The number of people with food allergies is increasing, and the number of foods to which people are allergic is also growing. In the United States, nearly 4% of people have a food allergy. In 2021, the FASTER (Food, Allergy Safety, Treatment, Education, and Research) Act was signed into law, making sesame the ninth major food allergen in the United States. The most common food allergies in children are allergies to peanuts, milk, shellfish, and tree nuts. The most common food allergies in adults are allergies to shellfish, milk, peanuts, and tree nuts. An antibody drug, Xolair, is a drug that can help reduce allergic reactions to multiple foods. Also, Peanut Allergen Powder is the first oral immunotherapy drug for treating children ages 4–17 with a confirmed peanut allergy.