Several studies have suggested in which babies born by cesarean section are at higher risk for obesity in childhood than those born vaginally, perhaps because of differences from the babies’ microbiomes. although a brand new analysis suggests in which mode of birth has no effect on body mass index in children.
The brand new study, in JAMA Pediatrics, used a large clinical database to study 16,140 siblings born between 1987 in addition to 2003 in addition to their 8,070 mothers. Of these, there were 2,052 siblings of whom one was delivered vaginally in addition to one by cesarean section. Looking at these sibling pairs eliminates most various other variables in which could affect childhood B.M.I., such as socioeconomic factors, the health in addition to weight of the mother, race in addition to ethnicity, to ensure in which the effect of mode of delivery alone can be determined.
Although the study did find some difference between families, there was no significant difference within families in obesity at age 5 between babies born vaginally in addition to those born by C-section.
The results “suggest in which unmeasured variables — lifestyle or sociocultural factors — might account for the observed associations in which were seen in various other studies,” said the lead author, Sheryl L. Rifas-Shiman, a research analyst at Harvard Medical School. “Reducing C-section delivery rates will not have a big effect on the ongoing obesity epidemic.”