Diet is the cornerstone of tree nut allergy management. People with tree nut allergies need to carefully plan their diets to avoid eating certain tree nuts. This means also avoiding foods that contain or may be contaminated with tree nuts, such as food products made in facilities that use nuts in other products, which is a potential source of cross-contamination. Most countries require that food labels clearly state whether a food contains tree nuts, and many labels voluntarily state whether cross-contamination is possible, so checking the label on all packaged food items is important for people with allergies.
Diet may even play a role in allergy prevention. Early introduction of allergenic foods (by approximately 6 months of age) alongside continued consumption reduces the risk of developing food allergies.[1][2][3]