Food Allergy or Food Intolerance?

Around one or two people out of every 100 in the UK have a food allergy, but food intolerance is more common. Genuine food allergy is rare. About 2% of the population and 8% of children under the age of three are affected.

What is a Food Allergy?

A food allergy is a rapid and potentially serious response to a food by your immune system. It can trigger classic allergy symptoms such as a rash, wheezing and itching.

The most common food allergies among adults are to fish and shellfish and nuts, including peanuts, walnuts, hazelnuts and Brazil nuts. Children often have allergies to milk and eggs as well as to peanuts, other nuts and fish. 

What is a Food Intolerance?

Food intolerance are more common than food allergies. The symptoms of food intolerance tend to come on more slowly, often many hours after eating the problem food. Typical symptoms include bloating and stomach cramps.

It's possible to be intolerant to several different foods. This can make it difficult to identify which foods are causing the problem.

Food intolerance can also be difficult to tell apart from other digestive disorders that produce similar symptoms, such as inflammatory bowel disease, gastrointestinal obstructions or irritable bowel syndrome (IBS).

Lactose Intolerance

Lactose intolerance, sometimes known as dairy intolerance, occurs when your body can't digest lactose. Lactose is in milk and dairy products such as yogurts and soft cheeses.

The main symptoms are diarrhoea and stomach pain. In most cases, your GP can diagnose lactose intolerance by looking at your symptoms and medical history.

Could it be Another Type of Food Intolerance or Condition?

Sometimes it isn't clear which food is causing a problem. The only reliable way of identifying such a food intolerance is through an exclusion diet, where you cut out certain foods from your diet one at a time to see if there's an effect.

Coeliac disease is a common digestive condition where a person has an adverse reaction to gluten. However, coeliac disease is not an allergy or an intolerance to gluten. It is an autoimmune condition where the immune system mistakes substances found inside gluten as a threat to the body and attacks them.

Gluten is a protein found in wheat, rye and barley that damages the intestine of people with coeliac disease. Symptoms include diarrhoea, bloating and weight loss. Coeliac disease can be accurately diagnosed with a blood test and biopsy.

Treatments for food allergy and food intolerance 

• In all cases, always read food labels carefully, and learn where your problem food may be used as an ingredient in other foods. 

• In the case of a food allergy, you'll have to avoid the food you're allergic to. You may be able to eat the cooked versions without any problems, as can be the case with fruit or vegetable allergies. 

• With lactose intolerance, you'll have to reduce the amount of dairy food that you eat. 

• With other forms of food intolerance, you'll have to stop eating the food for a while, or possibly for life. 

With the autoimmune condition coeliac disease, you must avoid gluten for life. For more advice on your diet, ask your GP. Contact Wellness Lab at 03-6257 5001 to know the test about food intolerance.

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