Breastfeeding and depression: a systematic review of the literature

BACKGROUND

Research has separately indicated associations between pregnancy depression and breastfeeding, breastfeeding and postpartum depression, and pregnancy and postpartum depression. This paper aimed to provide a systematic literature review on breastfeeding and depression, considering both pregnancy and postpartum depression.

METHODS

An electronic search in three databases was performed using the keywords: "breast feeding", "bottle feeding", "depression", "pregnancy", and "postpartum". Two investigators independently evaluated the titles and abstracts in a first stage and the full-text in a second stage review. Papers not addressing the association among breastfeeding and pregnancy or postpartum depression, non-original research and research focused on the effect of anti-depressants were excluded. 48 studies were selected and included. Data were independently extracted.

RESULTS

Pregnancy depression predicts a shorter breastfeeding duration, but not breastfeeding intention or initiation. Breastfeeding duration is associated with postpartum depression in almost all studies. Postpartum depression predicts and is predicted by breastfeeding cessation in several studies. Pregnancy and postpartum depression are associated with shorter breastfeeding duration. Breastfeeding may mediate the association between pregnancy and postpartum depression. Pregnancy depression predicts shorter breastfeeding duration and that may increase depressive symptoms during postpartum.

LIMITATIONS

The selected keywords may have led to the exclusion of relevant references.

CONCLUSIONS

Although strong empirical evidence regarding the associations among breastfeeding and pregnancy or postpartum depression was separately provided, further research, such as prospective studies, is needed to clarify the association among these three variables. Help for depressed pregnant women should be delivered to enhance both breastfeeding and postpartum psychological adjustment.

Major factors influencing breastfeeding rates: Mother's perception of father's attitude and milk supply

OBJECTIVE

To determine factors influencing feeding decisions, breastfeeding and/or bottle initiation rates, as well as breastfeeding duration.

SETTING

A family medicine practice of a 530-bed community-based hospital in northwestern Pennsylvania.

PARTICIPANTS

All mothers whose infants received well-child care from birth to 1 year of age.

OUTCOME MEASURE

A survey of 28 simple questions was developed and mailed to 245 mothers. The survey assessed: 1) demographics, 2) prenatal and postnatal care, 3) sources of breastfeeding information, 4) timing of decision, 5) preference, 6) type of feeding selected, 7) duration of breastfeeding, 8) factors influencing decisions to breastfeed and/or to bottle-feed, and 9) factors that would have encouraged bottle-feeding mothers to breastfeed.

RESULTS

The breastfeeding initiation rate was 44.3%. By the time the infant was 6 months old, only 13% of these were still breastfeeding. The decision to breastfeed or to bottle-feed was most often made before pregnancy or during the first trimester. The most common reasons mothers chose breastfeeding included: 1) benefits the infant's health, 2) naturalness, and 3) emotional bonding with the infant. The most common reasons bottle-feeding was chosen included: 1) mother's perception of father's attitude, 2) uncertainty regarding the quantity of breast milk, and 3) return to work. By self-report, factors that would have encouraged bottle-feeding mothers to breastfeed included: 1) more information in prenatal class; 2) more information from TV, magazines, and books; and 3) family support.

CONCLUSIONS

To overcome obstacles, issues surrounding perceived barriers, such as father's attitude, quantity of milk, and time constraints, need to be discussed with each parent. To achieve the goal of 75% of breastfeeding mothers, extensive education regarding the benefits must be provided for both parents and optimally the grandmother by physicians, nurses, and the media before pregnancy or within the first trimester.

Breastfeeding cessation and symptoms of anxiety and depression: a longitudinal cohort study

BACKGROUND

Neonatal anxiety and depression and breastfeeding cessation are significant public health problems. There is an association between maternal symptoms of anxiety and depression and early breastfeeding cessation. In earlier studies, the causality of this association was interpreted both ways; symptoms of anxiety and depression prepartum significantly impacts breastfeeding, and breastfeeding cessation significantly impacts symptoms of anxiety and depression.First, we aimed to investigate whether breastfeeding cessation is related to an increase in symptoms of anxiety and depression from pregnancy to six months postpartum. Second, we also investigated whether the proposed symptom increase after breastfeeding cessation was disproportionately high for those women already suffering from high levels of anxiety and depression during pregnancy.

