Abstract
Receiving donor human milk for a baby can have a protective effect upon parental wellbeing. A growing body of research also finds that being able to donate milk to a milk bank, particularly after infant loss, can also boost maternal wellbeing through feelings of altruism and purpose. However, most studies are qualitative, with small sample sizes outside the United Kingdom, and often do not include the experiences of those who have been unable to donate. Our aim was therefore to examine the impact of being able to donate milk, as well as the impact of not being able to do so, using a survey containing open and closed questions in a large UK sample. Overall, 1149 women completed the survey, 417 (36.3%) who donated their milk and 732 (63.7%) who did not. Most women who donated found it had a positive impact upon their wellbeing, feeling proud, useful and that they had achieved something important. Conversely, those unable to donate often felt rejected, frustrated, and excluded, especially if they received no response or felt that restrictions were unfair. Thematic analysis found that being able to donate could help women heal from experiences such as birth trauma, difficult breastfeeding experiences, neonatal unit stays, and infant loss; however, being unable to donate could exacerbate negative emotions arising from similar experiences. A minority of women who donated experienced raised anxiety over following guidelines. These findings further extend the impacts of milk banking services beyond infant health and development and support expanded service delivery.