Infant temperament, maternal feeding behaviours and the timing of solid food introduction

Examining links between child temperament and feeding, eating, and weight outcomes: An updated systematic review of the literature

BACKGROUND

Weight outcomes have been associated with child temperament, defined as individual differences in reactivity and self-regulation. The current systematic review aims to provide an updated summary of the evidence linking temperamental negative reactivity, surgency, and regulation superfactors to early childhood feeding, eating, and weight outcomes.

METHODS

PubMed, PsycINFO and Embase databases, as well as scientific meeting programs, were searched using keywords and subject headings. Publication dates were limited to 2012-2019 as prior reviews were published in 2012 and 2014. Identified studies were eligible if they included children ages 0-5 years, a measure of child temperament, and a measure of parent/caregiver feeding, child eating, or child weight. 7113 studies were identified and 121 met inclusion criteria.

RESULTS

Feeding, eating, and weight outcomes were largely unrelated to overarching negative reactivity, surgency, and effortful control superfactors. Examination of individual temperament dimensions suggested difficult temperament was frequently linked to non-responsive feeding practices, whereas elevated emotionality and decreased self-regulation were linked to maladaptive eating behaviors, and lower inhibitory control to adiposity. Analyses with infants reported greater percentages of significant associations compared to children, and cross-sectional studies generally reported fewer significant associations than other study designs.

CONCLUSIONS

Difficult temperament, greater emotionality and lower self-regulation and inhibitory control were the aspects of temperament most consistently related to poorer early childhood feeding, eating, and weight outcomes. Associations tended to be stronger in infancy, and when examined within a non-cross-sectional study design. Findings can inform the development of tailored efforts to promote healthy eating and growth throughout childhood.

Are Complementary Feeding Practices Aligned with Current Recommendations? A Narrative Review

The complementary feeding introduction period (introduction of solid foods alongside breastmilk or formula) is defining in children's health; however, it appears that many parents do not follow complementary feeding guidelines. Our aim was to describe current parental feeding practices during complementary feeding in relation to current recommendations and explore determinants of adherence to guidelines. We included any relevant studies published within the last decade in French or English and summarized findings by recommendation category. The timing of complementary food introduction varied widely across and within continents (earlier in North America and often delayed in Asia). The introduction of allergenic foods tended to be delayed globally. Although some parents now begin complementary feeding with solid foods (i.e., baby-led weaning), delayed introduction of lumpy textures was still prevalent in the United States and in Europe. The consumption of iron-rich foods was predominantly low in Africa. Added sugars were globally introduced early, especially in America. Evidence for the prevalence of responsive feeding practices among parents is unclear due to the small number of studies. Determinants of complementary feeding practices included parental characteristics, such as age, education, socio-economic status, and race/ethnicity. Interventions aiming to increase adherence to complementary feeding guidelines must account for parental characteristics.

Exploratory analysis of factors that influence maternal deviation from prenatal infant feeding plans: A research brief

AIM

The purpose of this study was to examine factors associated with maternal deviation from prenatal infant feeding plans.

BACKGROUND

Infant feeding practices influence infant growth and development, thus, having long term implications for child health. Literature suggests that, prenatally, mothers plan to breastfeed, however, breastfeeding rates remain low, additionally, early introduction of complementary foods (CF) is common. Understanding the discrepancy between high maternal intentions for breastfeeding yet low breastfeeding practices and early CF introduction is needed.

METHODS

This descriptive study recruited first-time mothers and their infants (N = 33) from the community; pre-pregnancy height and weight, demographics, and infant feeding plans (breast/formula feeding; CF introduction age) were collected in the third trimester. Four months after birth, infant feeding practices were collected. Prenatal plans and practices at 4 months were compared and dichotomized into a yes/no variable. Bivariate analyses were conducted.

RESULTS

Almost half (46 %) of mothers deviated from their prenatal infant feeding plans. Analyses reveal that mothers with a higher BMI were more likely to deviate from their prenatal feeding intentions when compared to mothers with a lower BMI (Mdn = 29.82 vs Mdn = 24.2, p = 0.05, r = 0.34). Though not significant, maternal race/ethnicity, marital status, and employment status are important variables to consider in future work.

CONCLUSION

The finding that women with a higher BMI are more likely to deviate from their prenatal infant feeding intentions is consistent with prior research. Future research should focus on the reason this difference exists. Additionally, reasons for deviation should be explored in a larger, more diverse sample.

Food as a key disgust elicitor in infancy and childhood: Previous research and opportunities for future study

Disliked foods may have important value in the study of the development of disgust. The current review draws from literature across disciplines, including theories of disgust and studies of the development of eating behavior and food preferences, to highlight food as an important category of disgust responses across a wide age range, including children as young as 3 years old and adults. Children's disgust responses to certain types of food are considered to be both innate and culturally constrained behaviors, and their perceptions of other people's food choices indicate potential links between foods and cultural groups. We end by discussing several ongoing and future research areas, including connections between disgust responses and food rejection in infancy and children's food rejection behaviors across cultures.