METHODS

To answer these objectives, we examined data from 42 225 women in the Norwegian Mother and Child Cohort Study (MoBa). Subjects were recruited in relation to a routine ultra-sound examination, and all pregnant women in Norway were eligible. We used data from the Medical Birth Registry of Norway and questionnaires both pre and post partum. Symptoms of anxiety and depression at six months postpartum were predicted in a linear regression analysis by WHO-categories of breastfeeding, symptoms of anxiety and depression prepartum (standardized score), and interaction terms between breastfeeding categories and prepartum symptoms of anxiety and depression. The results were adjusted for cesarean sections, primiparity, plural births, preterm births, and maternal smoking.

RESULTS

First, prepartum levels of anxiety and depression were related to breastfeeding cessation (β 0.24; 95% CI 0.21-0.28), and breastfeeding cessation was predictive of an increase in postpartum anxiety and depression ( β 0.11; 95%CI 0.09-0.14). Second, prepartum anxiety and depression interacted with the relation between breastfeeding cessation and postpartum anxiety and depression ( β 0.04; 95% CI 0.01-0.06). The associations could not be accounted for by the adjusting variables.

CONCLUSIONS

Breastfeeding cessation is a risk factor for increased anxiety and depression. Women with high levels of anxiety and depression during pregnancy who stop breastfeeding early are at an additional multiplicative risk for postpartum anxiety and depression.

Initiation and continuation of breastfeeding: theory of planned behaviour

AIMS

This paper reports a study investigating new mothers' subjective norms in relation to both breast- and bottle-feeding. The influence of norms on women's infant feeding decisions and the relative influence of social referents at varying degrees of social distance were assessed.

BACKGROUND

Increasing breastfeeding initiation and continuation rates is a key challenge for health educators. The perceived influence of other people's views (subjective norms), including the views of women's partners and health care professionals, is an important predictor of infant feeding behaviour.

METHODS

Semi-structured questionnaires were administered to 203 new mothers in central and northern Scotland and followed-up by postal questionnaire at 6 weeks. Infant feeding intentions, feeding behaviour at birth and follow-up, behavioural beliefs and subjective norms for both breastfeeding and bottle-feeding were assessed. The data were collected in 1998-1999.

RESULTS

Subjective norms were important determinants of initiation and continuation of breastfeeding for breast- and bottlefeeders. Breastfeeders rated close social referents as more in favour of bottle-feeding and more against breastfeeding at follow-up, whereas bottlefeeders' ratings did not change. Partner's and nurses'/midwives' views were an important influence at baseline and follow-up. Breastfeeding 'continuers' perceived their partners as more pro-breastfeeding at 6 weeks. Discontinuers perceived more overall social pressure to bottle-feed. However, sampling limitations may have led to over-representation of the views of breastfeeders at baseline and follow-up.

CONCLUSIONS

Nurses and midwives have a crucial role in communicating positive views on breastfeeding to new mothers at different time points. Future interventions to promote breastfeeding could adopt a broad social approach, encouraging positive norms for existing and potential mothers and fathers, families and people in general.

Does maternal postpartum depressive symptomatology influence infant feeding outcomes?

AIM

To examine the relationship between diverse infant feeding outcomes, e.g. infant feeding method, maternal satisfaction, infant feeding plans, breastfeeding progress and breastfeeding self-efficacy) and postpartum depressive symptomatology using a time-sequenced analysis.

METHODS

As part of a population-based study, 594 participants completed questionnaires at 1, 4 and 8 weeks postpartum.

RESULTS

No relationship was found between diverse infant feeding outcomes at 1-week postpartum and the development of depressive symptomatology at 4 or 8 weeks. Conversely, mothers with an Edinburgh Postnatal Depression Score>12 at 1 week postpartum were significantly more likely at 4 and/or 8 weeks to discontinue breastfeeding, be unsatisfied with their infant feeding method, experience significant breastfeeding problems and report lower levels of breastfeeding self-efficacy.

