Child growth and duration of breast feeding in urban Zambia

Breastfeeding Beyond 12 Months: Is There Evidence for Health Impacts?

Because breastfeeding provides optimal nutrition and other benefits for infants (e.g., lower risk of infectious disease) and benefits for mothers (e.g., less postpartum bleeding), health organizations recommend that healthy infants be exclusively breastfed for 4 to 6 months in the United States and 6 months internationally. Recommendations related to how long breastfeeding should continue, however, are inconsistent. The objective of this article is to review the literature related to evidence for benefits of breastfeeding beyond 1 year for mothers and infants. In summary, human milk represents a good source of nutrients and immune components beyond 1 year. Some studies point toward lower infant mortality in undernourished children breastfed for >1 year, and prolonged breastfeeding increases interbirth intervals. Data on other outcomes (e.g., growth, diarrhea, obesity, and maternal weight loss) are inconsistent, often lacking sufficient control for confounding variables. There is a substantial need for rigorous, prospective, mixed-methods, cross-cultural research on this topic. Expected final online publication date for the Annual Review of Nutrition, Volume 41 is September 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Risk factors for severe acute malnutrition in children below 5 y of age in India: a case-control study

OBJECTIVE

To determine the possible risk factors for severe acute malnutrition (SAM) in children below 5 y admitted in a hospital in north India.

METHODS

This case-control study was conducted in a medical college hospital in children below 5 y of age. All cases of SAM (diagnosed as per WHO definition) between 6 and 59 mo of age were compared with age-matched controls with weight for height above -2SD of WHO 2006 growth standards. Data regarding socio-demographic parameters, feeding practices and immunization were compared between the groups by univariable and multivariable logistic regression models.

RESULTS

A total of 76 cases and 115 controls were enrolled. Among the 14 factors compared, maternal illiteracy, daily family income less than Rs. 200, large family size, lack of exclusive breast feeding in first 6 mo, bottle feeding, administration of pre-lacteals, deprivation of colostrum and incomplete immunization were significant risk factors for SAM. Regarding complementary feeding, it was the consistency, rather than the age of initiation, frequency and variety which showed a significant influence on occurrence of SAM. Multivariate analysis revealed that the risk of SAM was independently associated with 6 factors, namely, illiteracy among mothers, incomplete immunization, practice of bottle feeding, consistency of complementary feeding, deprivation of colostrum and receipt of pre-lacteals at birth.

CONCLUSIONS

The present study identifies certain risk factors which need to be focused on during health planning and policy making related to children with SAM in India.

Breastfeeding up to two years of age or beyond and its influence on child growth and development: a systematic review

A systematic review was undertaken to identify studies describing the global prevalence of breastfeeding up to two years of age or beyond and its effects on child growth and development. The MEDLINE and LILACS databases were searched without any language or date restrictions, retrieving 3,561 titles. All retrieved titles, 453 abstracts and 49 full-text articles were read. Articles with maximum breastfeeding duration of over two years were included. An analysis was carried out of 19 articles that met the inclusion criteria resulting in a combined prevalence of breastfeeding at two years of age of 33 % (95%CI: 0.23; 0.42). Increasing trends towards breastfeeding up to two years of age or beyond were observed in the past decades in South Asia. The six studies analyzing the effects of breastfeeding up to two years of age or beyond on child growth showed contradictory results. No association was found with child development. It is concluded that evidence on the medium-term effects of breastfeeding up to two years of age or beyond is scarce and contradictory. Hence, further research is needed regarding this practice.

Survival and health benefits of breastfeeding versus artificial feeding in infants of HIV-infected women: developing versus developed world

Infant feeding policies for HIV-infected women in developing countries differ from policies in developed countries. This article summarizes the epidemiologic data on the risks and benefits of various infant feeding practices for HIV-infected women living in different contexts. Artificial feeding can prevent a large proportion of mother-to-child HIV transmission but also is associated with increases in morbidity and mortality among exposed-uninfected and HIV-infected children. Antiretroviral drugs can be used during lactation and reduce risks of transmission. For most of the developing world, the health and survival benefits of breastfeeding exceed the risks of HIV transmission, especially when antiretroviral interventions are provided.

Growth faltering due to breastfeeding cessation in uninfected children born to HIV-infected mothers in Zambia

BACKGROUND

The effect of breastfeeding on growth in HIV-exposed infants is not well described.

OBJECTIVE

The objective was to evaluate the effect of early breastfeeding cessation on growth.

