| Today’s letter |
| Put one hard food on your plate and 4pm gets easier |
| In 2013, a reporter named Michael Moss sat down with a food scientist in California and put a pile of chip bags on the table. The scientist, Steven Witherly, went straight for the Cheetos. He had written a book for people inside the food industry called Why Humans Like Junk Food, and he counted off about a dozen things the puff does to make a person reach for another one. One of them mattered more than all the rest, and it already had a name. |
| Witherly called it vanishing caloric density. His words to Moss: “If something melts down quickly, your brain thinks that there’s no calories in it.” He finished the thought by saying a person can just keep eating it forever. That ran in the New York Times thirteen years ago, from a scientist who writes for the industry itself. Today the trade magazines are calling texture the whole point of a snack, and crunch videos have passed a billion views on TikTok. Meanwhile you have stood in your own kitchen holding an empty bag, doing the math on how fast it went. |
| “How did I eat the whole thing?” |
| You are not a weak person. Nobody who holds down a job and keeps a household running is weak. You sit through things that would flatten other people, and you do it without much thanks for it. Saying no comes easy to you in most rooms. The bag on the counter is the one no you cannot seem to hold. |
| So you did what the advice said. Put the bag in a bowl, count out ten chips, chew slowly, drink a glass of water first, keep your hands busy. Every one of those tips hands the job to you: your counting, your hands, your patience. When the bowl emptied anyway, there was only one place left to look… and you looked there. You decided the problem was you. |
| Here’s what gets me. |
| None of that was your fault. Not the bowl, not the counting, not the bag. |
| Let me show you how I know. Not with my opinion, but with a study published this year. |
| Researchers at Wageningen University in the Netherlands fed forty-three men four different lunches, one at a time, on four separate days. Two of the lunches were ultra-processed and two were whole food. Inside each pair, one version was made hard to chew and the other was made soft. |
| These were young men, average age twenty-eight, so hold that part loosely. What they measured is the piece that matters to you: how fast the food went down, how full it left them, and how much they ate at a snack later in the day. |
| What they found |
| Wageningen University, 2026. Teo et al., Appetite. |
| The soft version (they ate more later) |
| Eaten at 61.2 grams a minute, about two and a half times faster. Lunch was over before the body had much to report. |
| The hard version (they ate less later) |
| Eaten at 25.9 grams a minute. Fullness after the meal ran about 32% higher, and at the snack later they took in 118 fewer calories. |
| Same meal both times. Only the texture was different. |
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| In other words, the lunch that took longer to chew appears to leave a person fuller on the very same food, and less hungry hours after. |
| Your willpower was never the variable here. The texture was. |
| Why would something as small as chewing time change how full a person feels? |
| Your stomach and your gut do send the full signal, and they are good at it, but the message takes fifteen or twenty minutes to get where it is going. The mouth is the faster gauge. Time spent chewing appears to be one of the ways the body keeps a rough count of what came in, which is why a meal you have to work at can register as more food than a meal that slides straight down. Soft food clears the mouth before the count starts and clears the gut before the message lands. Both of those windows are designed into the product on purpose, and together they are why a bag can empty while you are still waiting to feel like you ate. |
| Nobody stands a chance against food built to disappear… not you, not me, not the forty-three men in that lab. |
| That’s the part no one says out loud. Your fullness switch was never broken. The food was built to get past it before the switch could throw. |