Decreasing retinol and α-tocopherol concentrations in human milk and infant formula using varied bottle systems

Micronutrients in Human Milk: Analytical Methods

Exclusive breastfeeding is recommended by the WHO for the first 6 mo of life because human milk protects against gastrointestinal infections and supplies balanced and adequate nutrient contents to the infant. However, reliable data on micronutrient concentrations in human milk are sparse, especially because some micronutrients are affected by maternal diet. Microbiological and competitive protein-binding assays, nuclear magnetic resonance or inductively coupled plasma spectroscopy, and chromatographic analyses are among the methods that have been applied to human-milk micronutrient analysis. However, the validation or evaluation of analytical methods in terms of their suitability for the complex human-milk matrix has been commonly ignored in reports, even though the human-milk matrix differs vastly from blood, plasma, or urine matrixes. Thus, information on the validity, accuracy, and sensitivity of the methods is essential for the estimation of infant and maternal intake requirements to support and maintain adequate milk micronutrient concentrations for healthy infant growth and development. In this review, we summarize current knowledge on methods used for analyzing water- and fat-soluble vitamins as well as iron, copper, zinc, iodine, and selenium in human milk and their different forms in milk; the tools available for quality control and assurance; and guidance for preanalytical considerations. Finally, we recommend preferred methodologic approaches for analysis of specific milk micronutrients.

‘Neoliberal motherhood’: Workplace lactation and changing conceptions of working motherhood in the contemporary US

Through an analysis of policy texts, population statistics, and the popular press, this article advances knowledge about working motherhood in the contemporary US and proposes a refinement to how wage-work/care-work relations are conceptualised. I focus on the Patient Protection and Affordable Care Act of 2011 which grants certain rights and protections to women seeking to combine lactation with wage-work. I argue that this policy represents a form of work–life integration that is particularly burdensome for working mothers, and that expectations relating to working motherhood in the contemporary US are being reshaped around the demands of neoliberalism, producing what I term ‘neoliberal motherhood’. I assert that this policy represents a way of combining wage-work and care-work that is not captured within existing conceptualisations, and suggest that a re-working of theory in this area is needed to address cases in which embodied care-work is enfolded within the time and space of wage-work.

Maintaining the 'good maternal body': expressing milk as a way of negotiating the demands and dilemmas of early infant feeding

AIM

To report a descriptive study of early infant feeding experiences focusing on ACCOUNTS OF WOMEN WHO EXPRESSED MILK EXTENSIVELY IN THE FIRST FEW WEEKS POSTPARTUM.

BACKGROUND

Relatively little is known about the reasons for expressing milk following healthy term births. Evidence indicates it is an increasingly common practice during early infant feeding in Westernized countries. A more comprehensive understanding of this practice will help midwives and nurses assist mothers negotiate early feeding challenges.

DESIGN

Qualitative data were collected in two phases in the first few weeks postpartum.

METHOD

Audio-diary and semi-structured interview data from seven British women who extensively expressed milk in the first month postpartum were analysed. These data were drawn from a larger qualitative longitudinal study which took place in 2006-2007. Themes, discursive constructions and discourses are identified through the use of a feminist informed analysis.

FINDINGS

The practice of expressing was employed as a solution to managing the competing demands and dilemmas of early breastfeeding and ensuring the continued provision of breast milk, thereby deflecting potential accusations of poor mothering. In addition, the practice may afford a degree of freedom to new mothers.

CONCLUSIONS

The need to maintain the 'good maternal body' can account for the motivation to express milk, although there may be reasons to be cautious about promoting expression as a solution to breastfeeding difficulties. Education for health professionals, which emphasizes the complexities and contradictions of mothering and which challenges prescriptive notions of 'good mothering' could better support new mothers in their feeding 'choices'.