A detailed exploration of early infant milk feeding in a prospective birth cohort study in Ireland: combination feeding of breast milk and infant formula and early breast-feeding cessation

Mild-to-moderate iodine deficiency among pregnant women in Ireland: data from a large prospective pregnancy cohort

PURPOSE

Adequate maternal iodine status is essential for healthy foetal brain development. There are no current data on maternal iodine status in Ireland. The aim of this study was to conduct the first large-scale assessment of maternal iodine status in Ireland and identify its sociodemographic determinants using data from a large prospective pregnancy cohort.

METHODS

Participants were nulliparous females (n = 1509) recruited at Cork University Maternity Hospital, Cork, Ireland. Clinical and questionnaire-based assessments were carried out and spot urine samples were collected throughout pregnancy. Urinary iodine concentration (UIC) at 11 and 15 weeks of gestation was quantified using the Sandell-Kolthoff colorimetric method. UIC was corrected for urinary creatinine (measured via Jaffe assay), expressed as I: Cr ratio. Linear and logistic regression were performed to identify non-dietary determinants of iodine status in early pregnancy.

RESULTS

Median (IQR) UIC at 11 and 15 weeks of gestation were 128 (76, 201) and 125 (74, 208) µg/L, respectively, indicating mild-to-moderate iodine deficiency during pregnancy at both timepoints. Iodine-containing supplement use, winter season, BMI, age and education were predictors of I: Cr < 150 µg/g.

CONCLUSION

This first large-scale investigation of maternal iodine status in Ireland highlighted sub-optimal status in pregnancy.

Sleep duration among breastfed, goat milk-based or cow's milk-based infant formula-fed infants: Post hoc analyses from a double-blind RCT

OBJECTIVES

To determine total, night- and daytime sleep duration and waking frequency among infants exclusively fed goat milk-based infant formula (GMF) or cow's milk-based infant formula (CMF) enroled in a randomised controlled trial and compare these to a human milk (HM) fed reference group.

METHODS

Post hoc analysis from a double-blind randomised controlled trial in 304 healthy term infants was performed. Formula-fed infants were randomly assigned to receive exclusively GMF or CMF for a period of 112 days and compared to a reference group fed HM. Sleep was assessed using a 3-day 24-h diary before the five visits throughout the trial. The association between feeding type and sleep was studied longitudinally and cross-sectionally at the five visits. All models were adjusted for infant sex and study site of enrolment. For associations between formula-fed infants and the non-randomised HM group, additional adjustments were made.

RESULTS

Total sleep duration slowly and similarly decreased over the course of study duration for all groups, with a decrease of about an hour between the first and last measurement. Longitudinally, daytime sleep duration was significantly longer for GMF (mean 8.6 h, standard error [SE] 0.17) and HM (8.8, 0.18) fed infants as compared to CMF (8.1, 0.17; p < 0.05). Cross-sectional analyses show that infants fed GMF or HM had higher total sleep duration than infants fed CMF at all visits, with significant differences between the groups at Visits 3 and 4.

CONCLUSIONS

In infants fed GMF a significantly longer daytime sleep duration and a non-significant trend towards a longer total sleep duration were found when compared to infants fed CMF. These findings suggest that nutrition plays a role in sleep duration.

Early life microbial succession in the gut follows common patterns in humans across the globe

Characterizing the dynamics of microbial community succession in the infant gut microbiome is crucial for understanding child health and development, but no normative model currently exists. Here, we estimate child age using gut microbial taxonomic relative abundances from metagenomes, with high temporal resolution (±3 months) for the first 1.5 years of life. Using 3154 samples from 1827 infants across 12 countries, we trained a random forest model, achieving a root mean square error of 2.56 months. We identified key taxonomic predictors of age, including declines in Bifidobacterium spp. and increases in Faecalibacterium prausnitzii and Lachnospiraceae. Microbial succession patterns are conserved across infants from diverse human populations, suggesting universal developmental trajectories. Functional analysis confirmed trends in key microbial genes involved in feeding transitions and dietary exposures. This model provides a normative benchmark of "microbiome age" for assessing early gut maturation that may be used alongside other measures of child development.

What makes a city breastfeeding friendly? A qualitative analysis of interviews with breastfeeding women from Europe and Asia

BACKGROUND

The warm chain of support is the continuous enabling environment from the mother's first contact with healthcare professionals during early pregnancy, birth and immediate post-partum period, her transition from healthcare facility to home, through to work and the community at large. A breastfeeding-friendly city should be able to support a breastfeeding journey across the warm chain.

