Every guide we've written, in one place. What additives do, how to read a UK label, what each E-number means, and what the app does with all of it. Plain English, sources cited.
Two questions, two pages. If you have just read a code off a packet, use the A to Z. If you want to know which additives are worth your attention at all, use the explainer.
Every UK E-number, one page each. What the thing is, what it is doing in the food, and what the rules say about it here. Browse by number or by group.
Open the A to Z → ii · GuideNot a code list. What additives are put in food for, which ones the evidence links to real harm, and how to spot those in an ingredient list. Start here when you have no particular number in mind.
Read the explainer → iii · Field noteMost E-numbers are ordinary. Vitamin C, citric acid, pectin. A much smaller group carries evidenced concerns. This one sorts the two.
Read the field note → iv · GuideE102, E104, E110, E122, E124 and E129. The 2007 Southampton study, what the FSA did about it, and the warning line UK law makes a pack carry.
Read the guide → v · GuideWhat NOVA group 4 covers, the product categories it catches most often, and what UK research has found about eating a lot of it.
Read the UPF guide →How to read what is printed on a UK pack, and how to work out what you need in a day.
The 14 allergens UK law makes a manufacturer declare, how each one turns up in an ingredient list, and why the pack in your hand is always the final word.
Read the guide → ii · GuideRed, amber and green on the front of a UK pack. The exact per 100g cut-offs for fat, saturated fat, sugar and salt, and how to read the bar at a glance.
Decode a label → iii · CalculatorYour daily calorie need worked out from age, sex, weight, height and how much you move. Mifflin-St Jeor, in kg or lbs.
Run the calculator → iv · Guide13 vitamins and 12 minerals, each with its UK NRV and the foods that move it. Filling them in from what you log is a Pro feature in the app.
Open the guide → v · WalkthroughA worked day. Log normal meals, then read the percentages back. Covers the shortfalls that come up most in UK diets: vitamin D, B12, iron and magnesium.
Read the walkthrough →One page per job: the diary, the barcode scanner, the ingredient breakdown, the fasting timer. Each says what you get without paying and what sits behind Pro.
Calories, macros, additives and vitamins in one diary, with workouts and fasting on the same day. UK products by barcode, name or photo.
See how it works → ii · The appScan a UK pack for calories, the full ingredient list and how many additives it holds. The count is free. Naming each one and saying what it does is Pro.
See the scanner → iii · The appWhat a scan puts on screen: the ingredients in the order the manufacturer printed them, every additive lifted out and named in plain English, and a source on every flag.
Read the detail → iv · The app16:8, 5:2 and windows you set yourself, with the timer, your history and your food log on one diary. Pro.
See the timer → v · Field notesSupermarket guides, additive write-ups, and what we keep finding inside the UK food databases.
Browse the blog →These pages are the reference. The diary, the barcode scanner, the vitamin tracking and the AI Coach are in the app.
Get NutraSafe on the App Store → iPhone · iOS 17 · Pro £3.99/month or £34.99/year · Cancel any time