/2026
š„1977 was the year saturated fat was officially turned into the villain of the American diet.
That was the year the U.S. Senate released the Dietary Goals for the United States, led by Senator George McGovern.
Those guidelines told Americans to eat less fat⦠especially saturated fat⦠and to replace it with carbohydrates.
Overnight the foods humans had eaten for generations⦠eggs, butter, red meat, tallow⦠were suddenly framed as dangerous.
What many people do not realize is that the narrative had been building for years before that.
A major influence came from the work of Ancel Keys and his diet heart hypothesis⦠the idea that saturated fat raised cholesterol and therefore caused heart disease.
The problem was that the science was never as settled as it was presented to the public. Even at the time there were researchers strongly challenging those conclusions.
Another piece of the story that rarely gets talked about involves the American Heart Association. In the 1940s the organization was a small cardiology group with very little funding.
Then in 1948 the vegetable oil company Procter & Gamble donated what would be about $1.7 million in todayās dollars to the AHA⦠an enormous amount of money at the time.
That funding helped launch the organization into national prominence.
Not long after, the AHA began strongly promoting vegetable oils like Crisco and encouraging Americans to replace traditional animal fats with industrial seed oils.
By the time the 1977 dietary guidelines were released⦠the groundwork had already been laid.
The food industry pivoted quickly. Fat was removed from foods and replaced with sugar, refined grains, and seed oils to maintain flavor and shelf life.
Grocery stores filled with low fat processed foods that were marketed as āheart healthy.ā
And yet⦠since that shift we have watched obesity, diabetes, metabolic syndrome, and chronic disease explode.
Meanwhile the foods our ancestors ate for centuries⦠eggs, meat, butter, broth, and animal fats⦠became the ones people were told to fear.
Sometimes when you follow the money and the policy⦠the nutrition story begins to look very different. š°