CONCLUSIONS

The findings from this study suggest that early identification of breastfeeding mothers with depressive symptomatology is needed not only to reduce the morbidity associated with postpartum depression but also in attempt to promote increased rates of breastfeeding duration.

The decision to breastfeed in the United States: does race matter?

OBJECTIVES

To estimate the effects of maternal and birth characteristics on the decision to breastfeed and to relate breastfeeding practices to racial differences in infant mortality.

METHODS

Using a sample of women with young children from the National Survey of Family Growth (NSFG), Cycle V, 1995, the likelihood of breastfeeding was modeled using logistic regression techniques. In addition, single, live births from the NSFG 1988 and 1995 surveys were analyzed to model the effects of race and breastfeeding on infant mortality using Cox regression methods.

RESULTS

After controlling for socioeconomic background and birth characteristics, race remained a strong predictor of breastfeeding. Black women were less likely to breastfeed than nonblack women were, and the primary reason indicated by black women for not breastfeeding was that they "preferred to bottle-feed." Analyses of infant mortality indicated that breastfeeding accounts for the race difference in infant mortality in the United States at least as well as low birth weight does.

CONCLUSIONS

Race is an important predictor of breastfeeding, with most black women reporting that they "preferred bottle-feeding." Efforts to increase breastfeeding of infants in the black community should help narrow the racial gap in infant mortality.

Factors affecting the initiation of breastfeeding: implications for breastfeeding promotion

Breastfeeding rates in the United Kingdom (UK) are one of the lowest in the developed world and certainly the lowest in Europe. There have been numerous studies of breastfeeding in the UK, most of which have adopted a quantitative approach, and they have largely focused on obstetric or socio-demographic factors in the decision to breastfeed. Whilst these studies have an important role to play, this paper draws on a study that adopts a qualitative methodology to explore women's personal experiences and perceptions of breastfeeding. A qualitative study of 19 primagravidae was undertaken and completed in 1998. Participants were recruited to the study via 12 antenatal clinics in the West Midlands, England, UK. Their ages ranged from 16 to 30 years and the majority described themselves as 'white'. The majority of participants were in paid employment in a variety of occupations. The study was prospective in design. Participants were interviewed three times either during pregnancy or after childbirth: the first stage was between 6 and 14 weeks of pregnancy; the second stage was between 34 and 39 weeks; and the third stage was between 6 and 14 weeks after childbirth. The data indicate that there are several factors affecting breastfeeding initiation. First, infant feeding decisions seem to be made prior to, or irrespective of, contact with health professionals. Secondly, the data suggest that health promotion campaigns in the UK have been influential in their ability to educate women about the benefits of breastfeeding. However, this did not dissuade participants from formula feeding once their decision was made. The desire for paternal involvement also seemed to be another influential factor; fathers were either seen as able to alleviate the daily grind of early motherhood, or there was a desire for 'shared parenting'. Finally, some of the formula feeding women expressed a strong desire to re-establish their identities as separate individuals and as 'non-mothers'.

Species-specific differences and similarities in the behavior of hand-raised dog and wolf pups in social situations with humans

In order to reveal early species-specific differences, we observed the behavior of dog puppies (n = 11) and wolf pups (n = 13) hand raised and intensively socialized in an identical way. The pups were studied in two object-preference tests at age 3, 4, and 5 weeks. After a short isolation, we observed the subjects' behavior in the presence of a pair of objects, one was always the subject's human foster parent (caregiver) and the other was varied; nursing bottle (3 weeks), unfamiliar adult dog (3 and 5 weeks), unfamiliar experimenter (4 and 5 weeks), and familiar conspecific age mate (4 weeks). Dogs and wolves did not differ in their general activity level during the tests. Wolf pups showed preference for the proximity of the caregiver in two of the tests; Bottle-Caregiver at the age of 3 weeks and Experimenter-Caregiver at the age of 5 weeks, while dogs showed preference to the caregiver in three tests; conspecific Pup-Caregiver and Experimenter-Caregiver at the age of 4 weeks and dog-caregiver at the age of 5. Compared to wolves, dogs tended to display more communicative signals that could potentially facilitate social interactions, such as distress vocalization, tail wagging, and gazing at the humans' face. In contrast to dog puppies, wolf pups showed aggressive behavior toward a familiar experimenter and also seemed to be more prone to avoidance. Our results demonstrate that already at this early age--despite unprecedented intensity of socialization and the comparable social (human) environment during early development--there are specific behavioral differences between wolves and dogs mostly with regard to their interactions with humans.

