Women who do not breastfeed their babies are at a higher risk of postnatal depression, according to a major study of more than 10,000 mothers.
The study revealed a complex relationships between mothers' intentions and their ability to breastfeed, and their risk of developing depression after their child's birth - a condition which affects around one in 10 women.
Mothers who breastfed their baby were 50 per cent less likely to suffer postnatal depression than those who chose not to. However, the women most at risk of developing the condition were those who had planned to breastfeed their babies but were unable to.
This group was twice as likely to suffer depression than mothers who simply chose not to breastfeed.
The researchers said that more support needed to be given, both to encourage mothers to breastfeed, and also support those women who find they are unable to.