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Latrice Perez Health September 12, 2025

10 Foods That Trigger More Allergies Than Peanuts

When you think of food allergies, what comes to mind first? For most people, it’s peanuts. We hear about peanut-free…

10 Foods That Trigger More Allergies Than Peanuts
common food allergies
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When you think of food allergies, what comes to mind first? For most people, it’s peanuts. We hear about peanut-free schools and see warning labels on countless products. As a result, the peanut allergy has become the poster child for food-related immune responses. While it is a serious and common allergy, it’s far from the only one. In fact, several other foods are more likely to cause allergic reactions.

Understanding the most common food allergies is crucial for your health and the safety of those around you. Some of these might surprise you. Here are 10 foods that are statistically more common allergens than peanuts, which affect roughly 1% of the population.

1. Cow’s Milk

This is the most common food allergy in infants and young children. A milk allergy is an immune reaction to the proteins found in cow’s milk, like casein and whey. It is not the same as lactose intolerance, which is a digestive issue.

Symptoms can range from hives and stomach upset to life-threatening anaphylaxis. While many children outgrow it, a milk allergy can persist into adulthood. It is also found in so many processed foods, which makes it very difficult to avoid.

2. Eggs

An egg allergy is another one of the most common food allergies, especially in children. The body’s immune system reacts to proteins in either the egg whites or the yolk. Like a milk allergy, many children will outgrow an egg allergy by the time they are teenagers.

Eating eggs or even exposure to egg-based ingredients in vaccines, like the flu shot, can trigger reactions. It requires careful label reading, as many products use eggs as a binding agent.

3. Soy

Soy is a member of the legume family, just like peanuts. An allergy to soy is very common, particularly in babies, because it is a frequent ingredient in infant formula. Symptoms often involve skin rashes, such as eczema, and digestive problems.

Avoiding soy is a major challenge. It’s found in tofu, edamame, and soy sauce. However, it’s also hidden in baked goods, cereals, and processed meats. Many people who are allergic to soy are also allergic to other legumes.

4. Wheat

A wheat allergy is an immune reaction to any of the proteins present in wheat. People often confuse it with celiac disease, but they are different conditions. Celiac disease is an autoimmune disorder, while a wheat allergy is a true allergic response.

A wheat allergy can cause a range of symptoms, from skin rashes to breathing difficulties. Furthermore, it is one of the top allergens in both children and adults. Following a wheat-free diet means avoiding not just bread and pasta, but also many sauces, soups, and even some cosmetics.

5. Fish

Allergies to finned fish, such as salmon, tuna, and cod, are more common in adults than in children. Unlike many childhood allergies, a fish allergy is usually lifelong. The main allergen is a protein called parvalbumin.

An allergic reaction can be severe. In fact, even exposure to cooking vapors can trigger symptoms in highly sensitive individuals. For this reason, doctors often advise people who are allergic to one type of fish to avoid all types.

6. Shellfish

This is one of the most common food allergies in adults and is responsible for a large number of emergency room visits. This category is divided into two groups: crustaceans (like shrimp, crab, and lobster) and mollusks (like clams, mussels, and oysters).

Crustacean allergies are more common and tend to cause more severe reactions. A shellfish allergy typically develops in adulthood and lasts a lifetime. It is a very dangerous allergy that requires strict avoidance.

7. Tree Nuts

While peanuts are technically legumes, tree nuts grow on trees. This category includes almonds, walnuts, cashews, and pistachios, among others. Allergies to tree nuts are very common and can be extremely severe.

If you are allergic to one type of tree nut, you have a higher chance of being allergic to others. Because of the risk of cross-contamination in processing facilities, many people with a tree nut allergy must avoid all nuts, including peanuts.

8. Sesame

Sesame is a growing public health concern, and its prevalence as an allergen is on the rise. In the United States, it was recently named the ninth major food allergen, which requires its listing on food labels. Many experts now consider it to be more common than some other well-known allergens.

You can find sesame in obvious places, like on hamburger buns, and in less obvious ones, like dressings, dips (tahini), and sauces. Reactions can be just as severe as those to peanuts.

9. Mustard

In some parts of the world, like Canada and Europe, officials consider a mustard allergy a top allergen and require it to be declared on food labels. Its prevalence is thought to be significant, and it can cause severe reactions, including anaphylaxis.

Mustard is not just a condiment. It is used as a spice in many marinades, rubs, and processed foods. Consequently, it is often a hidden ingredient, making it particularly dangerous for those with an allergy.

10. Corn

Corn is one of the most pervasive ingredients in the modern food supply, which makes a corn allergy incredibly challenging to manage. While its prevalence is still being studied, many believe it to be a very common trigger for allergic reactions.

Corn can appear as cornstarch, corn syrup, corn oil, and dozens of other derivatives. It is used in everything from sodas to sauces. Reactions can vary widely, from mild intolerance to severe allergic responses.

Beyond the Peanut Gallery

Focusing only on peanuts gives a dangerously narrow view of food allergies. Cow’s milk, eggs, soy, and wheat are far more common culprits, especially in children. In adults, shellfish and fish allergies are major concerns. Being aware of the full spectrum of common food allergies is essential for preventing, diagnosing, and managing these potentially life-threatening conditions. Always read labels carefully and consult with an allergist if you suspect you have a food allergy.

Does anyone in your family have one of these allergies? Share your experience in the comments.

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