A study of German babies showed a higher risk of food allergies and diarrhea for those born by Caesarean section. The healthy, full-term babies were all exclusively breastfed for the first four months, during which time no such effect was seen. However, blood samples taken at 12 months showed that C-section babies were twice as likely as vaginally-delivered babies to have allergies to five common food allergens, including eggs, cow's milk, and soy protein. They were also 46% more likely to suffer from diarrhea during the first year.

These findings are consistent with previous research which demonstrated the importance of intestinal bacteria in the development of a healthy immune system. Babies who experience a normal delivery pick up vaginal, intestinal, and perianal microbes from their mothers. The risk to babies born by C-section includes not only deprivation of normal microbes, but also exposure to the unnatural microbial ecosystem peculiar to a hospital environment.
posted by sursumcorda on Thursday, October 21, 2004 at 10:33 AM
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