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Fish
Fish é a entrada 4 das catorze substâncias que o anexo II do Regulamento (UE) n.º 1169/2011 torna declaráveis. IgE-mediated food allergy, mainly to parvalbumin. Onde se esconde, que isenções aplicam e com o que reage de forma cruzada.
Isto é informação de referência, não um diagnóstico nem um plano de tratamento. Um calendário de pólen não lhe pode dizer a que é alérgico, e nenhuma página pode declarar um alimento seguro para si — só o rótulo do pacote na mão e o clínico que conhece a sua história. Qualquer coisa além de sintomas ligeiros e de curta duração na boca ou no nariz — inchaço que afeta a respiração ou a deglutição, urticária longe da boca, pieira, vómito ou desmaio — é uma pergunta de emergência, não de leitura.
O que a lei diz
Anexo II, entrada4: “Fish and products thereof”
Essa formulação leva toda a obrigação. A substância deve ser declarada sempre que é usada no fabrico de um alimento e ainda está presente no produto acabado, mesmo numa forma alterada, e deve ser destacada na lista de ingredientes por tipografia — negrito, maiúsculas, itálico, sublinhado ou uma cor contrastante. Não há requisito legal de uma caixa de alergénios separada, pelo que a lista de ingredientes é onde olhar.
Source: Regulamento (UE) n.º 1169/2011, anexo II e artigo 21.º · checked 2026-09-06
O que a reação realmente é
The dominant fish allergen is parvalbumin, a small muscle protein that is stable to heat, drying, smoking and salting. That is why none of the traditional preservation methods of this region make a fish safe, and why the steam and aerosol from cooking fish can trigger symptoms in a sensitive person in the next room. Fish allergy is one of the more common causes of severe reactions in Nordic children.
Who gets it, and does it last
Fish allergy usually starts in early childhood and usually persists into adult life. Some people react to one species and tolerate others — parvalbumin content varies, and tuna and swordfish are the species most often tolerated — but that is established by clinical testing, not by trial at the table.
Where it hides
- Worcestershire sauce and Caesar dressing (anchovy)
- Fish sauce in South-East Asian cooking
- Surimi and crab sticks
- Some pizza toppings and tapenade
- Stock and bouillon powders
- Omega-3 supplements
Fish sits at the centre of the food culture here — Baltic herring, sprat, salmon, whitefish, and salted, smoked and marinated preparations everywhere. School and workplace canteens across the region serve fish on a fixed weekday, which makes fish allergy a scheduling problem for a family as well as a dietary one.
Cross-reactions
Cross-reactivity between fish species is high because parvalbumin is so conserved. There is no cross-reactivity with crustaceans or molluscs, which are a completely separate problem. Anisakis, a parasite of marine fish, causes its own allergy that can look like fish allergy but responds differently to freezing and cooking.
The labelling detail
Entry 4 carries two narrow exemptions, both for fish gelatine and isinglass in specific technical uses. A beer or wine fined with isinglass therefore need not declare fish, which is worth knowing rather than worrying about, since the residue is minimal by design.
Exempt from declaration under Annex II:
- Fish gelatine used as a carrier for vitamin or carotenoid preparations
- Fish gelatine or isinglass used as a fining agent in beer and wine
Precautionary wording — “may contain”, “made in a factory that also handles” — is a separate matter: it is voluntary, unstandardised and carries no threshold. How strictly to treat it is a clinical decision, not a reading of the label. The labelling explainer sets out the whole frame, including what happens in restaurants and bakeries where there is no pack at all.
O que se lê mal
Fish oil supplements and fish allergy are not automatically incompatible, but a supplement is a food product and its label is the thing to read. And avoiding fish because of a shellfish allergy, or the reverse, is common and unnecessary.
Fontes:Regulamento (UE) n.º 1169/2011, anexo II· Regulamento de execução (UE) n.º 828/2014 da Comissão (alegações de glúten)· Nomenclatura de alergénios WHO/IUIS· janelas de época dos programas nacionais de monitorização aerobiológica da Estónia, Finlândia, Suécia, Dinamarca e Noruega· padrões de reação cruzada parafraseados da literatura de alergia e material da EAACI· verificado2026-09-06
Perguntas frequentes
É fish um dos catorze alergénios da UE?
Sim, entrada 4. O Regulamento formula-o assim: Fish and products thereof. Deve ser declarado e enfatizado na lista de ingredientes de qualquer alimento vendido na UE que o contenha.
Onde se esconde fish?
As fontes inesperadas de rotina são worcestershire sauce and caesar dressing (anchovy); fish sauce in south-east asian cooking; surimi and crab sticks; some pizza toppings and tapenade; stock and bouillon powders; omega-3 supplements. Isto torna a lista de ingredientes, em vez do nome do prato, a coisa a ler.
Há isenções de rotulagem para fish?
Sim, 2: Fish gelatine used as a carrier for vitamin or carotenoid preparations; Fish gelatine or isinglass used as a fining agent in beer and wine. Cada uma cobre uma fração altamente processada onde a proteína foi efetivamente retirada.
Com o que fish reage de forma cruzada?
Cross-reactivity between fish species is high because parvalbumin is so conserved. There is no cross-reactivity with crustaceans or molluscs, which are a completely separate problem. Anisakis, a parasite of marine fish, causes its own allergy that can look like fish allergy but responds differently to freezing and cooking.
Cereals containing gluten
Coeliac disease (autoimmune), wheat allergy (IgE) and non-coeliac wheat sensitivity — three different conditions under one entry.
Crustaceans
IgE-mediated food allergy, mainly to tropomyosin.
Eggs
IgE-mediated food allergy.
Amendoim
Alergia alimentar mediada por IgE – tipo grave de proteína de armazenamento ou tipo leve relacionado ao pólen de bétula.
Soja
Alergia alimentar mediada por IgE – primária ou relacionada ao pólen de bétula através do Gly m 4.
Alimentos por dieta e alergénio
The food database filtered by written rules. A way to explore, never an allergen clearance.
Keep the log, spot the pattern
When a reaction is hard to pin down, a food and symptom log across weeks is worth more than any single meal you can remember. TempoLife keeps both in one place.