Women who gain excessive weight during pregnancy are at higher risk of having overweight or obese children, according to a study published in the journal PLOS Medicine.
Researchers from Boston Children's Hospital, Massachusetts, conducted a population-based cohort study of 42,133 women who had more than one singleton pregnancy and their 91,045 children.
The study involved matching records of all live births in Arkansas with state-mandated data on childhood body mass index (BMI) and height from public schools between 2003 and 2011.
The researchers wanted to determine whether childhood obesity is due to conditions during pregnancy, which can influence birthweight, or whether other shared mother and child factors, such as genes and diet, play a part.
The results of the study showed that on average, mothers gained around 14 kg in each pregnancy.
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