OBJECTIVE

To determine breastfeeding women's perspective of an ideal breastfeeding-friendly city.

METHODS

Between September 2021 and January 2022, twenty-two women who were breastfeeding or had ever breastfed in the last 5 years from Ireland and Malaysia were interviewed. A set of selection criteria was applied to ensure representation of a range of the characteristics known to be associated with breastfeeding success: diverse age groups, birth and breastfeeding experiences, culture and socioeconomical background. One-on-one semi-structured online interviews were conducted by the first author. Data were analysed using Braun and Clarke's Thematic Analysis framework.

RESULTS

One overarching theme of breastfeeding at the front and centre of the city, and three major themes were developed: 1. mothers feel supported when breastfeeding is prioritised; 2. when breastfeeding is visible in the environment, it becomes normalized; 3. there is a need to have seamless breastfeeding support across the continuum of the warm chain, and at all levels of society.

CONCLUSIONS

The findings demonstrated the importance of prioritized, and continuous support throughout the breastfeeding journey. The hopes and aspirations of a breastfeeding-friendly city expressed here would be useful for cities to consider when developing or implementing breastfeeding support programmes as well as guide development of indicators of a breastfeeding-friendly city.

Why do mothers mix milk feed their infants? Results from a systematic review

CONTEXT

Combining or supplementing breastfeeding with formula feeding, also called mixed milk feeding (MMF), is a common infant feeding practice. However, there is no well-established MMF evidence-base for informing and guiding parents. A better understanding of the reasons why mothers practice MMF may facilitate identification of efficient strategies for supporting exclusive breastfeeding, and/or opportunities to prolong breastfeeding, at least partially.

OBJECTIVE

An updated systematic literature review was undertaken with the primary aim of gaining a deeper understanding of the reasons why mothers choose MMF.

DATA SOURCES

Six databases were searched for relevant articles published in English from January 2012 to January 2022.

DATA EXTRACTION

Two reviewers independently performed the screenings and data extraction, and any differences were resolved by a third reviewer. Data from 138 articles were included, 90 of which contained data on MMF reasons/drivers, and 60 contained data on infant age and/or maternal demographic factors associated with MMF.

DATA ANALYSIS

A total of 13 different unique MMF drivers/reasons were identified and categorized according to whether the drivers/reasons related to perceived choice, necessity, or pressure. Risk of bias was evaluated using the Quality Assessment Tool of Diverse Studies and the JBI Systematic Reviews tool. Several different terms were used to describe and classify MMF across the studies. The most commonly reported reasons for MMF were related to a perception of necessity (39% of drivers, eg, concerns about infant's hunger/perceived breast milk insufficiency or breastfeeding difficulties), followed by drivers associated with perceived choice (34%; eg, having more flexibility) and perceived pressure (25%; eg, returning to work or healthcare professionals' advice). This was particularly true for infants aged 3 months or younger.

CONCLUSION

The key global drivers for MMF and their distribution across infant age and regions were identified and described, providing opportunities for the provision of optimal breastfeeding support. A unified definition of MMF is needed in order to enable more comparable and standardized research.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO registration no. CRD42022304253.

Monitoring of the Main Reasons for Early Abandonment of Breastfeeding during the First Six Months of Life: A Secondary Analysis

The rate of six-month-old infants exclusively breastfed in Spain remains below the recommended rate. This study aimed to explore in detail the evolution of feeding during the first six months of life of a group of newborns, as well as to identify the reasons reported by the mothers for feeding change. A secondary analysis of two prospective longitudinal observational studies was conducted. In both studies, women participants, during the clinical puerperium, opted for exclusive breastfeeding for their newborns. The participants were followed up during the infants' first six months. A sample size of 314 participants was obtained, of which 77.1% (n = 232) were of Spanish origin, and 51% (n = 160) were primiparous. The prevalence of exclusive breastfeeding at six months was 55.4% (n = 174). During the first four months of life, the main reason for early abandonment of breastfeeding was the perception of insufficient milk production. After the fourth month, the predominant reason was starting work. Statistically significant differences were observed between the reasons for giving up and the total weeks of exclusive breastfeeding (p < 0.001) and total weeks of breastfeeding (p = 0.002). Early weaning from breastfeeding is a multifactorial phenomenon. However, depending on the moment cessation occurs, some reasons predominate over others and, in many cases, can be prevented. These results indicate the need to continue investing efforts to promote and protect breastfeeding in Spain.