Bidirectional associations between maternal controlling feeding and food responsiveness during infancy

Parental controlling feeding styles and practices have been associated with greater food-approaching appetitive behaviors (i.e., food responsiveness) linked to childhood obesity. Recent longitudinal research suggests that this relationship may be reciprocal such that controlling feeding predicts child appetite and vice versa. However, to date no studies have considered these associations during infancy. The current study investigates prospective bidirectional associations between controlling feeding (restriction, pressure, and food to soothe) and infant food responsiveness. Mothers (N = 176) reported their controlling feeding and their infant's food responsiveness at infant age 2, 6, and 14 months. A 3-wave cross-lagged panel model was used to test the effect of controlling feeding at an earlier time point on infant food responsiveness at a later time point, and vice versa. Maternal controlling feeding and infant food responsiveness showed moderate stability across infancy. Net of covariates, we observed parent-driven prospective relations between pressuring feeding styles and food to soothe with infant food responsiveness. Pressuring to finish was a significant predictor of increases in food responsiveness from 2 to 6 months (p = 0.004) and pressuring with cereal was a significant predictor of increases in food responsiveness from 6 to 14 months (p = 0.02). Greater use of situational food to soothe was marginally associated with higher food responsiveness from 2 to 6 months (p = 0.07) and 6 to 14 months (p = 0.06). Prospective associations between restrictive feeding styles and infant food responsiveness were not observed. Findings point to pressuring feeding styles and food to soothe as potential early life intervention targets to prevent increases in food responsiveness in infancy. Longitudinal research with follow-up in the toddler and preschool years are needed to understand how these associations unfold over time and whether child-driven effects of food responsiveness become apparent as children get older.

An online survey of dietary quality during complementary feeding; associations with maternal feeding self-efficacy and adherence to dietary recommendations

Background

Parents are the gatekeepers of nutrition in early life and their feeding practices form children’s dietary behaviours. Although maternal characteristics have been associated with certain feeding practices, their relationship with overall quality of complementary feeding diets has not been explored. This study aimed to: assess dietary quality in complementary feeding age; explore its association with maternal and child characteristics; and evaluate the association between complementary feeding practices and child weight.

Methods

An online cross-sectional survey captured data from a self-selected sample of mothers living in the UK with a healthy full-term child in complementary feeding age. A total of 466 mothers completed a questionnaire on their complementary feeding practices, demographics, anthropometrics, rates of maternal food neophobia, feeding self-efficacy, social support, postnatal depression and infant temperament. Dietary quality was assessed using the Complementary Feeding Utility Index (CFUI). Children were classified into underweight, normal weight, overweight and obese.

Results

Majority of participants reported high levels of dietary quality as determined by a mean CFUI score of 80%. High dietary quality was associated with reliance on the NHS recommendation on timing of complementary feeding and maternal self-efficacy in promoting a healthy diet and limiting non-recommended foods. Responsive feeding, longer breastfeeding duration, frequent exposure to fruits and to a high variety of protein-rich animal foods were significantly associated with lighter child weight status. Consumption of sweetened drinks and delayed introduction of lumpy foods were associated with heavier child weight status.

Conclusions

This study provided an evaluation of dietary quality in complementary feeding in a UK sample of children and explored its relationship with maternal and child attributes. Increasing understanding of the current complementary feeding recommendations and strengthening maternal feeding self-efficacy may be key for healthcare professionals and researchers to improving complementary feeding practices.

Supplementary Information

The online version contains supplementary material available at 10.1186/s40795-022-00595-8.

Cross-cultural adaptation and validation of the Infant Feeding Style Questionnaire in Brazil

We cross-culturally adapted and validated the Infant Feeding Style Questionnaire (IFSQ) in Brazil. The cross-cultural adaptation and content validity assessment was conducted in five steps: translation, synthesis of translations, back-translation, evaluation by experts, and pre-test. To evaluate reliability, construct validity, and floor and ceiling effects, interviews were conducted with 465 mother-infant pairs at Primary Health Centers in the Federal District, Brazil. The mothers answered the Brazilian Portuguese version of the IFSQ (IFSQ-Br), which evaluated four feeding styles (laissez-faire, pressuring, restrictive, and responsive) from 9 sub-constructs. The indulgent style was not evaluated due to time limitation. We performed reliability analysis using Cronbach’s alpha coefficient and construct validity was evaluated through Confirmatory Factor Analysis. Higher means were found in the sub-constructs of the responsive and restrictive styles. The IFSQ-Br presented adequate reliability (α = 0.73) with values for the Cronbach’s alpha coefficient of the sub-constructs ranging from 0.42 to 0.75. In the Confirmatory Factor Analysis, the final models presented good fit, with the Comparative Fit Indices (CFI) ranging from 0.86 to 1.0 and the Root-Mean Squared Error of Approximation (RMSEA) between 0.0 and 0.09. The IFSQ-Br was shown to be a valid and reliable questionnaire to evaluate maternal feeding beliefs and behaviors in Brazil. Future studies should evaluate the psychometric properties of the indulgent style and include mother-infant pairs from different cultural contexts in Brazil.

