What is a Food Allergy vs. Food Intolerance?

Food Intolerance Food Allergy
Reactions up to 72 hours after eating
Immediate reactions (2 hours or less)
Multiple foods can be involved
Rarely more than 1 to 2 foods
Any organ system can be affected
Primarily skin, airways and digestive system
Very common
Trace amounts of foods can cause reactions
Difficult to self-diagnose
Caused by raised IgE antibody
Symptoms can clear after avoidance (3-6 months)
Lifelong
Food allergies dietitian

Analyses your reactivity to 208 foods and you get a 30 minute consultation with a dietitian/nutritionist to create an action plan based on your results. 

Food Intolerance symptoms

  • Abdominal Pain/Bloating/ IBS
  • Acne
  • Constipation/ Diarrhoea
  • Chronic Fatigue Syndrome
  • Sinusitis
  • Eczema, rashes, skin problems
  • Headaches/ Migraines
food intolerance and allergy dietitian

Tests your allergy (IgE) reactions to 23 food allergies and 19 environmental allergens and you get a 30 minutes consultation with dietitian & nutritionist specializing in food allergies to create an action plan based on your results. 

Food Allergy Symptoms

  • Tingling or itching in the mouth
  • Hives
  • Swelling of the lips, face, tongue and throat or other parts of the body
  • Wheezing, nasal congestion or trouble breathing
  • Nausea or vomiting
  • Dizziness, lightheadedness or fainting

How the Food Reaction Test Works

1. Contact us to request the test
We can either send the test to your home or you can come to one of our clinics to do it.
1. Take a blood sample
Using our test kit. you can easily extract a few drops of blood from your fingertip painlessly.
2. Laboratory analysis
Send your sample to our laboratory free of charge in the enclosed return mailing envelope. Your sample will be analysed in our specialist laboratory.
3. Detailed results report
You will receive your personal results as part of a detailed results report after just a few days.
Food intolerance test includes:

  • Almond
  • Banana
  • Beef
  • Coffee
  • Cow’s Milk
  • Egg White
  • Egg Yolk
  • Gluten
  • Oat
  • Peanut
  • Pork
  • Sugar
  • Tea
  • Wheat
  • Yeast

  • Acai Berry
  • Burdock Root
  • Chamomille
  • Coffee
  • Cow’s Milk
  • Dandelion Root
  • Elderberry
  • Elderflower Mix
  • Ginseng (Korean)
  • Ginseng (Siberian)
  • Goat’s Milk
  • Grape (Cabernet Sauvignon)
  • Grape (Chardonnay)
  • Grape (Chenin Blanc)
  • Grape (Concord)
  • Grape (Malbec)
  • Grape (Merlot)
  • Grape (Pinot Grigio)
  • Grape (Pinot Noir)
  • Grape (Red Zinfandel Mix)
  • Grape (Riesling)
  • Grape (Sauvignon Blanc)
  • Grape (Syrah/Shiraz)
  • Grape (White Zinfandel)
  • Green Tea
  • Guarana
  • Hibiscus
  • Nettle
  • Rooibos (Red Bush Tea)
  • Rosehip
  • Sheep’s Milk
  • Tea

  • Abalone
  • Anchovy
  • Cod
  • Crab
  • Cuttlefish
  • Eel
  • Haddock
  • Herring
  • Lobster
  • Mackerel
  • Mussel
  • Oyster
  • Plaice
  • Prawn
  • Salmon
  • Sardines
  • Scallops
  • Shark
  • Shrimp
  • Sole
  • Trout
  • Tuna
  • Vendance

  • Apple
  • Apricot
  • Avocado
  • Banana
  • Bilberry
  • Blackberry
  • Blackcurrant
  • Blueberry
  • Boysenberry
  • Cantaloupe
  • Cherry
  • Cloudberry
  • Coconut
  • Cranberry
  • Cucumber
  • Goji Berry
  • Grapefruit
  • Honeydew
  • Kiwi
  • Lemon
  • Lime
  • Lingonberry
  • Lychee
  • Mango
  • Mulberry
  • Olive
  • Orange
  • Papaya
  • Peach
  • Pear
  • Pineapple
  • Plantain
  • Plum
  • Pomegranate
  • Prune
  • Pumpkin
  • Raspberry
  • Strawberry
  • Tamarind
  • Tomato
  • Watermelon

  • Barley
  • Buckwheat
  • Corn (Maize)
  • Dinkel Flour (Spelt)
  • Gliadin (Gluten)
  • Hops
  • Malt
  • Millet
  • Oat
  • Quinoa
  • Rice
  • Rye
  • Wheat
  • Wheatgrass

  • Agar Agar
  • Anise Seed
  • Basil
  • Bayleaf
  • Cardamom
  • Cassia
  • Chilli Pepper
  • Cinnamon
  • Clove
  • Coriander
  • Cumin
  • Curry Leaves/Curry Powder
  • Dill
  • Garlic
  • Ginger
  • Jasmine
  • Juniper berry
  • Lemongrass
  • Mint
  • Mustard Seed
  • Nutmeg
  • Paprika
  • Parsley
  • Peppercorn
  • Saffron
  • Sage
  • Thyme
  • Turmeric
  • Vanilla

