Food allergies occur when the body's immune system mistakenly identifies certain foods as harmful. This can lead to various symptoms, such as hives, swelling, stomach pain, or even severe reactions like anaphylaxis. Common allergens include peanuts, tree nuts, milk, eggs, wheat, soy, fish, and shellfish. When someone with a food allergy eats the offending food, their body reacts as if it is under attack. To stay safe, individuals must carefully read food labels and avoid cross-contamination. It's essential for friends and family to understand these allergies to help create a safe eating environment for those affected.