"Breastfeeding has well established benefits to babies, in terms of their physical health and cognitive development; our study shows that it also benefits the mental health of mothers," said Cambridge University's Dr Maria Iacovou, who coauthored the study. "In fact, the effects on mothers' mental health are also likely to have an impact on babies, since maternal depression has previously been shown to have negative effects on many aspects of children's development."
The study is published in the journal Maternal and Child Health today.
According to Department of Health figures, almost three quarters of UK mothers began breastfeeding their babies at birth in 2012/13, but only 47 per cent continued breastfeeding until the baby was between six and eight weeks old.
Rosemary Dodds, senior policy adviser at the National Childbirth Trust said: "Mothers often experience pressures after the birth such as pain, shortage of sleep and anxiety. Breastfeeding can help to relax mothers and reduce stress, so it might play a part in preventing mental health issues developing. We welcome further research into this subject as perinatal mental health is a huge issue for many mothers."