DESIGN

In a trial conducted in Lusaka, Zambia, HIV-infected mothers were randomly assigned to exclusive breastfeeding for 4 mo followed by rapid weaning to replacement foods or exclusive breastfeeding for 6 mo followed by introduction of complementary foods and continued breastfeeding for a duration of the mother's choice. Weight-for-age z score (WAZ), length-for-age z score (LAZ), and weight-for-length z score (WLZ) and the self-reported breastfeeding practices of 593 HIV-uninfected singletons were analyzed. Generalized estimating equations were used to adjust for confounders.

RESULTS

WAZ scores declined precipitously between 4.5 and 15 mo. The decline was slower in the breastfed infants. At 9, 12, and 15 mo, mean WAZs were, respectively, -0.74, -0.92, and -1.06 in infants who were reportedly breastfed and were -1.07, -1.20, and -1.31 in the weaned infants (P = 0.003, 0.007, and 0.02, respectively). No differences were observed past 15 mo. Breastfeeding practice was not associated with LAZ, which declined from -0.98 to -2.24 from 1 to 24 mo. After adjustment for birth weight, maternal viral load, body mass index, education, season, and marital and socioeconomic status, not breastfeeding was associated with a 0.28 decline in WAZ between 4.5 and 15 mo (P < 0.0001). During the rainy season, not breastfeeding was associated with a larger WAZ decline (0.33) than during the dry season (0.22; P for interaction = 0.02).

CONCLUSIONS

Early growth is compromised in uninfected children born to HIV-infected Zambian mothers. Continued breastfeeding partially mitigates this effect through 15 mo. Nutritional interventions to complement breastfeeding after 6 mo are urgently needed. This trial was registered at clinicaltrials.gov as NCT00310726.

Risk factors for low Kaup index among children in rural ethnic minority areas of Yunnan, China

BACKGROUND

The general living standard and health level have been greatly improved in China. But the result of a significant change in a child's growth level has not been reported in the Yunnan rural minority area. The aim of this study was to identify the risk factors for low Kaup index in the Dai peoples' autonomous region to construct a better health service system in rural minority areas.

METHODS

A total of 1173 mother-child pairs were selected in 36 villages of the Dai peoples' autonomous region. Sampled mothers were interviewed using a structured questionnaire. Sampled children were measured for weight and height.

RESULTS

In total, 36.1% of the candidate group was under weight, 12.0% was wasting, and 30.8% had stunted growth. A child's gender (odds ratio; OR, 1.42; 95% confidence interval; 95% CI, 1.07-1.88), existence of a weaning food (OR, 0.35; 95% CI, 0.26-0.46), grasp of the cause of the child's malnutrition (OR, 1.82; 95% CI, 1.16-2.89), positiveness to information on better nutrition (OR, 2.97; 95% CI, 1.07-8.18), coincidence of the child-rearing plan between parents (OR, 3.15; 95% CI, 1.12-4.11), and existence of a doctor who can consult about child-rearing (OR, 3.17; 95% CI, 1.22-8.22) indicated significant relationships to the low value of a child's Kaup index.

CONCLUSION

The mother's child-rearing behavior and social support were identified as risk factors. An offer of effective and abundant information to mothers, and the existence of professionals with whom mothers can consult immediately, were required to construct a better health system in the target area.

A qualitative exploration of rural feeding and weaning practices, knowledge and attitudes on nutrition

AIM

An exploratory qualitative investigation was done to determine the feeding and weaning practices, knowledge and attitudes towards nutrition of mothers/caregivers of children up to 3 years old attending baby clinics in the Moretele district (South Africa).

METHODOLOGY

Qualitative data collection on six relevant nutrition topics was done using focus group interviews. Trained moderators, using a pre-tested, structured interview schedule, interviewed participants in six age groups. Focus group interviews were taped, transcribed and translated. Content analysis produced systematic data descriptions and ethnography provided descriptive data.

RESULTS

Breast-feeding was the choice feed and bottle-feeding was only given when breast-feeding was impossible. Solid food was introduced early (at 2-3 months) and a mixed family diet at 7-9 months. Milk feeds were stopped completely from 18-24 months. Weaning diets were compromised due to poor food choices, preparation practices and limited variety. The participant's nutrition knowledge regarding specific foods, their functions and recommended quantities was poor. The women adhered to their cultural beliefs regarding food choices and preparation practices.

CONCLUSION

The data analysis revealed that inadequate nutrition knowledge and adherence to cultural practices lead to poor-quality feeding practices. Cultural factors and taboos have a powerful influence on feeding practices and eating patterns. Young mothers often find it impossible to ignore their ill-informed elders or peer group. Nutrition knowledge needs to be changed in a first step towards implementing improved feeding practices. Facilitated group discussions could focus on possible solutions for the identified nutrition-related problems.

