The American Academy of Pediatrics (AAP), breastfeeding and atopic disease:
The AAP expressed that at least 3- 4 months of breastfeeding is associated with a reduced rate of asthma and chronic skin disorders that involve scaly and itchy rashes (atopic dermatitis, eczema) of 27% in infants at low-risk and 42% for infants at high risk. Research examined by the AAP found conflicting data on whether the addition of food after 4 months reduces the risk of allergies (food allergies, atopic dermatitis, and asthma). Additionally, the AAP found that waiting to introduce food until after the age of 6 months has also not been proven to reduce allergies. (1)