| Let me show you how I know. Not with my opinion, but with a study out of University College London. |
| Researchers there recruited 55 adults, nine out of ten of them women, all getting about two thirds of their calories from ultra-processed food. Everybody did both diets. Eight weeks on one, four weeks off, then eight weeks on the other. All the food arrived at their homes in boxes. |
| Both menus were built to hit the same national healthy eating guide: the same fat, the same salt, the same fiber, the same fruit and vegetables. One was cooked from whole food in a research kitchen. The other hit those identical numbers using packaged products off the supermarket shelf. Nobody was told to eat less, and nobody counted anything. They were asked to eat as much or as little as they wanted, the way they normally would. |
| What they found |
| University College London, 2025. Dicken et al., Nature Medicine. |
| The packaged menu (1.05% down) |
| Eight weeks of ultra-processed food that met every guideline on the sheet. Body weight down 1.05%, and their savory cravings hardly gave an inch. |
| The whole food menu (2.06% down) |
| Same guide, same eight weeks, same people. Their weight came down 2.06%, about double, and the control they reported over cravings improved roughly twice as much, with savory cravings easing around four times further. |
| Nobody restricted a thing. The only difference was how the food had been made. |
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| In other words, two menus can satisfy every number a nutrition guide asks for and still do different things once they are inside a body. Studies suggest the processing itself may be part of what does it. |
| Her willpower had nothing to do with it. Yours doesn’t either. |
| So what is the packaged version doing that the cooked version isn’t? |
| Think about what is actually in the box. An ultra-processed food is not a dish somebody cooked. It is an assembly of parts: starch pulled out of corn and dried into powder, oil pressed and rearranged, protein separated out of milk or soy. On top of those go the flavorings, the colors and the emulsifiers that hold the parts together and make the result taste like something you want. Much of the breaking down your gut used to do has already happened in the factory, so the food arrives half finished and leaves almost nothing to slow it. The flavor sitting on top of it was designed by people paid to make you want more of it. That is not a fair fight, and it was never built to be one. |
| Ruth never stood a chance. Neither did you, I’d bet. |
| That’s the part no one says out loud… every guideline she followed for thirty years counted the fat and the fiber and the salt, and not one of them ever asked how the food had been put together. |