Effect of care intervention with a health education form for breastfeeding on breast distension, pain, and lactation in postpartum mothers

BACKGROUND

Breastfeeding not only meets the nutritional needs of newborn growth and development but also promotes uterine contraction and discharge of lochia, which helps in maternal recovery. However, some mothers experience abnormal lactation and breast swelling due to a lack of breastfeeding knowledge, painful cesarean incisions, anesthesia, negative emotions, and other factors, resulting in a reduced breastfeeding rate, which adversely affects neonatal and maternal health.

AIM

To explore the effects of care intervention with a health education form for breastfeeding on breastfeeding-related conditions.

METHODS

In this study, 207 mothers with postpartum breast pain and difficulty lactating were selected and divided into intervention and control groups using a random number table. Both groups of mothers were provided with basic nursing and related treatment measures after delivery. The intervention group additionally received care intervention with a health education form for breastfeeding. The scores of lactation volume, breast distension and pain, breastfeeding rate, breastfeeding self-efficacy, treatment effect, and complication rate of the two groups were compared.

RESULTS

After treatment, the breast pain score of the intervention group was significantly lower than that of the control group, while the lactation score, score of Breastfeeding Self-Efficacy Scale Short Form scale, parent-child communication score, maternal-infant interaction score, total score of maternal-infant communication, and breastfeeding rate of the intervention group were significantly higher than those of the control group. After intervention, the overall therapeutic effect of the intervention group was better than that of the control group, and the complication rate of the intervention group was lower than that of the control group.

CONCLUSION

Breastfeeding health education and nursing intervention combined with basic clinical treatment have good clinical effects in managing postpartum breast distension and pain and increasing lactation yield.

Breastfeeding in primiparous women with congenital heart disease - a register study

BACKGROUND

The number of pregnant women with congenital heart disease (CHD) is rising, and the disease poses increased risks of cardiovascular and obstetric complications during pregnancy, potentially impacting breastfeeding success. This study aimed to investigate breastfeeding in primiparous women with CHD compared to primiparous women without CHD, and to examine potential hindering factors for breastfeeding in women with CHD.

METHODS

The data were gathered between 2014 and 2019 and obtained by merging the Swedish Congenital Heart Disease Register (SWEDCON) with the Swedish Pregnancy Register. Primiparous women ≥ 18 years of age with CHD (n = 578) were matched by age and municipality to 3049 women without CHD, giving birth after 22 gestational weeks. Multivariable logistic regression analysis was used to identify factors associated with non-breastfeeding in women with CHD.

RESULTS

Fewer women with CHD breastfed than women without CHD two days (94% vs. 97%, p = 0.001) and four weeks after birth (84% vs. 89%, p = 0.006). When all women were analysed, having CHD was associated with non-breastfeeding at both two days and four weeks after birth. For women with CHD, body mass index (BMI) ≥ 30 (OR 3.1; 95% CI 1.4, 7.3), preterm birth (OR 6.4; 95% CI 2.1, 19.0), self-reported history of psychiatric illness (OR 2.4; 95% CI 1.2, 5.1), small for gestational age (OR 4.2; 95% CI 1.4, 12.2), and New York Heart Association Stages of Heart Failure class II - III (OR 6.0; 95% CI 1.4, 26.7) were associated with non-breastfeeding two days after birth. Four weeks after birth, factors associated with non-breastfeeding were BMI ≥ 30 (OR 4.3; 95% CI 2.1, 9.0), self-reported history of psychiatric illness (OR 2.2; 95% CI 1.2, 4.2), and preterm birth (OR 8.9; 95% CI 2.8, 27.9).

CONCLUSIONS

The study shows that most women with CHD breastfeed, however, at a slightly lower proportion compared to women without CHD. In addition, factors related to the heart disease were not associated with non-breastfeeding four weeks after birth. Since preterm birth, BMI ≥ 30, and psychiatric illness are associated with non-breastfeeding, healthcare professionals should provide greater support to women with CHD having these conditions.

Validation of a touchscreen assessment tool to screen for cognitive delay at 24 months

AIM

To validate a touchscreen assessment as a screening tool for mild cognitive delay in typically developing children aged 24 months.

METHOD

Secondary analysis of data was completed from an observational birth cohort study (The Cork Nutrition & Microbiome Maternal-Infant Cohort Study [COMBINE]), with children born between 2015 and 2017. Outcome data were collected at 24 months of age, at the INFANT Research Centre, Ireland. Outcomes were the Bayley Scales of Infant and Toddler Development, Third Edition cognitive composite score and a language-free, touchscreen-based cognitive measure (Babyscreen).