Eating Behaviors of Children with Autism-Pilot Study

Autism Spectrum Disorder (ASD) is the most recognized neuropsychiatric disorder of childhood. Comorbid conditions (such as feeding disorders) are more common among people with autism than among the general population. The most frequent somatic disorders in autistic children include the gastrointestinal disorders observed in 46–91% of patients. The purpose of this study was the evaluation of the nutrition of children with autism, with particular emphasis placed on feeding in the first year of life, in comparison to the group of healthy peers. Participants included 75 Caucasian children (41 children diagnosed with pure autism, and the control group consisting of 34 children without autistic traits). The analysis was performed based on a questionnaire of own design with the first part devoted to the eating practices of the early infancy. Results: Autistic children, as compared to the healthy peers, presented a shortened time of breastfeeding (the children fell asleep at the breast) (p = 0.04), a delayed introduction of dairy products (p = 0.001), the need of more trials to introduce new foods (p = 0.006), a delayed introduction of foods with solid and lumpy structure (p = 0.004), a longer duration of bottle feeding (p = 0.005), delayed attempts to eating using own hands (p = 0.006) and needed a greater support of parents to divert their attention from food during eating (p = 0.05). Conclusions: 1. The dietary problems are more common among children with the autism spectrum disorder than among the population of healthy children, during the first year of life from the time of introducing the complementary foods. 2. The autistic children experience difficulties with eating and require their parents’ additional involvement significantly more often than their healthy peers.

Parental considerations during complementary feeding in higher income countries: a systematic review of qualitative evidence

OBJECTIVE

Worldwide data suggest a clash between parental complementary feeding practices and recommendations. Understanding the circumstances under which parents form their feeding practices is a crucial step to improve such practices. This paper aimed to systematically review the existing qualitative literature and synthesise the factors that parents take into consideration in relation to complementary feeding.

DESIGN

A systematic review was undertaken. Four electronic databases were searched for qualitative studies published after 2001 exploring parental experiences during complementary feeding. A framework that included authors' outcomes of interest was used to extract and synthesise study findings. The Standards for Reporting Qualitative Research were used to critically assess the included studies.

SETTING

Upper-middle- and high-income countries.

PARTICIPANTS

Parents with a child below the age of 3 years.

RESULTS

A total of forty-seven studies met the eligibility criteria and were included in this systematic review. The themes were organised into three main categories: (1) factors related to introduction of complementary foods; (2) factors related to the type of complementary foods and (3) factors related to both timing and type. The selected literature highlights: prevalent baby cues that prompt parents to introduce solid foods; parents' views on the recommended timing of complementary feeding; factors that drive the choice of complementary foods and perceived value in advice received from health professionals and grandmothers.

CONCLUSIONS

This systematic review indicates factors that can be barriers to complying with the complementary feeding guidelines, and therefore, its findings are pertinent to improving parental feeding practices through intervention studies and through infant feeding education in a primary care setting.

Development of the infant gut microbiome predicts temperament across the first year of life

Perturbations to the gut microbiome are implicated in altered neurodevelopmental trajectories that may shape life span risk for emotion dysregulation and affective disorders. However, the sensitive periods during which the microbiome may influence neurodevelopment remain understudied. We investigated relationships between gut microbiome composition across infancy and temperament at 12 months of age. In 67 infants, we examined if gut microbiome composition assessed at 1-3 weeks, 2, 6, and 12 months of age was associated with temperament at age 12 months. Stool samples were sequenced using the 16S Illumina MiSeq platform. Temperament was assessed using the Infant Behavior Questionnaire-Revised (IBQ-R). Beta diversity at age 1-3 weeks was associated with surgency/extraversion at age 12 months. Bifidobacterium and Lachnospiraceae abundance at 1-3 weeks of age was positively associated with surgency/extraversion at age 12 months. Klebsiella abundance at 1-3 weeks was negatively associated with surgency/extraversion at 12 months. Concurrent composition was associated with negative affectivity at 12 months, including a positive association with Ruminococcus-1 and a negative association with Lactobacillus. Our findings support a relationship between gut microbiome composition and infant temperament. While exploratory due to the small sample size, these results point to early and late infancy as sensitive periods during which the gut microbiome may exert effects on neurodevelopment.

