There are some things you can do that may help prevent your child developing a food allergy. These include:  if you are pregnant or breastfeeding, include foods (the ones that can cause allergic reactions) in what you regularly eat  breastfeed if you can   introduce solid food at around 6 months of age  give your child to a variety of foods to eat see your doctor if your child has a reaction to a food.   1. Include allergenic foods in your diet Pregnant and breastfeeding mothers should eat a healthy, balanced diet, including allergenic foods. Cutting allergenic foods out will not prevent food allergy in your infant. […]