Objective:
The World Health Organization recommends that low birth weight infants receive donor human milk (DHM) when mother’s milk is not available. Systematic reviews have been published regarding clinical outcomes of infants receiving DHM, as well as the impact of pasteurization on the composition of DHM; however, information about milk bank donors has not been systematically assessed.
Design:
We conducted a systematic scoping review of original research articles about milk bank donors published before August 2020.
Results:
A total of 28 studies were included across a variety of geographies: United States (n=8), Brazil (n=7), Spain (n=4), India (n=2), and single studies in France, Norway, Poland, Italy, Taiwan, Korea, and China. Study variables were grouped into 6 main categories: Donor Demographics (n=19), Clinical Characteristics (n=20), Donor Experiences (n=16), Donation Patterns (n=16), Lifestyle Characteristics (n=4), and Lactation/Breastfeeding History (n=8). Some demographic characteristics were commonly reported across regions, while other, including gender and race were infrequently explored. Factors that might influence the composition of DHM, including birth timing (term or preterm), milk type (colostrum, transition or mature), and maternal diet were not regularly studied. Other gaps in the literature included: donors’ motivations and barriers to donation; lactation and breastfeeding history, including factors that influence donors to pump and amass surplus milk; and donation patterns, including whether donors are also selling milk to corporations or sharing milk with peers.
Conclusion:
What is known about milk bank donors in different geographies is often limited to a single study, with heterogeneity in the variables reported.