Parental attitudes toward breastfeeding: their association with feeding outcome at hospital discharge

BACKGROUND

A woman chooses to breastfeed for many reasons. Recent research, however, suggests that parental attitudes toward breastfeeding are stronger predictors of infant feeding choice than commonly cited sociodemographic factors. The objective of the current study was to compare the infant feeding attitudes of expectant couples, and to determine to what degree their individual attitudes during early pregnancy were predictive of the method of infant feeding at discharge from hospital.

METHODS

A convenience sample of pregnant women (gestational age 8-12 weeks), who were attending maternity clinics in Glasgow, Scotland, in 2000, completed the 17-item Iowa Infant Feeding Attitude Scale (IIFAS), together with their partners.

RESULTS

The IIFAS was completed by 108 expectant couples. At discharge from hospital 49.1 percent of women were exclusively breastfeeding, and 50.9 percent were exclusively formula-feeding. A woman's total infant feeding attitude score was significantly correlated with her partner's score(r = 0.67, p < 0.001). There was no difference in the infant feeding attitudes of formula-feeding couples(p = 0.987), but breastfeeding women tended to be more supportive of breastfeeding than their partners(p = 0.022). Maternal, but not paternal, infant feeding attitude was a significant predictor of the choice of feeding method (OR = 1.16 95% CI = 1.09-1.24).

CONCLUSIONS

Infant feeding attitudes tended to be shared by expectant couples. Maternal infant feeding attitude was a better predictor of feeding choice than were demographic factors. Paternal attitudes were not found to be independently associated with feeding choice. Identification of women with neutral infant feeding attitudes using the IIFAS may be an effective way of targeting interventions at those women who are most likely to be receptive to such programs.

Differences between exclusive breastfeeders, formula-feeders, and controls: a study of stress, mood, and endocrine variables

The purpose of this study was to examine relationships among lactational status, naturalistic stress, mood, and levels of serum cortisol and prolactin and plasma adrenocorticotropic hormone (ACTH). Eighty-four exclusively breastfeeding, 99 exclusively formula-feeding, and 33 nonpostpartum healthy control women were studied. The postpartum mothers were studied cross-sectionally once between 4 and 6 weeks after the birth. Stress was measured using the Perceived Stress Scale, the Tennessee Postpartum Stress Scale, and the Inventory of Small Life Events. Mood was measured using the Profile of Mood States. Serum prolactin, plasma ACTH, and serum cortisol levels were measured by commercial ELISA (enzyme-linked immunosorbent assay) kits. Results indicate that breastfeeding mothers had more positive moods, reported more positive events, and perceived less stress than formula-feeders. Reports of stressful life events were generally equivalent in the two groups. Serum prolactin was inversely related to stress and mood in formula-feeders. When breast and formula-feeders were compared to controls, they had higher serum cortisol, lower stress, and lower anxiety. Breastfeeders had lower perceived stress than controls. Breastfeeders had lower depression and anger and more positive life events reported than formula-feeders. However, there were few correlations among stress, mood, and the hormones in postpartum mothers, and those only in formula-feeders, whereas strong relationships were found between serum ACTH and a number of stress and mood variables in controls. Postpartum mothers reported a range of stress and negative moods at 4 to 6 weeks, and in formula-feeders, serum prolactin was related to some of the stress and mood variables. Breastfeeding appears to be somewhat protective of negative moods and stress.

