Children who came into the world by Caesarean section are more often affected by allergies than those born in the natural way. The reason for this may be that they have a less diverse gut microbiota, according to a study by universities in Sweden and Scotland.
For expectant moms who may contemplate the pros and cons of natural child birth or Caesarian section, a Henry Ford Hospital study suggests that C-section babies are susceptible to developing allergies by age two.
Babies born by Caesarean section may be at greater risk of diarrhoea and sensitisation to certain foodstuffs during their first 12 months than babies born vaginally, suggests research in the Archives of Disease in Childhood.
The researchers who reported last year that more male babies than expected were being born to Indian-born women living in Canada have now found the numbers are driven by women whose mother tongue is Punjabi and, to a lesser extent, Hindi.
A review of studies of babies born after in vitro maturation (IVM) fertility treatment has suggested that they are more likely to be born larger than normal and to have more difficult births requiring more obstetric interventions such as caesareans.
Medical experts point to a disturbing trend of expectant mothers who are choosing to deliver their babies for non-medical reasons before 39 weeks of pregnancy.
Scientists believe they may have identified a biological explanation for the link between cesarean-section delivery and risk of allergy and asthma in childhood. They will present their findings at the American Thoracic Society's 2008 International Conference in Toronto on Tuesday, May 20.
A new paper in the British Medical Journal by Jan Blustein, M.D., Ph.D., of New York University's Wagner School and a professor of Medicine and Population Health at NYU School of Medicine and Jianmeng Liu, M.D., Ph.D., of Peking University examines the evidence as to whether newborns delivered by Cesarean section are more likely to develop chronic diseases later in life.