Research on prevention addresses the question of whether it is possible to reduce the risk of developing an allergy in the first place. Reviews concluded that there is no strong evidence to recommend changes to the diets of pregnant or nursing women as a means of preventing the development of food allergy in their infants. For mothers of infants considered at high risk of developing cow's<unk>  because of a family history, there is some evidence that the nursing mother avoiding allergens may reduce risk of the child developing eczema, but a Cochrane review concluded that more research is needed. Guidelines from various government and international organizations recommend that for the lowest allergy risk, infants be exclusively breastfed for 4–6 months. There does not appear to be any benefit to extending that period beyond six months. If a nursing mother decides to start feeding with an infant formula prior to four months the recommendation is to use a formula containing cow's<unk>  proteins. A different consideration occurs when there is a family history – either parents or older siblings – of<unk> . The three options to avoiding formula with intact cow's<unk>  proteins are substituting a product containing either extensively hydrolyzed<unk>  proteins, or a non-dairy formula, or one utilizing free amino acids. The hydrolyzation process breaks intact proteins into fragments, in theory reducing allergenic potential. In 2016, the U.S. Food and Drug Administration (FDA) approved a label claim for hydrolyzed whey protein being hypoallergenic. However, a meta-analysis published the same year disputed this claim, concluding that, based on dozens of clinical trials, there was insufficient evidence to support a claim that a partially hydrolyzed formula could reduce the risk of eczema. Soy formula is a common substitution, but infants with<unk>  may also have an allergic response to soy formula. Hydrolyzed rice formula is an option, as are the more expensive amino acid-based formulas.
Milk allergy
Lactose intolerance  Lactose intolerance  1
Egg allergy
Peanut allergy
Corn allergy
Soy allergy
Poultry allergy
Latex allergy