The average American gets over 55% of their calories from ultra-processed foods… and for years, many have suspected this plays a major role in weight gain and metabolic dysfunction.

But here’s the shocking part…

The first randomized controlled trial to actually test this didn’t happen until 2019.

Led by top NIH researcher Kevin Hall, the study compared ultra-processed vs. unprocessed diets—matched for calories, protein, fat, sugar, and fiber.

Same macros. Same calories.

And yet…

Participants gained weight on the ultra-processed diet
…and lost weight on the unprocessed diet

So what’s really going on?

In this episode, we break down:

• What the study actually proves (and what it doesn’t)
• Why participants eating ultra-processed foods consumed ~500 more calories per day
• The overlooked role of hunger hormones like ghrelin and PYY
• Why this study doesn’t fully settle the “calories in vs. calories out” debate
• And the one insight almost no one is talking about

We also explore the real-world implications—cost, convenience, and why ultra-processed foods dominate modern diets.

If you care about fat loss, metabolic health, or the future of nutrition science… this is a conversation you don’t want to miss.

#UltraProcessedFoods #MetabolicHealth #WeightLoss