Allergen-free eating: not a trend, a survival skill.
If you have a diagnosed food allergy, avoiding that food is the treatment, and labels are your lifeline. If you don't, cutting "allergens" because a test kit told you to is a waste of good food. Here's how to tell, and how the rules work in Europe and Singapore.
The short version
- What it is
- Strictly avoiding the specific foods you're diagnosed as allergic to, in every form, including hidden ones.
- Good for
- Diagnosed food allergy. Avoidance is the standard treatment.
- Bad at
- Anything else. It's not a detox, a weight-loss plan or a fix for bloating.
- Evidence
- Strong, for diagnosed allergy.
- Our take
- Get a proper diagnosis, cut exactly what you need to, and keep everything else. We filter your plan around it.
What allergen-free eating actually is
A food allergy is your immune system overreacting to a food. Reactions range from itchy skin or hives to swelling of the lips and throat, wheezing, vomiting, and, in the worst case, a life-threatening reaction that needs adrenaline and an ambulance.1 That's different from an intolerance, which usually means bloating or tummy pain a few hours later and isn't dangerous in the same way.1
Allergen-free eating isn't one diet. It's your diet minus your allergens. Someone with a peanut allergy and someone with a milk allergy eat completely differently. The treatment is the same: avoid the food, including anything where it's an ingredient, and have a plan for when things go wrong.1
How it works in your body
In a classic food allergy, the immune system makes antibodies (IgE) against a protein in the food. Next time you eat it, those antibodies trigger a fast release of histamine and other chemicals. Hence the swelling, itching and, at worst, a drop in blood pressure.
There's no "a little bit is fine" built into this. For many people with allergies, traces count. Which is why the law makes food companies tell you.
The EU 14
In the EU, 14 allergens must be declared: cereals containing gluten, crustaceans, eggs, fish, peanuts, soybeans, milk, tree nuts, celery, mustard, sesame, sulphites above 10 mg per kilo or litre, lupin and molluscs.2 On packaged food they're highlighted in the ingredients list. In restaurants, bakeries and canteens, allergen information is also mandatory, and each country decides how it's given: on the menu, on a sign, or by asking staff.3 This is one EU regulation, so it applies the same way in Germany and Austria. Switzerland isn't in the EU and has its own food law, so check Swiss labels on their own terms.
Singapore's list is different
Singapore requires eight groups to be declared on packaged food: cereals containing gluten, crustaceans, eggs, fish (including molluscs), peanuts and soybeans, milk (including lactose), tree nuts, and sulphites at 10 mg/kg or more.4 Celery, mustard, sesame and lupin are not on it. And food made to order at hawker centres, food courts and restaurants is exempt from the general labelling rules.4 In other words: in Singapore, you ask. Every time.
What you eat, what you don't
Eat
- Everything you're not allergic to. Seriously, all of it
- Fresh, single-ingredient food: meat, fish, eggs, vegetables, fruit, rice, potatoes (minus your allergens)
- Home-cooked meals where you know every ingredient
- Packaged food with a clear, current label you've actually read
- Swaps that replace the nutrients you lose, e.g. calcium if milk is out
- Water, black coffee, green tea
Forget it
- Your allergen, in any form, including oils, flours and powders
- Food with no label or a label you can't read
- Hawker, bakery or buffet food when nobody can tell you what's in it
- "May contain" products, if your allergist told you to avoid them
- Foods cut because of an IgG test or a hair analysis
- Cutting extra foods "to be safe" without a diagnosis
Alcohol on allergen-free eating
Usually fine, if they're not your allergen
- Plain spirits: in the EU, cereals, whey and nuts used for distilling are exempt from the allergen list2
- Wine, if sulphites aren't your problem
- Gluten-free beer, if wheat or barley is
Check before you drink
- Wine, cider and many sparkling drinks: sulphites
- Beer: cereals containing gluten
- Cream liqueurs: milk. Nut liqueurs: tree nuts
- Cocktails and sours made with egg white
Labels are thin here. In Singapore, drinks above 0.5% alcohol don't need an ingredients list at all.4 In the UK and EU, drinks above 1.2% don't need a full list either, but allergens still have to be declared.5 When in doubt, ask the bar or skip it. And a few drinks make you worse at reading labels.
50 Club: not on a prescribed diet. Ask your doctor or dietitian what's safe for you. The general rules are in our alcohol guide.
What it's good for, with proof
Preventing reactions in diagnosed allergy
For a confirmed food allergy, avoiding the food is the core of treatment, with antihistamines for mild reactions and an adrenaline auto-injector for severe ones if your doctor prescribes it.1 There's no diet that cures a food allergy. Avoidance keeps you out of A&E.
Clear labels make it doable
In the EU, an allergen in the ingredients list has to be named clearly and set apart in bold, a different font or a background colour.3 Singapore bans vague words: "vegetable oil" isn't allowed when it's peanut oil, and "emulsifier" isn't allowed when it's egg lecithin.4 The rules mean that, on packaged food at least, you can usually find out.
The uncomfortable truth
"I'm allergic to loads of foods." Maybe not. A European review found that about 17% of people say they've had a food allergy at some point. When tested with a proper food challenge, under 1% reacted.6 That gap is huge. Real allergies are serious. Self-diagnosed ones often aren't allergies.
