For many years 'Eating for two' meant expectant mothers could eat without worrying too much about the consequences.
Unfortunately extra weight gained in pregnancy is difficult to shift.
There's always a risk extra kilograms will stick around and even increase with subsequent pregnancies.
Nutritionists are now concerned that mothers who gain too much weight during pregnancy risk passing obesity on to their children.
Deakin University School of Exercise and Nutrition Science are trying to find ways to promote healthy diet, physical activity and gestational weight gain in overweight pregnant women.
In this week's Babytalk Podcast you'll hear from Professor Karen Campbell and Associate Professor Kylie Hesketh about their research into gestational weight gain and ways they're trying to help women get an understanding of how to maintain a healthy weight during pregnancy.