![]() ![]() Another possibility is that hormones released during labor might play a role in minimizing risk, she said. Why C-sections might lead to chronic health problems isn’t clearly established, but one prevailing theory is that women may pass “good” bacteria to babies during a vaginal delivery that protects against disease, Blustein said. Obesity develops in 19.4 percent of children delivered by C-section, compared with just 15.8 percent for vaginal births, the study found. In the U.S., where about one third of deliveries are by C-section, 2.13 of every 1,000 babies born this way develop type 1 diabetes, compared with 1.79 per 1,000 infants delivered vaginally, the study found.Ībout 9.5 percent of C-section babies develop asthma, compared with 7.9 percent for vaginal births. ![]() They also found 23 studies connecting surgical deliveries to asthma and nine suggesting a tie to obesity. When they analyzed past research, they found 20 studies linking C-sections to childhood type 1 diabetes. In many countries – including the U.S., Mexico, Brazil, Australia and Italy – C-section rates are more than double the level WHO recommends.īlustein and co-author Jianmeng Liu of the Institute of Reproductive and Child Health in Beijing write in The BMJ that C-section rates are unnecessarily high in some countries in part because some surgical deliveries are elective, done only because women requested them, and because mothers who have one C-section are often encouraged to deliver this way again. That’s the approximate proportion of births that require surgical intervention to protect the mother or infant in situations such as prolonged labor, fetal distress or a breech baby. Ideally, no more than 15 percent of deliveries should be C-sections, according to the World Health Organization. “The magnitude of risk elevation is small, but even when we are talking about increasing the risk modestly, we still need to talk about it.” “It’s a discussion that’s important to have in view of the rising rate of C-sections,” said Blustein, a professor of medicine and health policy at New York University. But the link is strong enough that mothers should discuss the risk with their doctor or midwife when weighing whether to proceed with a C-section, particularly when a vaginal delivery may be possible, said lead study author Dr. Much of the research included in the study cannot prove these surgical deliveries cause medical issues later in life. A baby is delivered through a Caesarean section in the labour and delivery unit at the Escuela hospital in Tegucigalpa September 3, 2013. ![]()
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