Experiencing mental health issues during pregnancy and after birth can have implications for how womens parenting, including how they feed their children which can impact on child weight outcomes. This research will examine the impact of prenatal mental health (such as anxiety, depression and stress) on women's feelings towards pregnancy and intentions and attitudes to feeding, how they feed their child (in terms of breastfeeding and diet), and child body mass index. These findings can help inform how best to support women and their children.