There was an article on baby allergies in yesterday's issue of the Philippine Daily Inquirer. One thought-provoking hypothesis mentioned in the article:

Also an interesting hypothesis (hygiene hypothesis) proposes that limited exposure to bacteria, especially in early life, due to extremely sterile surroundings may also increase the risk of allergy. So, clean environment for the baby is good, but “sterile” rooms –supposed to be a privilege of urban affluence – may deprive the babies the chance to develop the babies’ immune system.

The article doesn't say whether there is any data to support this hypothesis, though. Another useful excerpt:

The risk of allergy from milk preparations is one strong argument for breastfeeding. Dr. Smith stresses that it still remains as the best and earliest step that can be taken for dietary protection against allergy, regardless of family history. He explained that breast milk provided a naturally hypoallergenic milk protein that significantly reduces the risk of allergy. Also, breast milk contains antibodies and probiotics (live, good bacteria) like bifidobacteria that help strengthen the infant’s immune system.

Both my husband and I have histories of allergies, and my son already has eczema. I hope that he doesn't develop many allergies growing up.

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