C-Section Births Tied to Obesity

Researchers suspect link relates to bacteria exposure

By Mark Russell,  Newser Staff

Posted May 24, 2012 10:01 AM CDT

(Newser) – Caesarian sections are on the rise in the United States, but a new study out yesterday indicates that the surgical birth method may have an unexpected consequence. It found that babies born by C-section are twice as likely to be obese by age three, reports the Washington Post. Researchers reviewing the records of 1,255 mothers and babies discovered that 7.5% of those born vaginally were obese at three, vs. 15.7% of those born by C-section.

The Post notes that while both the mothers and babies in the C-section group were heavier, the researchers controlled for factors like the mother's weight, baby's size, and how long the baby was breastfed. The researchers' theory: The surgical procedure could affect how babies acquire important digestive bacteria from their mothers, which could in turn alter the way their bodies digest food. Babies born by C-section rose to 32% in 2007, up from 20.7% in 1996. (Another possible obesity factor? Fungicide.)

A new study shows that babies born by C-section are twice as likely as those born vaginally to be obese by 3 years old.
A new study shows that babies born by C-section are twice as likely as those born vaginally to be obese by 3 years old.   (Shutterstock)
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