Seafood Intolerance

If you have an intolerance (defined by YorkTest as a food-specific IgG reaction) to seafood or shellfish, your body produces an inflammatory response to the fish or shellfish proteins present.

Unlike seafood allergy, the effects of seafood intolerance are usually delayed, and are not life threatening but can cause you to feel unwell.

Where To Look

If shellfish is present in a food product, it is usually listed on the packaging. However, it is a good idea to familiarise yourself with the various types of seafood and shellfish to be aware of if you have a seafood intolerance.

White fish (cod, plaice, sole, coley, haddock, pollock, monkfish)
Oily fish (mackerel, tuna, sardines, anchovies, salmon, pilchards, herring, trout, tuna)
Molluscs (clams, mussels, oysters, snails, scallops, squid, octopus)
Crustaceans (crab, lobster and shrimp)

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Take our most comprehensive food intolerance test to measure your IgG reactivity to over 200 food and drink ingredients. Simply take a finger-prick blood sample at home and return it to our laboratory for analysis. Receive your personalised results within 7 days, along with a Nutritional Support Guide to help you understand your results and make informed dietary changes.

Replacements for a balanced diet

White fish is an excellent source of protein, vitamins and minerals. The Food Standards Agency recommends that we eat at least two portions of fish a week, with at least one of these being oily fish which is particularly nutritious.

However, if you are suffering from a seafood intolerance, it is important to discover which seafood in particular you react to and to make sure you include suitable fatty acid replacements in your diet such as

Leafy greens such as spinach
Avocado
Walnuts, brazil nuts, hazelnuts and pecans
Olive oil and flaxseed oil<
Eggs
Sesame butter, pumpkin seed butter
Tofu
Coconut oil

If you have found out that you are intolerant to seafood or shellfish, changing your diet need not be daunting. YorkTest Nutritional Therapists are here to help you understand how to optimise your food choices.

4 Simple Steps To A Better You

You will receive your testing kit in the post

Take a blood sample with our easy to use finger-prick test kit

Send your sample back in the prepaid envelope provided

Receive your test results online within 7 days

You will receive your testing kit in the post

Take a blood sample with our easy to use finger-prick test kit

Send your sample back in the prepaid envelope provided

Receive your test results online within 7 days

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Case Studies

“I can honestly say i feel like the best and healthiest version of myself – I’m no longer filling my body with things it doesn’t like and instead focusing on fuelling it properly. Taking the test was one of my best decisions to date!”

Abigail Nicholls

Symptoms Acne, fatigue, bloating and stomach cramps

a young woman with long dark hair and dark top smiling at the camera

“I am happier and healthier. It was great to know what I should avoid eating without having to second guess or trial and error constantly.”

Amanvir Kalkat

Symptoms Digestive issues, lethargy

man in his 30s wearing glasses and smiling at the camera

“I’m healthier, fitter and have more energy, and am more mentally positive. I wish I’d been tested earlier, it would have transferred my confidence in my youth”

Angela Barber

Symptoms Psoriasis, insomnia

Severe psoriasis addressed with food intolerance testing programme

“No headaches, finally leading a normal, much happier life”

Christine Greenfield

Symptoms Headaches, migraines

“I couldn’t imagine going back to the life I had before this test! I’m so relieved I did it. You only get one body, so you need to look after it, and I’m so glad I made the decision to look after mine.”