Women's experiences of breastfeeding in a bottle-feeding culture

Focus group interviews were used to explore the breastfeeding attitudes and experiences of a group of low-income Scottish women who were breastfeeding in an environment where bottle-feeding was the cultural norm. The majority of women interviewed had no prior exposure to breastfeeding and received little or no support or advice for breastfeeding from family or friends. All women were participants in a breastfeeding peer-support project, and for most the peer volunteers represented their only source of support and guidance, outside of that provided by health professionals. Women often went to great lengths to avoid having to breastfeed in public, and the majority preferred to breastfeed away from the public gaze. Despite reported increases in breastfeeding rates, bottle-feeding remains the cultural norm in the more deprived areas of Glasgow. Those women who do breastfeed in these areas demonstrate a high level of commitment to breastfeeding that sets them apart from their social peers.

Mothers' experiences of bottle-feeding: a systematic review of qualitative and quantitative studies

OBJECTIVE

Most babies receive at least some formula milk. Variations in formula-feeding practices can have both short- and long-term health consequences. The literature on parents' experiences of bottle-feeding was systematically reviewed to understand how formula-feeding decisions are made.

METHODS

Relevant English-language papers, identified by searching 12 electronic databases, reference lists and related articles and by contacting first authors of included papers, were systematically searched for and appraised. The included studies were analysed and synthesised using a combination of narrative and thematic approaches. Consensus on the final inclusion, interpretation and synthesis of studies was reached across the research team.

RESULTS

Six qualitative studies and 17 quantitative studies (involving 13 263 participants) were included. Despite wide differences in study design, context, focus and quality, several consistent themes emerged. Mothers who bottle-fed their babies experienced negative emotions such as guilt, anger, worry, uncertainty and a sense of failure. Mothers reported receiving little information on bottle-feeding and did not feel empowered to make decisions. Mistakes in preparation of bottle-feeds were common. No studies examined how mothers made decisions about the frequency or quantity of bottle-feeds.

CONCLUSIONS

Inadequate information and support for mothers who decide to bottle-feed may put the health of their babies at risk. While it is important to promote breastfeeding, it is also necessary to ensure that the needs of bottle-feeding mothers are met.

Why some women do not breast feed: bottle feeding and fathers' role

OBJECTIVE

To explore women's experiences and perceptions of baby feeding and to explore the explanations offered by women who choose to either breast or bottle feed.

DESIGN

A qualitative study, which was prospective in design. Participants were interviewed three times: the first stage was between six and 14 weeks of pregnancy; the second stage was between 34 and 39 weeks; and the third stage was between six and 14 weeks after childbirth.

PARTICIPANTS

19 participants were recruited to the study group via 12 antenatal clinics in Coventry, UK.

FINDINGS AND DISCUSSION

The data indicate that participants make baby-feeding decisions either prior to conception or early in the pregnancy. Findings also indicate that both breast and bottle feeders possessed knowledge of the benefits of breast feeding, but this did not seem to influence decision making. One of the most significant factors influencing the decision to bottle feed appears to be a desire for paternal involvement.

CONCLUSIONS AND IMPLICATIONS FOR PRACTICE

To increase the incidence of breast feeding, health-care professionals should consider the need for preconceptual health promotion. The role of paternal involvement in baby-feeding decisions also needs to be acknowledged and men need to be included in breast-feeding promotion campaigns.

Infant feeding attitudes of expectant parents: breastfeeding and formula feeding

BACKGROUND

Research has indicated that parental attitudes are strong predictors of choice of infant feeding. Identification and understanding of the infant feeding attitudes of mothers and their social networks should be an early step in the design and implementation of breastfeeding interventions.

AIM

To compare the infant feeding attitudes of parents of breastfed infants with those of parents of formula fed infants.

METHODS

A survey was carried out with a convenience sample of pregnant women (gestational age 8-12 weeks) attending three maternity clinics in Scotland in 2000. Expectant mothers and their partners (n = 108 couples) completed the 17 item Iowa Infant Feeding Attitude Scale. Demographic information was collected by face-to-face interview and the method of feeding at discharge from hospital was obtained from medical records.

RESULTS

Parents of breastfed infants had more positive attitudes towards breastfeeding than parents of formula fed infants, and were more knowledgeable about the health benefits and nutritional superiority of breastfeeding. Fathers of both breastfed and formula fed infants were more likely than their partners to disapprove of women breastfeeding in public. Parents considered their chosen method of feeding to be the more convenient alternative. Mothers of formula fed infants were more likely to think that women who occasionally drink alcohol should not breastfeed.

