Recommendations about allergy prevention through diet are rapidly changing. In just the past several years, multiple organizations have provided updated guidance and recommendations about infant feeding based on recent studies and meta-analyses. In addition to the increased number of studies supporting the benefit of early introduction of allergenic foods, in particular peanut and egg, recent studies demonstrate that infant and maternal diet diversity may also reduce risk of food allergy and atopy. Skin emollients have not been found to be helpful in prevention of food allergy, and more evidence is needed to determine if emollients play a role in prevention of atopic dermatitis.