RESULTS

A total of 101 children (47 females, 54 males) aged 24 months (mean = 24.25, SD = 0.22) were included. Cognitive composite scores correlated with the total number of Babyscreen tasks completed, with moderate concurrent validity (r = 0.358, p < 0.001). Children with cognitive composite scores lower than 90 (1 SD below the mean, defined as mild cognitive delay) had lower mean Babyscreen scores than those with cognitive scores equal to or greater than 90 (8.50 [SD = 4.89] vs 12.61 [SD = 3.68], p = 0.001). The area under the receiver operating characteristic curve for the prediction of a cognitive composite score less than 90 was 0.75 (95% confidence interval = 0.59-0.91; p = 0.006). Babyscreen scores less than 7 were equivalent to less than the 10th centile and identified children with mild cognitive delay with 50% sensitivity and 93% specificity.

INTERPRETATION

Our 15-minute, language-free touchscreen tool could reasonably identify mild cognitive delay among typically developing children.

The Influence of the Baby-Friendly Hospital Initiative and Maternity Care Practices on Breastfeeding Outcomes

BACKGROUND

The Baby-Friendly Hospital Initiative (BFHI) was launched in 1991 to promote breastfeeding through hospital policy. Researchers have reported breastfeeding improvements after hospitals became "Baby-Friendly." In Hong Kong, the first public hospital was designated as a Baby-Friendly Hospital in 2016.

RESEARCH AIM

To examine the influence of the BFHI on breastfeeding by comparing breastfeeding outcomes in a study cohort recruited before the implementation of the BFHI and a cohort recruited after its implementation.

METHODS

This was a quasi-experimental interrupted time-series design. Two cohorts of mother-infant pairs (N = 2369) were recruited immediately postpartum from four public hospitals in Hong Kong and followed up prospectively. Comparisons were made in five of the BFHI steps experienced in both cohorts and the duration of any and exclusive breastfeeding.

RESULTS

A higher proportion of participants from the post-implementation cohort breastfed and breastfed exclusively at all follow-up periods. Participants in the pre-BFHI cohort, on average experienced 3.10 (SD = 1.42) of the BFHI steps, whereas the participants in the post-BFHI cohort experienced 3.59 (1.09) of the BFHI steps. Half of the participants discontinued any breastfeeding by 13 weeks in the pre-BFHI cohort; more than half in the post-BFHI cohort were still breastfeeding at 6 months postpartum (p < .001). Giving only human milk in the first 48 hr of delivery and not providing pacifiers or bottles were associated with lower risk of not exclusive breastfeeding in both cohorts.

CONCLUSION

Implementation of the BFHI was associated with improvements in breastfeeding practices and outcomes.

A repeated cross-sectional analysis of breastfeeding initiation rates in Ireland for two decades and 10 recommended priorities for improvement

Despite a number of public health and policy-based initiatives, Ireland's national breastfeeding rates are among the lowest globally. Regionally, the Mid-West of Ireland has historically had low breastfeeding initiation rates, and parts of its major urban area such as Limerick City suffer the highest levels of economic deprivation in the country. In that context, this repeated cross-sectional study analysed breastfeeding initiation trends in the Mid-West of Ireland for two decades, from 2001 to 2020 inclusively. Statistical analysis revealed persistently low percentages of women initiating breastfeeding in the region. Time series analyses of the data demonstrated that overall breastfeeding rates are increasing, but continue to be lower than Irish national averages. From these findings and a narrative review of published research, we determined 10 plausible reasons for these consistently low breastfeeding rates. Arising from these, we propose '10 Priorities' to increase the breastfeeding initiation rates in Ireland.

Breastfeeding Prevalence in Austria according to the WHO IYCF Indicators-The SUKIE-Study

Breastfeeding and infant nutrition have an important impact on child health. The last representative data on breastfeeding in Austria was collected in 2006. The SUKIE-Study (Säuglings- und Kinderernährung) is a representative, longitudinal survey (online questionnaire) for participating mothers at four time points (14 days, four, six and 12 months post-partum). Questions on when other foods were first introduced were asked retrospectively. To ensure international comparisons, the World Health Organization’s definitions for breastfeeding, including “Infant and Young Child Feeding” indicators, were used. After eligibility screening, 1214 of 1666 invited mothers were included in the analysis. The initial breastfeeding rate was 97.5% and was reduced to 40.8% after 12 months. The rate of exclusive breastfeeding at one week of age was 55.5% and decreased to 1.9% after six months. Half of the infants received infant formula for the first time within the first three days of life (median). Out of the mothers that did wean breastfeeding in the first 12 months, the median duration was 27 weeks (right-censored data). Compared with 2006, an increase (93.2% to 97.5%) in the initial breastfeeding rate was found. However, other findings show that breastfeeding duration, including exclusive breastfeeding rates, need further improvement.

