Breastfeeding rates are also socially patterned, being substantially lower within socially deprived communities. While there is a wealth of evidence that breast/breast-milk feeding optimizes infant and maternal health, the UK has one of the lowest breastfeeding rates globally. Infant feeding is a key public health issue. The Creative Commons Public Domain Dedication waiver ( ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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