  • Beef
  • Chicken
  • Deer
  • Duck
  • Goat
  • Lamb
  • Pheasant
  • Pork
  • Turkey

  • Agave
  • Almond
  • Aloe Vera
  • Bamboo
  • Brazil Nut
  • Carob
  • Cashew Nut
  • Chia Seed
  • Chickpea
  • Cocoa Bean
  • Cola Nut
  • Flax (Linseed)
  • Hazelnut
  • Hemp
  • Oak
  • Okra
  • Peanut
  • Rocket (Arugula)
  • Sesame Seed
  • Seaweed
  • Spirulina
  • Sugar Cane
  • Sunflower Seed
  • Tamarind
  • Tapioca
  • Walnut

  • Asparagus
  • Aubergine (Eggplant)
  • Bean sprouts
  • Beetroot
  • Bok choi
  • Broccoli
  • Brussel Sprouts
  • Cabbage
  • Carrot
  • Cauliflower
  • Celery
  • Haricot Bean
  • Kale
  • Kidney Bean
  • Lentils
  • Lettuce
  • Lotus Root
  • Mushroom
  • Onion
  • Parsnip
  • Pea
  • Peppers (Capsicum)
  • Potato
  • Rhubarb
  • Soybean
  • Spinach
  • String Bean
  • Swede
  • Sweet Potato
  • Turnip
  • Water Chestnut

Allergy test includes:

  • Egg white
  • Milk
  • Cod
  • Salmon
  • Crab
  • Shrimp
  • Meat mix (pork, beef, chicken, lamb)
  • Wheat
  • Rice
  • Soy
  • Potato
  • Peanut
  • Hazelnut
  • Almond
  • Tomato
  • Carrot
  • Orange
  • Strawberry
  • Apple
  • Peach

  • Birch
  • Hazelnut pollen
  • Olive
  • Cypress
  • Ash, European
  • Timothy grass
  • Rye
  • Bermuda grass
  • Bahia grass
  • Common ragweed
  • Mugwort
  • English plantain
  • Cat dander
  • Horse dander
  • Dog dander
  • House dust mites (D. pteronyssinus and D. farinae)
  • Cockroach
  • Cladosporium herbarum

Frequently Asked Questions

A food allergy occurs when your body’s immune system doesn’t recognise a certain food and mistakenly sees it as harmful. Your body reacts by producing chemicals for which the symptoms can range from being very mild to severe and can even be fatal.

  • Milk (mostly in children)
  • Eggs 
  • Peanuts 
  • Tree nuts 
  • Fish 
  • Shellfish 
  • Wheat
  • Some fruit and vegetables

In the UK, almost two adults in every 100 people have food allergies, and about five to eight children per 100 have a food allergy. 

Many children can outgrow a food allergy, however in adults, outgrowing a food allergy is less common

Tests should be carried depending on the type of allergy:
  • If the symptoms developed quickly (an IgE-mediated food allergy) – a skin-prick test or a blood test can be suitable.
  • If the symptoms developed more slowly (non-IgE-mediated food allergy) – the best way to identify the allergy is with an elimination diet. Do not attempt a food elimination diet by yourself without discussing it with a qualified allergy dietitian.

Be careful with the following tests as many claims to detect allergies but should be avoided as they have been proven to be untrustworthy.

  • Hair analysis – claims to detect food allergies by taking a sample of your hair.
  • Vega testing – claims to detect allergies by measuring changes in your electromagnetic field.

At Nutrition Synergy, a food allergy dietitian can help you identify a food allergy you may have and help you manage it. 

Unlike a food allergy, a food intolerance is not caused by an immune response and is usually more common. It happens when a food cannot be digested by our body properly.  

  • Lactose found in milk and dairy product
  • Gluten 
  • Caffeine
  • Fructose found in some fruits and vegetables 

In the UK, it is estimated that about 9 million suffer from a food intolerance symptom. 

There is no treatment known for food intolerance but symptoms can improve and be managed. Some supplements may also help in digesting the foods and reduce the symptoms. 

There are multiple tests available such as blood tests and hair analysis, but these tests are not supported by scientific evidence and are not recommended by the British Dietary Association (BDA) at the moment. 

If you suspect that you or someone you know has a food intolerance, gluten sensitivity, or other difficulties with food, a food intolerance nutritionist can help you identify your intolerances and guide you through the right steps of an elimination diet

Here at Nutrition Synergy, our qualified dietitians can help you understand the foods that cause your symptoms and help you successfully to manage your symptoms. 

What’s more, we will advise you on how to avoid confirmed and suspected allergens and intolerances and maintain a healthy and balanced diet to meet your nutritional needs.

Without the supervision of a qualified nutritionist, any form of dietary rejection can be very dangerous because of the risk of losing important nutrients. This is especially true when key food groups are excluded. 

When you are ready to take care of your health and well-being, do not hesitate to can reach out to us. We provide our services face-to-face, or online.

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