Fitness
Fact-checked

At WiseGEEK, we're committed to delivering accurate, trustworthy information. Our expert-authored content is rigorously fact-checked and sourced from credible authorities. Discover how we uphold the highest standards in providing you with reliable knowledge.

Learn more...

What are Some Symptoms of Food Allergies?

Garry Crystal
Garry Crystal

Many people who have food allergies are not even aware of the problem. Not all allergic reactions are severe or extremely noticeable. Some symptoms of food allergies may take the form of irritation or headaches. There are some warning signs that you may be suffering from simple food allergies.

Many different food allergies cause headaches and migraines. The chemicals and additives that are abundant in some foods can be a factor in these symptoms. Many people suffer headaches after ingesting preservatives and colorings found in some foods.

Tingling and itching in the mouth area is another symptom of food allergies. This condition is known as oral allergy syndrome (OAS). It occurs in around 20% of hay fever sufferers when they eat raw vegetables and fruit.

Milk allergies are often caused by casein or whey, but people can also be intolerant to lactose, a sugar found in milk.
Milk allergies are often caused by casein or whey, but people can also be intolerant to lactose, a sugar found in milk.

Rashes are another common symptom of food allergies. Dermatitis herpetiformis (DH), which appears as blistering and red blotches, can occur due to an allergic food reaction. The blistering usually appears on the knees, buttocks and elbows. This allergy is thought to be related to celiac disease. Celiac disease is the body’s adverse reaction to gluten, a protein found in wheat and oats that sets off the production of antibodies, causing tissue damage to the gut.

Many people are allergic to the gluten in wheat.
Many people are allergic to the gluten in wheat.

Lactose intolerance is a common food allergy. The inability to digest the milk sugar found in many dairy products can lead to digestive complaints and can also induce celiac disease. Problems may appear as diarrhea, abdominal bloating and indigestion.

Many people suffer from breathing problems due to food allergies. Breathing problems are a symptom of serious food allergies. Intolerance to certain foods may set off bouts of asthma in asthma sufferers. Certain preservatives found in processed foods are commonly known to cause wheezing. Food preparation can also set off allergies when allergens become airborne through peeling and chopping.

Migraines may be a sign of a food allergy.
Migraines may be a sign of a food allergy.

Other problems caused by allergies in food may include a constant feeling of lethargy. If a person is sensitive to particular foods, then the slow digestion of these foods requires a certain amount of energy. This energy is subtracted from other energy reserves throughout the body, leaving the sufferer tired and lethargic.

Many people who have problems with the digestive process can end up craving certain foods. When the digestive system fails to convert food proteins into amino acids, symptoms and cravings occur. Improperly digested food particles are left out of the blood stream and can cause not only cravings, but addiction. This may be a problem for some people at the beginning of a diet, when certain allergens are removed from their food intake.

Discussion Comments

anon206680

Am a student and I want to know to what extent are chemical preservatives harmful and what will happen in a few decades?

Post your comments
Login:
Forgot password?
Register:
    • Milk allergies are often caused by casein or whey, but people can also be intolerant to lactose, a sugar found in milk.
      By: Hyrma
      Milk allergies are often caused by casein or whey, but people can also be intolerant to lactose, a sugar found in milk.
    • Many people are allergic to the gluten in wheat.
      By: airborne77
      Many people are allergic to the gluten in wheat.
    • Migraines may be a sign of a food allergy.
      By: luminastock
      Migraines may be a sign of a food allergy.
    • Serious food allergies can be diagnosed after blood testing.
      By: Wojciech Sobiech
      Serious food allergies can be diagnosed after blood testing.
    • About a fifth of hay fever sufferers experience oral allergy syndrome when they eat raw fruits and vegetables.
      By: photophonie
      About a fifth of hay fever sufferers experience oral allergy syndrome when they eat raw fruits and vegetables.
    • Food allergies may manifest as skin rashes.
      By: darkhriss
      Food allergies may manifest as skin rashes.
    • Itching of the face, mouth, neck and throat are common symptoms of food allergies.
      By: Piotr Marcinski
      Itching of the face, mouth, neck and throat are common symptoms of food allergies.
    • The protein found in oats may cause a food allergy symptom.
      By: Okea
      The protein found in oats may cause a food allergy symptom.
    • The inability to properly digest food may cause cravings and food addiction.
      By: Viorel Sima
      The inability to properly digest food may cause cravings and food addiction.
    • Sneezing is one symptom of food allergies.
      By: David Stuart
      Sneezing is one symptom of food allergies.