Food intolerances are also related to the dose of the food, or how much of it is eaten. Its symptoms only kick in once the person eats a large amount of the food that triggers the condition. Meanwhile, food allergies are typically not dose-related. Even a small amount of a particular food can trigger an allergic reaction.
Another food-related condition that is very different from food allergies is food poisoning. This comes from eating spoiled or tainted food and is not a pre-existing condition of the person eating the food.
Types of Food Allergies
There are two main types of food allergies:
IgE-mediated food allergy. The most common type of allergy, this is triggered when the immune system produces the antibody called immunoglobulin E.
Non-IgE-mediated food allergy. This is caused by cells other than the immunoglobulin E.
Food allergies can also be classified based on the kinds of food that trigger them. Here are some of the more common foods that cause allergies:
Egg allergies are a pretty common, especially among children. It is possible to be allergic just to the yolks and not to the egg white or vice versa. This is because of the proteins found in the two parts of the egg.
Allergy to cow’s milk is also quite common among children and even babies. Sometimes, this happens when they are exposed to the protein found in cow’s milk before they are six months old. Children and adults with this type of allergy will show reactions within 5 to half an hour of drinking milk.
This is a rather specific form of allergy and is triggered by nuts and seeds that comes from trees. You may be surprised to learn that it is rather common. Some tree nuts that can cause this form of allergy include:
- Brazil nuts
- Macadamia nuts
- Pine nuts
Food products that contain these nuts can also trigger an allergic reaction.