Any person, baby or adult, can be allergic to food. An allergy is your immune system trying to defend your body from something it thinks is harmful. The most common food allergies in babies are to milk, eggs, nuts, soy and wheat.
Most jarred baby foods do not contain these common allergens, but you should always read the ingredients to be sure you know what you are feeding your baby.
When you introduce solid foods to your baby, introduce them one at a time and wait three to five days after introducing a new food before introducing another one. This way if you baby exhibits any signs of allergies, such as symptoms of the skin, stomach or respiratory system, you will be able to pinpoint what food is causing the symptoms. Take your child to an allergist for a diagnosis if he or she displays symptoms of food allergies.