Potential Loss among Infant Feeding Options

Introduction: The conceptual relationship between economics and breastfeeding is still mathematically invaluable, while the family's economic burden increases along with babies born. Indicating potential loss when a family chooses other than breastmilk is a progressive way to manage campaign messages about exclusive breastmilk and prolonged breastfeeding. Descriptive studies are needed to magnify all of these indicators and transform them into measuring instruments generalized to assess family expenditures related to infant feeding.Methods: This study uses a quantitative descriptive design, questionnaire draft upon qualitative open questions containing all micro indicators impacted financially during the baby’s first year. Data collection was carried out in Makassar based on telephone surveys with 330 preliminary samples. After structural analysis and data reduction, the expenditure indicators were divided into medical and non-medical expenses.Results: The study show there is a difference in the average amount of family expenses of those who provide formula milk compared to breastmilk. This outcome is 21.1 times higher in non-medical components and 2.5 times higher in the medical component. One of the highest contributions in medical expenses is the cost of a recurrent visit to a pediatrician due to a history of illness such as allergies, respiratory infections, and diarrhea.Conclusion: This empirical fact stated the strong affirmation of how families should consider wisely to choose the best feeding pattern for babies aged 0-12 months.

Are Maternal Feeding Practices and Mealtime Emotions Associated with Toddlers' Food Neophobia? A Follow-Up to the DIT-Coombe Hospital Birth Cohort in Ireland

This study was conducted to explore the associations between maternal feeding practices, mealtime emotions, as well as maternal food neophobia and toddlers’ food neophobia in Ireland. A follow-up to the Technological University Dublin (DIT)-Coombe Hospital birth cohort was conducted. Mothers in the original cohort were invited to the present study by telephone calls. Postal questionnaires with stamped addressed envelopes were distributed to those who agreed to participate in the study. Toddler food neophobia was assessed by the modified version of the Child Food Neophobia Scale (CFNS). There were 205 participants included in this study, with a median score of child food neophobia of 12. A higher degree of child food neophobia (score > 12) was positively associated with the maternal practice of coaxing the children to eat at refusal (OR (Odds Ratio) = 2.279, 95% CI: 1.048–4.955), unpleasant emotions at mealtime (e.g., stressful or hectic for mothers, or tearful for children) (OR ranged between 1.618 and 1.952), and mothers’ own degree of food neophobia (OR = 1.036, 95% CI: 1.001–1.072). Mothers who were not worried when confronted with child’s food refusal was negatively associated with toddlers’ food neophobia (OR = 0.251, 95% CI: 0.114–0.556). This study suggests the maternal practices of responsive feeding, being calm and patient with the toddlers, and creating a positive atmosphere at mealtime.

Adherence to the infant vitamin D supplementation policy in Ireland

PURPOSE

From September 2010 until November 2019, Ireland's infant vitamin D supplementation policy recommended administration of 5 μg/day of vitamin D₃ from birth to 12 months to all infants, regardless of feeding method. This study aims to examine policy adherence.

METHODS

In the prospective COMBINE birth cohort study (recruited 2015-2017), detailed longitudinal supplement data were examined in 364 infants across the first year of life, according to product type, dose, frequency, and duration. Vitamin D supplement use at 2, 6, and 12 months in COMBINE was compared with the BASELINE cohort (recruited 2008-2011, n = 1949).

RESULTS

In COMBINE, 92% of infants initiated supplementation at birth. The median supplementation duration was 51 (40, 52) weeks, with a range of 3-52 weeks. While supplementing, most parents (92%) used an exclusive vitamin D supplement as recommended and 88% gave 5 µg/day. Half (51%) gave vitamin D daily and a further 33% supplemented at least 3-6 times/week. Overall, 30% adhered fully to the policy, providing 5 µg vitamin D₃ daily from birth to 12 months. A further 16% were broadly compliant, giving 5 µg frequently for the full 12 months. Vitamin D supplement use at 2, 6, and 12 months in COMBINE was 93%, 89%, and 72%, considerably higher than our earlier BASELINE cohort at 49%, 64%, and 44% at the same time points (all P < 0.001).

CONCLUSIONS

We report a high level of vitamin D supplementation initiation at birth, with full to broad policy adherence among more than half of infants. There is scope to improve overall compliance by focusing on supplementation frequency.