CONCLUSION

Parents of formula fed infants had several misconceptions about breastfeeding. Use of the Iowa Infant Feeding Attitude Scale could help health professionals identify and address these in infant feeding discussions in the early antenatal period. Efforts should be made to include fathers in these infant-feeding discussions.

Effectiveness of the WHO/UNICEF guidelines on infant feeding for HIV-positive women: results from a prospective cohort study in South Africa

BACKGROUND

The World Health Organization (WHO) and UNICEF recommend that HIV-positive women should avoid all breastfeeding only if replacement feeding is acceptable, feasible, affordable, sustainable and safe. Little is known about the effectiveness of the implementation of these guidelines in developing country settings.

OBJECTIVE

To identify criteria to guide appropriate infant-feeding choices and to assess the effect of inappropriate choices on infant HIV-free survival.

METHOD

Prospective cohort study of 635 HIV-positive mother-infant pairs across three sites in South Africa to assess mother to child transmission of HIV. Semistructured questionnaires were used during home visits between the antenatal period and 36 weeks after delivery to collect data concerning appropriateness of infant feeding choices based on the WHO/UNICEF recommendations.

RESULTS

Three criteria were found to be associated with improved infant HIV-free survival amongst women choosing to formula feed: piped water; electricity, gas or paraffin for fuel; and disclosing HIV status. Using these criteria as a measure of appropriateness of choice: 95 of 311 women who met the criteria (30.5%) chose to breastfeed and 195 of 289 women who did not meet the criteria (67.4%) chose to formula feed. Infants of women who chose to formula feed without fulfilling these three criteria had the highest risk of HIV transmission/death (hazard ratio, 3.63; 95% confidence interval, 1.48-8.89).

CONCLUSIONS

Within operational settings, the WHO/UNICEF guidelines were not being implemented effectively, leading to inappropriate infant-feeding choices and consequent lower infant HIV-free survival. Counselling of mothers should include an assessment of individual and environmental criteria to support appropriate infant-feeding choices.

Health, morality, and infant feeding: British mothers' experiences of formula milk use in the early weeks

The way mothers feed their babies is, internationally, the subject of research, health policy initiatives, and popular discussion, which commonly affirm the mantra 'breast is best'. On one level, this mantra reflects scientific evidence about nutrition and maternal and infant health. From a socio-cultural perspective, the pro-breastfeeding message has, however, been considered an aspect of morality, which influences maternal identity in important ways. This article explores this idea. It does so primarily by reporting and discussing some findings from a study about British mothers' experiences of using formula milk for infant feeding. The paper begins by contextualising this discussion by briefly outlining some aspects of the construction of infant feeding as a social problem in Britain, focusing in particular on the influence of 'the new paradigm of health'.

Why women decide not to breastfeed

The reasons for the low frequency of breastfeeding at an urban medical center were evaluated in a study in which 81 women were interviewed concerning the factors affecting their choice of infant feeding method and attitudes toward breastfeeding. One-half of the women made their decision during pregnancy, and 41 percent did so before conception. They received information on infant feeding methods from health care providers, family, and friends. In addition to their own thoughts and feelings, family members had the most influence on the feeding method. The influence of health care providers was minimal, yet most women received early and comprehensive prenatal care. Although they thought that breastfeeding was better for the baby, the majority chose to bottle feed due to negative attitudes toward breastfeeding, conflicting responsibilities or schedules, convenience, negative breastfeeding experiences, and health or medical reasons.

Initiation of breastfeeding among mothers of very low birth weight infants

OBJECTIVE

To examine factors that predict the initiation of expressed milk feedings and the transition to direct breastfeedings among mothers of very low birth weight (VLBW) infants.

METHODS

The sample consists of 361 mother-infant pairs enrolled in a follow-up study of children aged 6 to 8 years who were born weighing <1501 g in 1 of 5 hospitals between 1991-1993. Chart review at birth provided data on neonatal characteristics and demographic factors at delivery were obtained by postpartum maternal interview. Information regarding infant feeding practices was obtained at follow-up.