Associations between maternal and paternal feeding styles of infants in a racially diverse US birth cohort

BACKGROUND

Maternal feeding style has been associated with childhood obesity and has been the target of numerous interventions, but few studies included fathers.

OBJECTIVES

We assessed correlations and associations between maternal and paternal feeding style.

METHODS

We examined 202 mothers, fathers, and infants in Nurture, a racially diverse US cohort (2013-2017). Mothers and fathers completed the Infant Feeding Style Questionnaire when infants were 6 and 12 months. We examined unadjusted correlations using Spearman's Rho and adjusted associations using linear regressions.

RESULTS

All feeding styles were significantly correlated. After adjustment, maternal feeding style was associated with paternal feeding style at 6 and 12 months for responsive (ß 0.31; CI 0.18, 0.45; P ≤ 0.0001 and ß 0.67; CI 0.50, 0.84; P ≤ 0.0001), restrictive (ß 0.24; CI 0.09, 0.38; P = 0.001 and ß 0.44; CI 0.29, 0.59; P ≤ 0.0001), pressuring (ß 0.46; CI 0.34, 0.58; P ≤ 0.0001 and ß 0.51; CI 0.38, 065; P ≤ 0.0001), indulgent (ß 0.36; CI 0.20, 0.52; P ≤ 0.0001 and ß 0.57; CI 0.40, 0.73; P ≤ 0.0001), and laissez-faire (ß 0.39; CI 0.24, 0.55; P ≤ 0.0001 and ß 0.55; CI 0.37, 0.72; P ≤ 0.0001).

CONCLUSIONS

Maternal and paternal feeding styles were correlated. Associations held after adjustment, suggesting that mothers and fathers are in relative agreement in their reporting.

Cultural Influences on Complementary Feeding Beliefs amongst New Chinese Immigrant Mothers in England: A Mixed Methods Study

Adequate nutrition during infancy and early childhood is essential for ensuring the growth, health, and development of children so that they can reach their full potential. There is a current void of data on infant and young child feeding practices (IYCF) in ethnic minority communities in the UK; specifically, it is difficult to find accurate Chinese IYCF data in the UK because survey data often includes Chinese in the category of ‘Chinese or other ethnic group’, further contributing to health inequalities. This mixed methods study aimed to explore the cultural influences on IYCF beliefs among new Chinese immigrant mothers. A total of 31 mothers of infants aged 6–23 months were recruited from informal community organizations. All 31 mothers were born in Mainland China, the mean length of their stay after immigrating to the UK was 10 years (range = 1–21 years), and their mean age was 29 ± 3.40 years. When using the Infant Feeding Style Questionnaire (IFSQ) to investigate IYCF beliefs, the highest score was obtained for responsive attention, with a value of 4.28 ± 0.92, indicating that parents were very attentive to child hunger and satiety cues; lower scores were obtained for indulgence soothing (1.82 ± 1.01), indulgence coaxing (2.11 ± 1.18), indulgence pampering (1.90 ± 0.95), and pressuring to soothe (1.92 ± 0.86), indicating lesser maternal indulgence and pressuring/controlling beliefs. A sub-sample (n = 14) participated in semi-structured interviews in order to understand the balancing sources of information and cultural preferences, the influence of traditional Chinese medicine, and language difficulties in accessing health services. The mothers reported barriers of IYCF beliefs and the introduction of solid foods earlier than the NHS guidelines. This study can promote optimal IYCF in Chinese immigrants and show health services the need to reconcile differences between the perceptions of British and Chinese health beliefs.

Infant temperament, maternal feeding behaviours and the timing of solid food introduction

Despite guidance from the World Health Organization and the U.K. Department of Health, many mothers introduce solid food before their infant is 6 months old. The current study aimed to investigate relationships between maternal feeding behaviours (preintroduction and postintroduction to solids), infant temperament, and the timing of introduction to solid food. Eighty‐one women were recruited on low‐risk maternity units and were contacted at 1 week, 3, and 6 months postpartum. Mothers of infants (45 males, 36 females, mean birth weight 3.52 kg [SD 0.39]) completed the behaviours component of the Infant Feeding Style Questionnaire via telephone interview at 3 months. At 6 months, they were observed feeding their infant solid food at home and reported infant temperament using the Infant Behaviour Questionnaire‐Revised (short form). Partial correlations (covariates: birth weight, maternal age, breastfeeding duration, and postnatal depression) revealed negative associations between age of introduction to solid food and temperament (smiling and laughter) and laissez‐faire milk feeding behaviours; and positive associations between age of introduction to solid food and restrictive milk feeding behaviours and verbal involvement during an observed mealtime. Hierarchical multiple regression analysis revealed that an infant's birth weight and the degree to which their mothers perceive them to smile and laugh are key predictors of when they will be introduced to solid food, over and above other variables of interest (e.g., maternal milk feeding behaviours, breastfeeding duration, and postnatal depression).