| Today’s letter |
| The 30-second breakfast swap that sharpens your focus |
| There was a woman ahead of me at the grocery store last week, maybe fifty, unloading her cart onto the belt. She got to the card reader and froze, her thumb hovering over the keypad, and couldn’t remember her PIN. Four digits she has typed a thousand times, and they were just gone. |
| She laughed it off the way we all do, and said she’d lose her head if it wasn’t screwed on. Then she looked at me, a stranger in line behind her, and said the thing I haven’t been able to shake… |
| “What is wrong with me lately?” |
| Maybe you know the feeling. There was a time you could hold six things in your head at once: the schedule, the grocery list, the person you meant to call back. You ran the whole house from memory. Now you walk into a room and forget why you came in. Whole sentences come apart in your mouth, halfway through, and you go fishing for the end. |
| So you did what all of us do. You blamed yourself. It was your age, you decided, or your hormones, or the wine, or the simple fact that you never sit down. Crossword books turned up on the nightstand. There was a brain-game app that promised to make you sharp again. You told yourself to try harder, sleep more, focus… and when the fog stayed put, that felt like proof. Proof that the broken thing was you. |
| Here’s what gets me. |
| None of it was your fault. |
| Let me show you how I know. Not with my opinion. With a study that came out this June and got argued over all across the internet. |
| Researchers at Monash University pulled the diet and brain-test records of more than 2,100 Australian adults, middle-aged and older, none of them diagnosed with dementia. They lined up how much ultra-processed food each person ate against how well each one scored on tests of attention and mental processing speed. |
| Ultra-processed food is the packaged stuff put together in a factory: the sweetened cereals, the snack bars, the flavored yogurts, the sodas, most of what comes in a bright box with an ingredient list you can’t pronounce. The average person in this study got about 41 percent of their daily calories from it. Four out of every ten bites. |
| What they found |
| Monash University, 2026. Cardoso et al., Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring. |
| The factory food (focus dropped) |
| For every 10 percent more of a person’s diet that came from ultra-processed food, their scores on the attention and processing-speed tests dropped a measurable notch. |
| The whole food (focus held) |
| The less of the diet that came from ultra-processed food, the better the attention held up, and it held up even in people whose diets were otherwise healthy. |
| It was linked to how processed the food was. Not to how hard anyone was trying to concentrate. |
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| In other words, the fog you’ve been blaming on your own head may have been sitting on your plate the whole time. |
| The woman in that checkout line wasn’t concentrating any less than she used to. Neither are you. |
| So how does a box of cereal reach all the way into your ability to pay attention? |
| The leading explanation is the processing itself. When whole food gets broken down and rebuilt in a plant, its natural structure is stripped away, and additives and processing chemicals go in to bind it together and keep it good on a shelf for months. The researchers found the drop in focus tracked with that degree of processing, not simply with missing out on healthy food. Your brain runs on what you feed it, and this is food built for shelf life and crave-ability, not for the woman trying to think straight. |
| She never stood a chance in that line. Neither did you, I’d bet. |
| That’s the part no one says out loud… you were eating the exact food you were sold as normal, three times a day, and it was tugging at the one thing you needed to get through it. |
