What to bring your dietitian
You were told to keep a food diary. You kept it. Now there's an appointment, a notebook full of meals, and no idea what any of it says. Here's what a dietitian can actually use, and how to get it onto one page.
Meals, not days
Most diaries fall apart at the first step: they link a symptom to the day it happened. A day has three or four meals in it, so the symptom gets linked to all of them. Good days and bad days end up showing the same foods, and the answer hides in the overlap.
Link each symptom to the meal before it instead, with the time of the meal and the time the symptom started. The gap between them is the useful part. Most reactions people notice land somewhere in the hours after a meal, so a symptom at 11 pm says more about dinner than about breakfast.
Counts, with and without
One bad night after onion tells your dietitian nothing. Six bad nights out of eight onion meals tells them something, and only if you also know what happened on the meals without onion. Both halves of the count matter.
times you ate onion, bloating followed. Usually two to eight hours later.
Without onion, bloating followed two of 21 meals.
Enough to notice. Not a rule.That's the shape of a useful line: how often a symptom followed a food, and how often it showed up without it. Two numbers, not a feeling.
What came up clear
Foods your symptoms never followed are worth bringing too. They narrow the list, and they stop you cutting things for no reason. A food that only ever appeared alongside the real one, like garlic in every onion meal, drops out once you count it on its own.
The one page
- Which foods your symptoms followed, with the counts: how many times out of how many meals.
- Which foods came up clear, with the number of meals that says so.
- How you slept and how stressed you were across the two weeks. Both show up in the gut, and your dietitian will ask.
- What you'd like to try adding back, so the appointment ends with a plan instead of a longer list of things to avoid.
Keep the full diary on your phone for the day they ask about one specific meal. The page is the summary. The diary is the evidence behind it.

Sample diaryOne food's line, with the meals behind it.
Two weeks before
If the appointment is a few weeks out, start now and log every meal for about two weeks, including the boring ones. The meals where nothing happened are what make the count mean anything. Mark the days you ate out, and when you don't know what was in a dish, write down the dish and what it usually has in it, since the sauce is where a lot of foods hide. If it's sooner, bring what you have and say how many days it covers.
Good questions
How long should I track before a dietitian appointment?
About two weeks is usually enough for a food to show up a few times with and without a symptom following, which is what makes a count worth looking at. Start as soon as the appointment is booked. If it's sooner than that, bring what you have and say how many days it covers.
Should I track by day or by meal?
By meal. A day has three or four meals in it, so linking a symptom to the day links it to all of them. Note the meal, the time, and the symptom with the time it started, so the gap between them is on the page.
What if nothing stands out?
Bring that. A diary where no food lines up with anything is useful: it narrows the list, and it tells your dietitian the next question is probably not about one food. Clear foods are a finding too.
Do I need to bring the whole diary?
No. Bring one page: the foods your symptoms followed with their counts, the foods that came up clear, how you slept and how stressed you were, and what you want to try adding back. Keep the full diary on your phone in case they ask about a specific day.
NutrUp does the counting.
A food and symptom diary for iPhone. Photograph what you eat, tap how you feel, and in about two weeks see which foods your symptoms followed, with the meals behind each one. No account, and the diary stays on your iPhone. What NutrUp is.
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