Food Intolerance

Food intolerance, also known as non-allergic food hypersensitivity, refers to an adverse reaction to food that does not involve the immune system and is distinct from a food allergy.

Causes of Food Intolerance

• Lactose intolerance: The inability to digest lactose, a sugar found in milk and other dairy products, due to a deficiency of the enzyme lactase.
• Fructose malabsorption: The inability to absorb fructose, a sugar found in many fruits and vegetables, which can lead to symptoms such as bloating, gas, and diarrhea.
• Gluten intolerance (non-celiac): An adverse reaction to gluten, a protein found in wheat, barley, and rye, that does not involve the immune system or damage to the small intestine.
• Sulfite sensitivity: An adverse reaction to sulfites, which are commonly used as preservatives in foods such as wine, beer, and dried fruits.
• Monosodium glutamate (MSG) sensitivity: An adverse reaction to MSG, a flavor enhancer commonly used in Asian cuisine.

Symptoms of Food Intolerance

• Bloating and gas
• Diarrhea or constipation
• Abdominal pain and cramping
• Nausea and vomiting
• Fatigue and lethargy
• Headaches and migraines
• Joint pain and arthritis
• Skin rashes and itching

Diagnosis of Food Intolerance

Diagnosing food intolerance can be challenging, as the symptoms are often similar to those of other conditions. The following methods may be used to diagnose food intolerance:

• Elimination diet: Removing suspected foods from the diet for a period of time and monitoring symptoms.
• Food diary: Keeping a record of food intake and symptoms to identify patterns and potential triggers.
• Hydrogen breath test: Measuring the amount of hydrogen in the breath, which can indicate malabsorption of certain sugars.

Treatment and Management of Food Intolerance

Treatment for food intolerance typically involves avoiding or reducing consumption of the offending food. The following strategies may also be helpful:

• Reading food labels carefully to identify potential triggers.
• Avoiding cross-contamination with other foods.
• Using enzyme supplements, such as lactase or alpha-galactosidase, to aid digestion.
• Managing symptoms with medications, such as antihistamines or anti-diarrheal medications.

Prevention of Food Intolerance

While it is not possible to prevent food intolerance entirely, the following strategies may help reduce the risk:

• Eating a balanced and varied diet.
• Avoiding excessive consumption of trigger foods.
• Staying hydrated and managing stress.

Frequently Asked Questions (FAQs)

What is food intolerance?
Adverse reaction to food that doesn't involve immune system.

What are common symptoms of food intolerance?
Bloating, gas, diarrhea, stomach pain.

What is the difference between food intolerance and food allergy?
Allergy involves immune system, intolerance does not.

Can food intolerance be diagnosed with a test?
No, diagnosis is based on symptoms and elimination diet.

What is an elimination diet?
Removing suspected foods to see if symptoms improve.

How common is food intolerance?
Affects up to 20% of the population.

What are common foods that cause intolerance?
Lactose, gluten, fructose, high-FODMAP foods.

Can food intolerance be treated with medication?
No, treatment involves avoiding trigger foods.

Is food intolerance related to other health conditions?
May be associated with irritable bowel syndrome (IBS).

Can food intolerance be prevented?
No, but symptoms can be managed with dietary changes.