This study found that women who delivered by caesarean tended to weigh more than those delivering vaginally, and the birthweight for gestational age of their babies also tended to be higher. These mums also breastfed their babies for a shorter period (and we know that there are links between shorter duration of breastfeeding and childhood obesity).
But irrespective of birth weight, and after taking account of maternal weight, a caesarean was associated with a doubling in the odds of obesity by the time the child was three years old.
The researchers speculate that one possible explanation for their findings is the difference in the composition of gut bacteria acquired at birth between the two delivery methods.
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