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Food intolerances occur when the body has difficulty digesting or processing certain foods, leading to uncomfortable symptoms after eating. Unlike food allergies, food intolerances do not involve an immune system reaction and are generally not life-threatening.
At Certified Allergy & Asthma Consultants, we evaluate patients throughout New York’s Capital Region who experience symptoms after eating certain foods and are unsure whether their symptoms are related to a food allergy, food intolerance, or another condition.
Many people use the terms “food allergy” and “food intolerance” interchangeably, but they are different conditions that require different evaluation and management strategies. Understanding this distinction is an important step toward identifying the cause of symptoms and developing an appropriate treatment plan.
A food intolerance occurs when the digestive system cannot properly break down or process certain foods or ingredients. This may happen because the body lacks specific enzymes needed for digestion or because the digestive tract is sensitive to certain substances.
Unlike food allergies—which involve the immune system—food intolerances typically affect the digestive system and cause symptoms related to digestion rather than allergic reactions.
Many people with food intolerances can tolerate small amounts of the trigger food without experiencing symptoms, while larger amounts may cause discomfort.
Food intolerances and food allergies can cause similar symptoms, which is why they are often confused.
Several types of food intolerances are commonly reported.
Lactose intolerance is one of the most common food intolerances and occurs when the body lacks the enzyme lactase, which is needed to digest lactose—the sugar found in milk and dairy products.
Some individuals experience digestive symptoms after eating foods containing gluten even though they do not have celiac disease.
Certain individuals may be sensitive to food additives such as preservatives, artificial sweeteners, or flavor enhancers.
Some foods contain natural compounds that may trigger symptoms in sensitive individuals.
Food intolerance symptoms usually involve the digestive system and may develop several hours after eating the trigger food.
Common symptoms include:
For example, lactose intolerance can cause symptoms such as bloating, gas, and diarrhea after consuming dairy products.
Although these symptoms can be uncomfortable, they are generally not life-threatening.
Diagnosing food intolerance often involves a careful evaluation of symptoms and dietary patterns.
At Certified Allergy & Asthma Consultants, evaluation may include:
Your physician reviews the timing of symptoms and foods that may trigger reactions.
Patients may be asked to track foods and symptoms to identify possible patterns.
Temporary elimination of suspected foods followed by gradual reintroduction may help determine whether symptoms are related to a specific food.
Testing may be performed when symptoms suggest a possible food allergy rather than an intolerance.
Because symptoms of food intolerance can overlap with other digestive conditions, evaluation may sometimes involve coordination with a gastroenterology specialist.
Treatment for food intolerance typically focuses on reducing or modifying consumption of the trigger food.
Management strategies may include:
Limiting or avoiding foods that trigger symptoms.
Some individuals can tolerate small amounts of certain foods without symptoms.
For certain intolerances, such as lactose intolerance, enzyme supplements may help improve digestion.
Working with healthcare professionals can help ensure dietary changes remain balanced and nutritionally adequate.
Identifying and managing food intolerances can help reduce digestive symptoms and improve overall comfort.
Patients trust Certified Allergy & Asthma Consultants for evaluation of food-related symptoms.
Our specialists help patients:
Distinguish between food allergies and food intolerances
Identify possible food triggers for symptoms
Perform allergy testing when appropriate
Develop individualized management plans
With proper evaluation, many patients can better understand their symptoms and safely manage reactions related to certain foods.
