Data from Asia, US and Europe finds 23% do not gain enough weight and more than 50% gain too much, increasing risk of premature birth and caesareans A comprehensive new study has found 75% of women are not gaining a healthy recommended weight when pregnant. Gaining too little or too much weight during pregnancy increased the risk of premature births or requiring caesareans, it said, and the prevalence of both obesity and excess gestational weight gain was increasing. The international research team, led by Monash University researchers, examined more than 5,000 previous studies and analysed pregnancy data from three groups across Asia, the US, and Europe, but noted it was limited by a lack of studies from developing nations.

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