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Sugar Allergy & Intolerance

Are you driven by cravings and need sugary foods to keep you from feeling helpless, hopeless, pained or sad? You probably tell yourself things aren’t so bad and you can stop anytime. But maybe you can’t and things keep getting worse?


Food Allergy Test

£249.00 £149.00

+ FREE Delivery on all orders

Tests for 23 foods and 19 environmental allergens

Take a scientific approach by taking a food allergy test. Simply take a quick finger-prick blood sample and return it to our laboratory in the post. You’ll receive your results within just 5 days of receipt of your sample! No social interaction required.

  • Accurate, scientific analysis
  • Simple and reliable home to lab finger-prick blood test
  • Receive clear test results for IgE reactions to 23 foods and 19 environmental allergens
  • Personalised support from our customer care team

Sugar intolerance symptoms

Problems stemming from sugar cravings and sugar sensitivity could include:

Mental fogginess



Skin problems

Some people may suffer with itchy skin after eating sugar, others may discover there is a link between eating sugar and bloating.

There are signs of a sugar intolerance, which you can look out for. To find out more about possible sugar intolerance symptoms click here. If you recognise these symptoms, we recommend that you always consult with your GP first, in order to rule out any underlying conditions.

There is a big difference between an intolerance to food and a food allergy. Symptoms related to food allergy are much more severe and are usually apparent within 2 hours. Symptoms caused by an intolerance meanwhile can be delayed up to three days, making it very difficult to identify the specific ingredient that is causing a reaction. Click here to learn more about the difference between allergy and intolerance.

Foods to avoid if you’re intolerant to sugar

If you’re intolerance to sugar, there are a number of foods you may consume daily that can be limited, if not removed from your diet altogether.

Drinks to avoid

  • Fizzy drinks
  • Fruit juice
  • Alcohol


Breakfast foods containing sugar

  • Cereals
  • Granola bars
  • Bread
  • Dairy products like yoghurt, milk
  • Peanut butter
  • Nutella
  • Honey


Dressings and sauces

  • Ketchup
  • Salad dressing
  • Barbecue sauce


Most desserts will contain sugar, including household favourites such as:

  • Syrup
  • Jelly
  • Jam
  • Cake
  • Sweets
  • Cookies
  • Ice cream


  • Cane juice
  • Agave
  • Molasses

Tackling an addiction to sugar

Some people really are addicted to sugar; trying to tell them not to eat sugar is like telling a drug addict to simply stop taking their drug. Why? Because sugar addiction, like food intolerances, affects the same biochemical systems in your body as highly addictive drugs. Cutting down on sugar can cause withdrawal symptoms, but they don’t last long, and once you have got through it you will feel like a new you!

By slowly changing when and what we eat, we can change how we feel – dramatically! Low glycemic load (GL) diets such as the “Holford Low GL Diet” are the most effective as they are based on one principle: If you lose blood sugar control, you gain weight, and feel hungry and tired; If you gain blood sugar control, you lose weight, feel happy and full of energy.

Identifying a sugar intolerance

It can be a hugely valuable step to carry out a food intolerance* test first before embarking on any dietary changes. The reason? IgG food intolerances trigger the immune system and once an immune response is triggered in the body (as evidenced by the raised food-specific IgG levels in blood) the body feels that it is ‘under siege’ thus hoarding supplies, storing fluid and increasing weight.

Provocation of the immune system can also lead to inflammation and swelling and causes the release of endorphins ultimately producing the well-known cycle of allergy (intolerance) and addiction; over 50% of those with food intolerance actually crave the foods that they are intolerant to!

In addition, serotonin levels drop adding to the cycle of cravings, which are in turn satisfied by foods which destabilise blood sugar and ultimately cause additional weight gain; in other words a vicious circle and it takes an overall approach to ‘undo’ the damage done. To find out more about the science of food intolerance, please click here.

Sugar intolerance diet

The low GL Diet can help gradually reduce sugar intolerance, and the identification and elimination of any food intolerances* using a YorkTest programme can also be important in order for the approach to be fully effective.

YorkTest do not offer a specific sugar intolerance test. Instead they test your IgG antibody reactions to up to 208 food and drink ingredients, including sugar. Not only can they identify your individual “trigger foods”, which could be the root cause of your symptoms, they also provide comprehensive nutritional support to help you safely remove them from your diet.

*YorkTest define food intolerance as a food-specific IgG reaction.

How it Works

4 Simple Steps to a Healthier You


Receive your test.

Order online and we’ll post your kit directly to your home.


Take the easy fingerprick blood test.

Pop 2-3 drops of blood into the lancet and post your sample to our laboratory.


Receive your results online within 5 days.

Review your reactivity levels and book your appointment with one of our qualified nutritional therapists.


Ongoing support.

Receive free nutritional therapist advice, with ongoing support from our customer care team by your side.

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