My son was born by caesarean section, although my wife and I really wanted our son born vaginally. My wife's friend has had two successful vaginal births. She wants the third child to be born by caesarean section. This is just because delivery by caesarean section is simple.
This situation makes me very curious about what the differences actually are between a child who was delivered vaginally and a child delivered by caesarean section. I heard from others that children from vaginal births have more resilient bodies and are smarter than children who were born by caesarean section.
Are these claims scientifically proven? Are there really any differences? Good references would be helpful.