The phrase "Foods that people are allergic to" refers to specific types of food or ingredients that can cause an adverse reaction in certain individuals due to their immune system's response. These reactions can range from mild, such as itching and hives, to severe, including difficulty breathing or even death. Common allergens include peanuts, tree nuts, fish, shellfish, eggs, milk, soybeans, wheat, and sesame seeds. People who have food allergies must be cautious about consuming these items in order to avoid a potentially life-threatening reaction.