These studies explore breastmilk composition, the effect of breastfeeding on growth, the portrayal of breastfeeding in the media and the introduction of solids.
Portrayal of infant feeding in women’s magazines
This study explored the written and visual portrayal of infant feeding in women’s weekly magazines in Britain and Ireland. Breastfeeding and formula feeding written references were found in equal number, and both were portrayed predominantly positively. However, there was only one visual representation of breastfeeding, compared with 11 of bottle feeding. The magazines identified numerous barriers to breastfeeding, including concerns about adverse health benefits. The authors concluded that an improvement in visual representations of and factual information about breastfeeding may be helpful in re-defining social norms about infant feeding.
Nutrition and health-related claims on pre-packaged foods – A five country study in Europe
This study mapped the prevalence of symbolic and non-symbolic nutrition and health-related claims (NHC) on foods and non-alcoholic beverages in five European countries. At least one claim was identified for 26% of all foods and drinks sampled. Eight percent of the health claims were children’s development and health claims but these were only observed on less than 1% (0.4%–1.1%) of the foods.
In this article, the author discusses baby-led weaning (BLW) as an approach to the introduction of solid foods. She argues that while there is currently little direct evidence to justify the approach, there exists a range of research that provides support for the principles that underpin it, including the developmental readiness of infants to feed themselves using their hands, and their innate ability to respond appropriately to both appetite and satiety. She contends that BLW in its practical application is in line with current weaning recommendations and there is tentative evidence that suggests it may lead to positive health outcomes. The author concludes that health visitors should be prepared to discuss BLW with parents.
Methods of introducing solid food and impact on food preferences and body mass index (BMI)
The authors examined whether two different styles — spoon feeding or self-feeding, also known as baby-led weaning — influenced food preferences and health-related outcomes.A total of 155 parents recruited through the Nottingham Toddler Laboratory and relevant internet sites completed a questionnaire concerning infant feeding style and introduction of solid food (baby-led=92, spoon-fed=63, age range 20–78 months); their child’s preference for 151 foods (analysed by common food categories, e.g. carbohydrates, proteins, dairy); and exposure (frequency of consumption). Food preference and exposure data were analysed using a case–controlled matched sample to account for the effect of age on food preference. All other analyses were conducted with the whole sample.
The authors concluded that results suggested infants who were introduced to solid food through the baby-led approach learned to regulate their food intake in a manner which leads to a lower BMI and a preference for healthy foods like carbohydrates. The authors postulate that this “has implications for combating the well-documented rise of obesity in contemporary societies.”
Ellen Townsend, Nicola J Pitchford (2012) Baby knows best? The impact of weaning style on food preferences and body mass index in early childhood in a case–controlled sample. BMJ Open 2012;2:e000298 doi:10.1136/bmjopen-2011-000298
Premature delivery influences composition of breastmilk
Human milk samples were collected from mothers delivering at term, preterm, and very preterm. Milk from the mothers was collected at 3 different time points after delivery corresponding to colostrum, transitional and mature milk and then concentrations of a range of immune factors and growth factors measured. Term and preterm colostrum were found to have very high levels of immune and growth factors, with some levels being higher in the preterm colostrum. However, the very preterm colostrum had lower levels of some factors than in term milk. The authors conclude that maternal lactogenic compensatory mechanisms may take effect only after 30 weeks gestation.
Cristina Castellote, Rosario Casillas, Carolina Ramirez-Santana, Francisco J. Perez-Cano, Margarida Castell, M. Gloria Moretones, M. Carmen Lopez-Sabater, and Angels Franch. Premature delivery influences the immunological composition of colostrum and transitional and mature human milk. J Nutr. 2011 Jun; 141(6):1181-7. Epub 2011 Apr 20.
“Fussy” infants more likely to receive food before 4 months
This study looked to assess early infant-feeding patterns in a cohort of low-income black mothers in the United States and to examine associations between maternal perception of infant temperament and complementary feeding before 4 months. It was hypothesised that a “fussy” infant temperament may lead parents to use food as a soothing technique.
The researchers used cross-sectional data from the 3-month visit (n = 217) of the Infant Care, Feeding and Risk of Obesity Study to assess relationships between early feeding of solids or juice and 6 dimensions of perceived infant temperament. The authors concluded that low-income black mothers may represent a priority population for interventions aimed at improving adherence to optimal infant feeding recommendations. That maternal perceptions of several aspects of perceived infant temperament are related to early complementary feeding suggests that this is an important factor to include in future observational research and in the design of interventions.
Breastfeeding may support earlier hospital discharge for moderately preterm infants
Moderately preterm infants (30-34 weeks) account for a large proportion of admissions and bed-days in neonatal units. A large study (2,388 infants) of the postmenstrual age (PMA) at hospital discharge and its relationship to perinatal risk factors and to organisation of care was carried out in Sweden. The researchers found that average PMA at discharge was 36.9 weeks. High (35 years) maternal age, multiple birth, small for gestational age, respiratory distress syndrome, infection, hypoglycaemia and hyperbilirubinaemia were significantly associated with higher PMA at discharge, but could only explain 13 per cent of the differences. Mean PMA at discharge differed by up to two weeks between hospitals. Infants treated at units without fixed discharge criteria had 4.7 days lower PMA at discharge and infants receiving domiciliary care had 9.8 days lower PMA at discharge. Breastfed infants also had lower PMA at discharge (mean 2.7 days lower) than those not breastfed, partly explained by lower morbidity in the breastfed infants and the researchers recommend that supporting the establishment of successful breast feeding in preterm infants should therefore be given high priority in neonatal care.