RESULTS

In this study, 60% of mothers initiated expressed milk feedings for their VLBW infants. However, the duration of these feedings was brief with 52% of infants receiving 1 to 3 months or less of human milk feedings. Greater educational attainment, private insurance, and breastfeeding experience were each independently associated with the decision to provide expressed milk feedings. Only 27% of mothers reported directly breastfeeding their VLBW infants. The transition from expressed milk feedings to direct breastfeedings was positively associated with sociodemographic factors including maternal age, insurance status, and breastfeeding experience as well as the length of hospitalization, an indicator of infant health.

CONCLUSIONS

Sociodemographic factors were associated with both the decision to initiate expressed milk feedings and the transition to direct breastfeedings. However, factors relating to infant health only influenced the transition to direct breastfeedings. Intervention programs need to consider the sociodemographic factors that influence infant feeding decisions as well as specific challenges encountered by mothers of VLBW infants.

The impact of knowledge and social influences on adolescents' breast-feeding beliefs and intentions

OBJECTIVES

Many health promotion educational interventions assume that increasing knowledge directly influences beliefs, intentions and behaviour, whereas research suggests that knowledge alone is insufficient for behavioural change. Social cognition frameworks such as the Theory of Reasoned Action propose a central role for beliefs and social normative influences. This Scottish study evaluates the role of knowledge and social influences (subjective norms, exposure to breast-feeding, social barriers) on beliefs and future intentions to breast-feed or bottle-feed. Social influences from family and peers are investigated.

DESIGN

A cross-sectional between-subjects observational design was used. A questionnaire was administered to a sample of 229 (46%) male and 267 (54%) female adolescents aged 11-18 years.

SETTING

Participants completed questionnaires during lessons at three secondary schools in Central Scotland.

RESULTS

Knowledge about health benefits of breast-feeding was generally poor. Analyses found that perceived social barriers to breast-feeding moderated the relationship between knowledge and beliefs. More knowledge, positive beliefs and supportive subjective norms also predicted future intentions to breast-feed. Parental norms exerted greater influence than peer norms on adolescents' breast-feeding beliefs.

CONCLUSIONS

Knowledge and social influences are important predictors of positive breast-feeding beliefs and future intentions to breast-feed in adolescents. This has important implications for breast-feeding health promotion interventions in young people.

Infant-feeding attitudes of expectant mothers in Northern Ireland

Northern Ireland (NI) has one of the lowest rates of breast-feeding initiation and duration in both the UK and the industrialized world. This study therefore aimed to explore the relationship between infant-feeding attitudes and feeding intention and outcome in expectant mothers within NI. Expectant mothers (n = 200) were recruited from hospital antenatal booking clinics. Each completed a demographic questionnaire and the self-administered Iowa Infant Feeding Attitude Scale (IIFAS). Participants (n = 192) were followed up after birth through the Northern Ireland Maternity System. The IIFAS distinguished between those mothers who intended to breast-feed (higher IIFAS scores) and those who intended to artificially feed (lower IIFAS scores) as well as between those who breast-fed and those who artificially fed on discharge from hospital. The IIFAS was also able to distinguish between mothers in regard to feeding intention and outcome on the basis of education, socio-economic class, income and marital status. This suggests that the IIFAS could prove useful in the targeting and evaluation of intervention to promote breast-feeding.

Breastfeeding and Maternal Stress Response and Health

This article reviews findings on the maternal stress and health effects of lactation. Several significant associations have emerged. Compared with not breastfeeding, breastfeeding is associated with increased parasympathetic nervous system modulation, greater vascular stress response, lower perceived stress levels, and fewer depressive symptoms. Breastfeeding exclusively is associated with an attenuated initial sympathetic cardiac nervous system response to some laboratory stressors. Bottle-feeding is associated with increased sympathetic and decreased parasympathetic cardiac control. The act of breastfeeding is associated with decreased neuroendocrine response to stressors and decreased negative mood. Finally, breastfeeding is associated with enhanced physical and mental health compared with non-breastfeeding.

