Wet nurse

A wet nurse is a woman who breastfeeds and cares for another's child. Wet nurses are employed if the mother dies, or if she is unable or chooses not to nurse the child herself. Wet-nursed children may be known as "milk-siblings", and in some cultures, the families are linked by a special relationship of milk kinship. Wet-nursing existed in cultures around the world until the invention of reliable formula milk in the 20th century. The practice has made a small comeback in the 21st century. A wet nurse can help when a mother is unable or unwilling to breastfeed her baby. Before the development of infant formula in the 20th century, wet-nursing could save a baby's life. There are many reasons why a mother is unable to produce sufficient breast milk, or in some cases to lactate at all. For example, she may have a chronic or acute illness, and either the illness itself, or the treatment for it, reduces or stops her milk. This absence of lactation may be temporary or permanent. There was a greater need for wet nurses when the rates of infant abandonment and maternal death, during and shortly after childbirth, were high. There was a concurrent availability of lactating women whose own babies had died. Some women chose not to breastfeed for social reasons. For upper-class women, breastfeeding was considered unfashionable, in the sense that it not only prevented them from being able to wear the fashionable clothing of their time, but it was also thought to ruin their figures. Working women faced other pressures to abandon breastfeeding, including from their husbands. Hiring a wet nurse was less expensive than having to hire someone else to help run the family business and/or take care of the family household duties in their place. Some women chose to hire wet nurses purely to escape from the confining and time-consuming chore of breastfeeding. Wet nurses have also been used when a mother cannot produce sufficient breast milk. A woman can only act as a wet nurse if she is lactating (producing milk).