Breastfeeding and growth in rural Kenyan toddlers

Research has not provided unequivocal support for the recommendation to continue breastfeeding until children reach at least age 24 months. In many circumstances, breastfeeding duration is chosen or conditioned by factors other than scientific evidence and recommendations. Even in communities where breastfeeding into the second year is the norm, a significant number of toddlers are weaned before the recommended age. The research reported here was conducted in a rural community of western Kenya. We prospectively followed a cohort of 264 children for 6 months (mean age at baseline, 14.1 +/- 2.4 months) to examine the effect of variable breastfeeding duration on length and weight gain. We found that breastfeeding was positively associated with growth in a manner that we inferred to be causal, the effect being stronger on linear growth than on weight gain. This was despite the fact that in a cohort where 95% were breastfeeding at baseline, the prevalence of stunting (height-for-age below -2 standard deviations of the WHO-NCHS reference) was already 48%. The present paper examines the socioeconomic characteristics, sanitation, morbidity, and complementary feeding practices that define the context of this apparently contradictory relationship. The population was poor, no household had running water, and malaria is endemic in the study area. Complementary feeding was initiated for 93% of the cohort before age 3 months. The weaning diet was bulky (77% energy from carbohydrate), and high in phytate content ([phytate]:[zinc] molar ratio, 28). Diet quality, judged by diversity and animal source food intake, was low. Several micronutrient intakes were below current recommendations, including riboflavin (63%), niacin equivalents (64%), calcium (72%), iron (74%) and zinc (33%). Based on a locally defined socioeconomic status scale, children in higher SES households were breastfed for a shorter duration than were children from poorer households. Sanitation and water consumption modified the effect of breastfeeding duration on growth: the effect was stronger in the absence of a pit latrine and at low water consumption. Our results support the recommendation to sustain breastfeeding in the second year, particularly in economically depressed environments with inadequate sanitation and water supplies.

Continued breastfeeding and child growth in the second year of life: a prospective cohort study in western Kenya

BACKGROUND

The value of postinfancy breastfeeding for growth and nutritional status is debated. We have investigated this issue in a longitudinal study.

METHODS

We prospectively followed up a cohort of 264 children in western Kenya for 6 months (mean age 14 months [range 9-18] at baseline) to investigate the nature of the association between breastfeeding and growth. Only 14 (5.3%) children had been weaned at baseline, and 173 (65.5%) were still breastfed at follow-up. For analysis, children were classified into three groups of breastfeeding duration as a proportion of the total follow-up period (0-49%, n=42; 50-99%, n=49; and 100%, n=173).

FINDINGS

In general linear models multivariate analysis, children in the longest-duration breastfeeding group gained 3.4 cm (p=0.0001) and 370 g (p=0.005) more than those in the shortest duration group, and 0.6 cm (p=0.0015) and 230 g (p=0.038) more than children in the intermediate group. The strongest association between breastfeeding and linear growth was observed in households that had no latrine and daily water use of less than 10 L per person.

INTERPRETATION

Our findings support WHO's recommendation to continue breastfeeding for at least 2 years, especially in settings with poor sanitation and inadequate water supply.

Prevalence and correlates of malnutrition among children in rural minority areas of China

BACKGROUND

Child growth retardation and malnutrition remain a matter of uttermost public concern in economically disadvantaged areas of China. The present study aimed to estimate the prevalence of protein-energy malnutrition with various anthropometric indices and examine its correlates in a large sample of poor rural minority children.

METHODS

A total of 2019 children under 7 years of age belonging to the Hani, Yi, Hui, Miao ethnic minority groups and the Han major group were drawn from four poor rural minority counties in the Yunnan Province of China. Well-trained investigators completed child physical measurements and maternal interviews. Protein-energy malnutrition was defined as being underweight (weight for age), wasting (weight for height) and stunting (height for age) on the basis of reference data from the National Center of Health Statistics (NCHS)/World Health Organization (WHO).

RESULTS

The respective prevalence of moderate and severe protein-energy malnutrition was 15.8 and 3.1% for underweight children, 31.8 and 19.2% for stunting and 0.9 and 0.5% for wasting. Stunting was most common in children aged 2 years. Boys were more likely to suffer from malnutrition. Logistic regression analyses showed that lower family income, lower parental height, belonging to the Miao, Yi and Hani ethnic groups compared with Han and poorer maternal child-rearing behavior significantly increased the risk for stunting of children.

