What food allergies can cause diarrhea

A number of companies produce food intolerance tests, but these tests are not based on scientific evidence and are not recommended by the British Dietary Association (BDA).

The best way of diagnosing a food intolerance is to monitor your symptoms and the foods you eat.

What food allergies can cause diarrhea

See what happens when you cut out the suspected food for a while, and then reintroduce it into your diet.

Food diary

Try keeping a food diary, noting:

  1. any symptoms you own after eating these foods
  2. what foods you eat
  3. when these symptoms happen

Trial elimination diet

Once you own an thought of which foods may be causing your symptoms, you can attempt excluding them from your diet 1 at a time and observing the effect this has.

Try cutting out the suspected food from your diet for 2 to 6 weeks and see if your symptoms improve.

Reintroduce the food to see if symptoms return. You may discover you can tolerate a certain level and you only get symptoms if you own more than this amount.

Consider seeing a dietitian to make certain you’re receiving every your recommended daily nutrients while you do this trial.

Discover a registered dietitian.

Never restrict your child’s diet unless this has been advised by a dietitian or your doctor.

Is it a food intolerance or food allergy?

A food intolerance is not the same as a food allergy. Here’s how to tell the difference.

A food allergy:

  1. is often to specific foods. Common food allergies in adults include fish and shellfish and nut allergies.

    What food allergies can cause diarrhea

    Common food allergies in children include milk, eggs, fish, peanuts and other nuts 

  2. is a reaction by your immune system (your body’s defence against infection). Your immune system mistakenly treats proteins found in food as a threat
  3. can trigger allergy symptoms, such as a rash, wheezing and itching, after eating just a little quantity of the food (these symptoms generally happen quickly)
  4. can be life-threatening

A food intolerance:

  1. only results in symptoms if you eat a substantial quantity of the food (unlike an allergy, where just traces can trigger a reaction)
  2. does not involve your immune system – there is no allergic reaction, and it is never life-threatening
  3. causes symptoms that happen gradually, often a few hours after eating the problem food
  4. can be caused by numerous diverse foods

Find out more about diagnosis of food allergies.

When do I need to see a specialist?

A GP may refer you to a specialist if they’re not sure what’s causing your symptoms and further tests are needed.

You may also be referred if your kid has digestive symptoms (such as tummy pain and diarrhoea) and:

  1. has reacted suddenly or severely to a food 
  2. is not growing well
  3. has not responded to any elimination diets that your healthcare professional recommended
  4. has a suspected food allergy

Sheet final reviewed: 12 August 2019
Next review due: 12 August 2022

What are the symptoms of diarrhea?

The main symptom of diarrhea is passing loose, watery stools three or more times a day.

People with diarrhea may also own one or more of the following symptoms:

People with diarrhea caused by some infections may also own one or more of the following symptoms:

  1. light-headedness and dizziness
  2. bloody stools
  3. fever and chills
  4. vomiting

Diarrhea may cause dehydration and malabsorption.

What causes a food intolerance?

It is often unclear why a person is sensitive to certain foods.

If your symptoms happen after eating dairy products, it’s possible you may have lactose intolerance.

What food allergies can cause diarrhea

This means your body cannot digest lactose, a natural sugar found in milk, yoghurt and soft cheeses. A GP can generally diagnose lactose intolerance by looking at your symptoms and medical history.

Some people own trouble digesting wheat and experience bloating, wind, diarrhoea, being ill and stomach pain after eating bread. Read more about wheat intolerance (also known as wheat sensitivity).

Otherwise, the culprit may be a food additive, chemical or contaminant, such as:

  1. toxins, viruses, bacteria or parasites that own contaminated food
  2. monosodium glutamate (MSG)
  3. artificial sweeteners
  4. caffeine
  5. alcohol
  6. histamine (found in Quorn, mushrooms, pickled and cured foods, and alcoholic drinks)
  7. artificial food colours, preservatives or flavour enhancers

Gluten intolerance

Many people cut gluten from their diet thinking that they are intolerant to it, because they experience symptoms after eating wheat.

But it’s hard to know whether these symptoms are because of an intolerance to gluten, an intolerance to something else in wheat, or nothing to do with wheat at every.

What food allergies can cause diarrhea

It may assist to read more about cutting out bread from your diet.

Very few people need to cut out gluten from their diet, although it’s significant to do so if you have coeliac disease (which is not an intolerance, nor an allergy, but an autoimmune condition).

Could my symptoms be something else?

If you regularly own diarrhoea, bloating, tummy pain or skin rashes but you’re not certain of the cause, see a GP.

What food allergies can cause diarrhea

A GP may be capable to diagnose the cause from your symptoms and medical history. If necessary, they’ll order tests, such as blood tests.

You can also do some research yourself. It may help to discover out about other conditions that cause similar symptoms.

What food allergies can cause diarrhea

For example, discover out about:

The bowel is a sensitive organ and it’s common to own bowel symptoms when you own been ill or feel run below or stressed.

How do I manage it?

If you’re confident you are intolerant to a specific food, the only way to manage this is to stop eating the food for a while and then reintroduce little quantities while monitoring how much you can eat without causing symptoms.

Check food labels to see which sorts of foods to avoid.

If you ponder your kid may own a food intolerance, check with a GP or dietitian before eliminating foods from their diet, as a restricted diet could affect their growth and development.

Cows’ milk, for example, is an significant source of calcium, vitamin D and protein.

What are the symptoms of food intolerance?

In general, people who own a food intolerance tend to experience:

These symptoms generally happen a few hours after eating the food.

It can be hard to know whether you own a food intolerance as these are general symptoms that are typical of numerous other conditions.


What food allergies can cause diarrhea