Many parents have heard that early introduction of allergenic foods (within the first year of life) helps to prevent food allergy later in life. There are several studies suggesting that early introduction of peanut and egg improves a child’s chance of not having allergies to those foods later in life. In particular, early introduction of egg and peanut is recommended for infants at risk of developing food allergy (at-risk criteria include moderate-severe eczema requiring prescription creams/ointments, as well as existing food allergy). Many allergists have extrapolated from these data, and recommend introducing all types of allergenic foods, such as tree nuts, sesame, wheat, cows milk, and seafood during the first year of life. Note that this recommendation is not yet supported by clinical trials, and may not have as protective of an effect as early introduction of egg and peanut. Early introduction of these foods does not prevent all food allergies, and it is still possible to develop food allergies despite efforts to include them in the diet early in life.