Breast feeding, bottle feeding, and maternal autonomic responses to stress

OBJECTIVE

The aim of this study was to examine the effects of breast feeding on autonomic nervous system (ANS) response to stressors.

METHODS

Sympathetic and parasympathetic activities were examined before, during, and after standard laboratory stressors in women who were either exclusively breast feeding (n=14) or nonexclusively breast feeding (n=14), and in non-postpartum controls (n=15).

RESULTS

Mothers who breast fed exclusively showed greater levels of parasympathetic cardiac modulation and slower heart rate (HR) throughout the session and less HR increase and preejection period (PEP) shortening to mental arithmetic (MA) than did nonexclusive breast feeders and controls. Nonexclusive breast-feeders showed greater electrodermal reactivity to, and greater differences in skin conductance response (SCR) frequency between baseline and recovery from cold pressor (CP) than did either exclusive breast-feeders or controls. Sympathetic activity was negatively related to the number of breast feedings and positively related to bottle feedings.

CONCLUSION

Breast feeding shifts maternal ANS balance toward relatively greater parasympathetic and lesser sympathetic activity; the opposite occurs with bottle feeding. The frequency of feeding also is a critical factor in determining breast feeding effects on maternal ANS function.

Prenatal drug exposure and maternal and infant feeding behaviour

OBJECTIVE

To evaluate feeding difficulties and maternal behaviour during a feeding session with 1 month old infants prenatally exposed to cocaine and/or opiates.

METHODS

The study is part of the maternal lifestyle study, which recruited 11 811 subjects at four urban hospitals, then followed 1388 from 1 to 36 months of age. Exposure to cocaine and opiates was determined by maternal interview and meconium assay. At the 1 month clinic visit, biological mothers were videotaped while bottle feeding their infants. This sample included 364 exposed to cocaine, 45 exposed to opiates, 31 exposed to both drugs, and 588 matched comparison infants. Mothers were mostly black, high school educated, and on public assistance. Videotapes were coded without knowledge of exposure status for frequency, duration and quality of infant sucking, arousal, feeding problems, and maternal feeding activity and interaction.

RESULTS

No cocaine effects were found on infant feeding measures, but cocaine-using mothers were less flexible (6.29 v 6.50), less engaged (5.77 v 6.22), and had shorter feeding sessions (638 v 683 seconds). Opiate exposed infants showed prolonged sucking bursts (29 v 20 seconds), fewer pauses (1.6 v 2.2 per minute), more feeding problems (0.55 v 0.38), and increased arousal (2.59 v 2.39). Their mothers showed increased activity (30 v 22), independent of their infants' feeding problems.

CONCLUSIONS

Previous concerns about feeding behaviour in cocaine exposed infants may reflect the quality of the feeding interaction rather than infant feeding problems related to prenatal exposure. However, opiate exposed infants and their mothers both contributed to increased arousal and heightened feeding behaviour.

Examining the correspondence of breastfeeding and bottle-feeding couples' infant feeding attitudes

Examining the correspondence of breastfeeding and bottle-feeding couples' infant feeding attitudes This report focuses on the comparison of infant feeding attitudes within breastfeeding (n = 126) and bottle-feeding (n = 101) couples and their socio-demographic details. The findings from this study reinforce the view that socio-demographic factors are associated with the mothers' choice of feeding method. However, this study highlights the influence of maternal and of paternal knowledge and attitudes which distinguish between breastfeeding and bottle-feeding couples. Fathers of bottle-feeding babies were found to have limited knowledge of health benefits of breastfeeding to both mothers and infants. However, bottle-feeding mothers, when compared with their partners, were more supportive towards bottle feeding and less negative towards breastfeeding. Fathers of breastfeeding babies, compared with their partners were found to be less aware of the benefits of breastfeeding. Furthermore, breastfeeding mothers when compared with their partners were more supportive towards breastfeeding. Fathers of both bottle and breast feeding babies were also found to be more embarrassed than their partners about mothers in general breastfeeding in front of nonfamily members. It seems that bottle-feeding mothers and all fathers could be better prepared in many aspects of breastfeeding by the nursing professions to allay the many misconceptions and the social embarrassment associated with breastfeeding, by providing appropriate information and support.