The Rise and Fall of Popular Diets Over 100 Years

The Rise and Fall of Popular Diets Over 100 Years

June 10, 2026 · 47 min · Episode 130

About this episode

Holly and Jim explore nearly 100 years of dieting history, examining the evolution of popular diets and their impacts on society.

If you've spent years hopping from one diet to the next: low fat, then low carb, then keto, then intermittent fasting, you're not alone, and you're not failing. The truth is, the diet world has been cycling through the same promises, the same villains, and the same disappointments for nearly a hundred years. And most of us never stop to ask why. Join Holly and Jim as they do something they've never done before on the show: step back and take a decade-by-decade look at almost 100 years of dieting history. From the 1930s to the GLP-1 era of today, they trace how we went from counting calories to carnivore diets and what it all actually taught us (or didn't). This one is equal parts fascinating, a little humbling, and surprisingly fun. Whether you're a diet history nerd or just someone who's tired of starting over, this episode will change the way you think about every diet you've ever tried. Discussed on the episode: The three-category system Holly and Jim use to classify every diet, and why one category might describe your current eating plan The diet from the 1930s that your favorite wellness influencer is basically still selling today Why the decade that got everyone obsessed…

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