Guide

A histamine food diary that finds what you actually react to

Headaches, flushing, a racing heart, a bloated belly – often hours after the meal that set them off, which is exactly why they are so hard to pin down. A histamine food diary puts meals and symptoms side by side, with their times. NutriSpy keeps it as an app and estimates the histamine in every meal along the way.

Why a diary helps when you suspect histamine

The usual suspects are easy to name – aged cheese, red wine, sauerkraut, salami – and hard to confirm. Cutting out everything at once tells you nothing; cutting out the wrong thing costs you a food for no reason.

A diary turns the question around: instead of a list, you ask your own days. Which meals did the worse ones follow? How much time sat in between? And how often did the two really go together?

Rather start on paper? Here is the printable PDF template – with the same columns the app keeps.

Meals with a histamine value

One sentence is enough – by voice, photo, barcode or text. NutriSpy breaks the meal into ingredients and nutrients and estimates its histamine. Estimated, because histamine varies with ripeness and storage: a guide value that makes a suspicion readable.

FODMAPs alongside

Fructose, lactose and the other FODMAP groups sit right next to the histamine value. The complaints overlap, and telling them apart is half the work.

Symptoms with their time

Headache, flushing, itching, a racing heart, bloating, diarrhoea – named as a symptom, with the time it happened. The time is what later shows the gap to the meal.

Sleep and activity, automatically

Sleep and workouts come in from Apple Health or Health Connect. Both belong in the picture: not every bad day is about food.

What it looks like in the app

Most frequent symptoms in the statistics

What NutriSpy makes of it

"Why do you feel this way?" After five logged days, NutriSpy explains your symptoms from your own data: which meals and habits go with your worse days. The histamine and FODMAP values of your meals are part of that.

Honest about strength. Every pattern comes with an estimate of how solid it is. A hunch is labelled a hunch – so you can stop avoiding a food you never actually reacted to.

For your doctor. Export your diary as a PDF or CSV and bring weeks of times, meals and symptoms to the appointment.

Frequently asked questions

Which foods are high in histamine?

Mostly long-aged and fermented foods: aged cheese, red wine, sauerkraut, cured sausage such as salami. In fish, histamine rises with storage time. How strongly you react is individual – which is exactly what your diary shows.

How accurate is the histamine value?

It is an estimate. Histamine varies with ripeness, storage and preparation more than most nutrients do. As a guide value it is enough to compare meals and to test a suspicion against your own days.

Does the diary replace a diagnosis?

No. A diary shows what goes together in your own data – it does not diagnose. NutriSpy never names a condition and never suggests a medication. What lies behind your symptoms is for your doctor to work out; the diary is the basis for that conversation.

How soon do I see results?

The explanation of your symptoms appears after five logged days, the explanation of your stool pattern after ten – and both get more precise with every further day. Missing days are treated as missing, not guessed.

What does NutriSpy cost?

Your diary is free, AI-powered logging included. The insights, sync back to Apple Health or Health Connect and the export are part of Premium, by subscription. Current prices are shown in the app.

Start your histamine food diary today

One sentence per meal, seconds per symptom – and the first connections from week one. For iOS and Android.

More about NutriSpy: Home · IBS & intolerance · Acid reflux food diary · Fiber tracker · Printable template

NutriSpy is not a diagnostic tool and does not replace medical advice. For health concerns, please consult qualified healthcare professionals.