This is interesting. Obviously anyonewho needs a C sectino for medical reasons does absolutely the right thing but I bet there are lots of natural reasons why vaginal birth is better if you can manage it. I was lucky enough to have 5 vaingal births.
In today's Times
"While a baby is in the womb, his or her gut is sterile and the seed inoculation of their microbiota is picked up during the birthing process as they come into contact with organisms living in and around their mother?s vagina. This initial culture is nurtured further by prebiotics in breast milk that favour the growth of certain species, particularly ?healthy? bifidobacter.
Babies delivered by Caesarean section miss out on this initial inoculation and end up with a very different mix of species ? a difference that can be compounded by formula-feeding instead of breastfeeding. As a result, the immune systems of the two groups of children mature differently because of altered signalling from the microbiota ? one reason thought to explain why babies delivered by Caesarean section are 20 per cent more likely to develop asthma. "