I remember reading a comparison of pain perception of children born naturally and with a c-section. I think, the conclusion was c-section children have lower cortisone levels after birth and so cry less. There was a supposed link to how they then percieve pain later in life, c-section kids being more tolerant. Given the huge variety of factors influencing pain perception, it seems a big leap. Curiously, it does bear true for my two, one natural, stresful birth and one c-section delivered to mothers favourite music (but not the paediatricians
).