CONCLUSIONS

Protein-energy malnutrition is relatively high in the rural minority children of China. Chronic socioeconomic underdevelopment and genetic effects, rather than a severe or immediate lack of food, may lead to protein-energy malnutrition.

Risk factors for early childhood malnutrition in Uganda

OBJECTIVE

To assess the dietary and environmental factors influencing stunting and other signs of poor nutritional status of children <30 months of age in a central Ugandan community, whose main dietary staples are banana (matoki) and maize.

METHODS

The study was a cross-sectional survey using stratified multistage random sampling to select households with a child <30 months of age in rural and semi-urban environments. A questionnaire was administered to mothers of 261 infants and toddlers in their home setting. Their health status was assessed by clinical examination and anthropometric measurements (mid-upper arm circumference [MUAC], weight, and supine length).

RESULTS

A large minority (21.5%) of the children surveyed were found in poor health after clinical examination: 3.8% being classified as suffering from kwashiorkor and 5.7% with marasmus. A high proportion of children were stunted (23. 8%), underweight (24.1%), or had low MUAC (21.6%). Although rural living, poor health, the use of unprotected water supplies, lack of charcoal as fuel, lack of milk consumption, and lack of personal hygiene were shown as risk factors for marasmus and underweight, different factors were found to be associated with risk of stunting and low MUAC, despite these three parameters being significantly correlated. For stunting the risk factors were: age of the child, poor health, prolonged breastfeeding (from >18 months to <24 months), low socioeconomic status of the family, poor education of the mother of infants <12 months, lack of paraffin as fuel, consumption of food of low energy density (<350 kcal/100 g dry matter), presence of eye pathology, and consumption of small meals. Risk factors for low MUAC were poor health, lack of meat and cow's milk consumption, low intake of energy from fat, and less well educated and older mothers. Food taboos had no influence on any of the anthropometric measurements. Although 93.1% of the children had been immunized against tuberculosis, polio, diphtheria, and measles and showed better general health than children who were not immunized, there was a high prevalence of infection in the week preceding the survey interview, including diarrhea (23.0%), malaria (32.3%), or cough/influenza (72.8%).

CONCLUSIONS

This first account of dietary and environmental risk factors involved in the etiology of early childhood malnutrition in Uganda indicates differences in risk factors for marasmus and underweight compared with stunting and low MUAC. The high prevalence of malnutrition and current infection of children in this survey suggests poor immune function as a result of inadequate nutrition.

Maternal and infant health problems after normal childbirth: a randomised controlled study in Zambia

STUDY OBJECTIVES

The main aim of the study was to discover if a midwife home visiting programme has a significant effect on the prevalence of health problems and breast feeding behaviour of mothers who delivered normally and their healthy fullterm newborn babies, during a period of 42 days after delivery. Another aim was to compare the mothers', the midwife's, and the doctor's findings of prevalence of health problems at the end of the puerperium period.

DESIGN

A randomised controlled trial was carried out. One group of mothers and their infants were randomly allocated to a home visiting group (Group A); the other group (Group B) was only visited at day 42.

SETTING

The study was carried out at the University Teaching Hospital (UTH) in Lusaka, the capital city of Zambia.

PARTICIPANTS

A total of 408 mothers who had a normal delivery and gave birth to a healthy fullterm infant, as assessed by the attending midwife, were randomised to two groups. Group A consisted of 208 mother/infant dyads who were visited by a midwife in their homes at days 3, 7, 28, and 42 after delivery and Group B consisted of 200 mother/infant dyads who were only visited at day 42.

MAIN RESULTS

At day 42 an equal proportion (30%) of mothers in both groups perceived that they had health problems. The prevalence of infant health problems in Group B was significantly higher (p < 0.01) as perceived by mothers. There were more mothers in Group B (p < 0.01) perceiving insufficient milk production and giving supplementary feeding. At day 42, mothers in Group A (56%) took more actions than mothers in Group B (41%) to solve infant health problems (p < 0.03). In both groups the mothers' perceived own health problems, were significantly higher (p < 0.01) than those observed by the obstetrician and those observed by the midwife. The midwife found more infant health problems in Group B (p < 0.01) than in Group A and more infants with health problems in both groups compared with the paediatrician's findings (p < 0.01).

CONCLUSIONS

There was a significant difference between the mothers' reported health problems and the health problems identified by the midwife and the doctors. The study shows that a midwife home visit and individual health education to mothers, reduce the prevalence of infant health problems, and enables the mother to more often take action when an infant health problem is identified. There is a need to re-evaluate the midwifery training curriculums with the intention to include more infant management care.