"My IgG test showed 30 food intolerances." The European Academy of Allergy and Clinical Immunology says IgG4 food tests have no diagnostic value. IgG4 against a food mostly shows you've been eating it.7 Paying to cut healthy food because of one is a scam with a lab coat on.
"Keep babies away from allergens to be safe." For peanut, the opposite. In the LEAP trial, 640 high-risk babies either ate peanut regularly or avoided it until age five. Among those who weren't yet sensitised, 13.7% of the avoiders developed peanut allergy, against 1.9% of the eaters.8 If your baby has severe eczema or an egg allergy, ask your doctor how and when to introduce peanut. Don't experiment alone.
The risks
- Severe reactions. Sudden swelling of the lips, mouth or throat, trouble breathing, pale or blue skin, or collapse: use your adrenaline if you have it and call an ambulance, even if you feel better.1
- Cutting too much. Every food you drop without reason makes it harder to eat enough protein, calcium and fibre. This matters most for children, who are still growing. A dietitian should plan any diet that cuts major foods.
- Trusting "may contain" too much, or too little. There are no international rules for precautionary labelling, so "may contain" means different things on different packs.4 Ask your allergist which ones you can ignore.
- Eating out. Satay sauce, shrimp paste in sambal, sesame oil, nut-crusted Schnitzel, Spätzle made with egg. Restaurants in the EU must tell you if you ask.3 Hawker stalls in Singapore don't have to label at all.4
- Self-diagnosis. Don't remove foods from your diet without speaking to a doctor first.1
Allergies: watch the staples
The real danger is hidden allergens in everyday sauces and staples. A few you'll meet in DACH and Singapore:
| Everyday food | Allergen (EU list of 14)2 | Swap |
|---|---|---|
| Soy sauce | Soybeans, cereals containing gluten | Coconut aminos, salt and lime |
| Satay sauce, peanut sauce | Peanuts | Sunflower seed butter sauce |
| Sambal belacan, laksa paste | Crustaceans (shrimp paste) | Chilli, garlic and lime paste |
| Oyster sauce | Molluscs | Mushroom-based sauce |
| Fish sauce, Worcestershire sauce | Fish | Salt, lime, tamarind |
| Mayonnaise, Remoulade, Spätzle | Eggs (mayo also mustard) | Olive oil dressing, potato or rice |
| Stock cubes, soup mixes | Often celery | Homemade stock, read labels |
| Hummus, sesame oil, sesame bread rolls | Sesame | Bean dip with olive oil |
| Dried apricots, wine | Sulphites | Fresh fruit |
| Some gluten-free bread | Lupin | Rice or buckwheat flour bread |
Don't do allergen-free eating if you…
- haven't been diagnosed by a doctor or allergist
- are going by an IgG, hair or "bioresonance" test
- plan to cut foods from a baby's or child's diet without a doctor
- are pregnant or breastfeeding and want to cut foods "for the baby": ask your doctor first
- have ever had an eating disorder
Healthen me asks about all of these and gives you a different plan if any apply.
How we use allergen-free eating in your plan
As a filter. Healthen me asks about allergies, and you can tick any of the EU 14 plus anything else you've been diagnosed with. The plan then removes those foods and their common hidden sources from your meals, and swaps in alternatives so you still get your protein and calcium.
What we don't do: diagnose allergies, decide how strict you need to be about traces, or replace your allergist's action plan. The diagnosis and the avoidance plan are your doctor's and dietitian's. Our filter knows recipes. It doesn't know the hawker stall's wok, the bakery's flour dust, or whether a supplier changed a recipe last week. Read the label, ask, and carry your adrenaline if it's prescribed.
If you're thinking of a vegan product to dodge milk or eggs: fine, but check it for soy, nuts, sesame and lupin. If your problem is more like flushing and headaches after wine and aged cheese, that's a different story: see low histamine. And coeliac disease is not an allergy: see gluten-free.
This article is general information, not medical advice. If you have a medical condition or take medication, talk to your doctor before changing how you eat.
Sources
- NHS. Food allergy. nhs.uk/conditions/food-allergy
- Regulation (EU) No 1169/2011 on food information to consumers, Annex II (substances or products causing allergies or intolerances). eur-lex.europa.eu/eli/reg/2011/1169/oj
- Regulation (EU) No 1169/2011, Article 21 (labelling of allergens in the ingredients list) and Article 44 (national measures for non-prepacked food). eur-lex.europa.eu/eli/reg/2011/1169/oj
- Singapore Food Agency. A Guide to Food Labelling and Advertisements (amended November 2025), sections on foods and ingredients known to cause hypersensitivity, precautionary allergen labelling and exemptions. sfa.gov.sg (PDF)
- Coeliac UK. Alcohol (labelling of drinks above 1.2% ABV). coeliac.org.uk/…/alcohol
- Nwaru BI, Hickstein L, Panesar SS et al. The epidemiology of food allergy in Europe: a systematic review and meta-analysis. Allergy 2014;69(1):62–75. doi.org/10.1111/all.12305
- Stapel SO, Asero R, Ballmer-Weber BK et al. Testing for IgG4 against foods is not recommended as a diagnostic tool: EAACI Task Force Report. Allergy 2008;63(7):793–796. doi.org/10.1111/j.1398-9995.2008.01705.x
- Du Toit G, Roberts G, Sayre PH et al. Randomized trial of peanut consumption in infants at risk for peanut allergy. New England Journal of Medicine 2015;372(9):803–813. doi.org/10.1056/NEJMoa1414850