1
|
Finkelstein JL, Cuthbert A, Weeks J, Venkatramanan S, Larvie DY, De-Regil LM, Garcia-Casal MN. Daily oral iron supplementation during pregnancy. Cochrane Database Syst Rev 2024; 8:CD004736. [PMID: 39145520 PMCID: PMC11325660 DOI: 10.1002/14651858.cd004736.pub6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
BACKGROUND Iron and folic acid supplementation have been recommended in pregnancy for anaemia prevention, and may improve other maternal, pregnancy, and infant outcomes. OBJECTIVES To examine the effects of daily oral iron supplementation during pregnancy, either alone or in combination with folic acid or with other vitamins and minerals, as an intervention in antenatal care. SEARCH METHODS We searched the Cochrane Pregnancy and Childbirth Trials Registry on 18 January 2024 (including CENTRAL, MEDLINE, Embase, CINAHL, ClinicalTrials.gov, WHO's International Clinical Trials Registry Platform, conference proceedings), and searched reference lists of retrieved studies. SELECTION CRITERIA Randomised or quasi-randomised trials that evaluated the effects of oral supplementation with daily iron, iron + folic acid, or iron + other vitamins and minerals during pregnancy were included. DATA COLLECTION AND ANALYSIS Review authors independently assessed trial eligibility, ascertained trustworthiness based on pre-defined criteria, assessed risk of bias, extracted data, and conducted checks for accuracy. We used the GRADE approach to assess the certainty of the evidence for primary outcomes. We anticipated high heterogeneity amongst trials; we pooled trial results using a random-effects model (average treatment effect). MAIN RESULTS We included 57 trials involving 48,971 women. A total of 40 trials compared the effects of daily oral supplements with iron to placebo or no iron; eight trials evaluated the effects of iron + folic acid compared to placebo or no iron + folic acid. Iron supplementation compared to placebo or no iron Maternal outcomes: Iron supplementation during pregnancy may reduce maternal anaemia (4.0% versus 7.4%; risk ratio (RR) 0.30, 95% confidence interval (CI) 0.20 to 0.47; 14 trials, 13,543 women; low-certainty evidence) and iron deficiency at term (44.0% versus 66.0%; RR 0.51, 95% CI 0.38 to 0.68; 8 trials, 2873 women; low-certainty evidence), and probably reduces maternal iron-deficiency anaemia at term (5.0% versus 18.4%; RR 0.41, 95% CI 0.26 to 0.63; 7 trials, 2704 women; moderate-certainty evidence), compared to placebo or no iron supplementation. There is probably little to no difference in maternal death (2 versus 4 events, RR 0.57, 95% CI 0.12 to 2.69; 3 trials, 14,060 women; moderate-certainty evidence). The evidence is very uncertain for adverse effects (21.6% versus 18.0%; RR 1.29, 95% CI 0.83 to 2.02; 12 trials, 2423 women; very low-certainty evidence) and severe anaemia (Hb < 70 g/L) in the second/third trimester (< 1% versus 3.6%; RR 0.22, 95% CI 0.01 to 3.20; 8 trials, 1398 women; very low-certainty evidence). No trials reported clinical malaria or infection during pregnancy. Infant outcomes: Women taking iron supplements are probably less likely to have infants with low birthweight (5.2% versus 6.1%; RR 0.84, 95% CI 0.72 to 0.99; 12 trials, 18,290 infants; moderate-certainty evidence), compared to placebo or no iron supplementation. However, the evidence is very uncertain for infant birthweight (MD 24.9 g, 95% CI -125.81 to 175.60; 16 trials, 18,554 infants; very low-certainty evidence). There is probably little to no difference in preterm birth (7.6% versus 8.2%; RR 0.93, 95% CI 0.84 to 1.02; 11 trials, 18,827 infants; moderate-certainty evidence) and there may be little to no difference in neonatal death (1.4% versus 1.5%, RR 0.98, 95% CI 0.77 to 1.24; 4 trials, 17,243 infants; low-certainty evidence) or congenital anomalies, including neural tube defects (41 versus 48 events; RR 0.88, 95% CI 0.58 to 1.33; 4 trials, 14,377 infants; low-certainty evidence). Iron + folic supplementation compared to placebo or no iron + folic acid Maternal outcomes: Daily oral supplementation with iron + folic acid probably reduces maternal anaemia at term (12.1% versus 25.5%; RR 0.44, 95% CI 0.30 to 0.64; 4 trials, 1962 women; moderate-certainty evidence), and may reduce maternal iron deficiency at term (3.6% versus 15%; RR 0.24, 95% CI 0.06 to 0.99; 1 trial, 131 women; low-certainty evidence), compared to placebo or no iron + folic acid. The evidence is very uncertain about the effects of iron + folic acid on maternal iron-deficiency anaemia (10.8% versus 25%; RR 0.43, 95% CI 0.17 to 1.09; 1 trial, 131 women; very low-certainty evidence), or maternal deaths (no events; 1 trial; very low-certainty evidence). The evidence is uncertain for adverse effects (21.0% versus 0.0%; RR 44.32, 95% CI 2.77 to 709.09; 1 trial, 456 women; low-certainty evidence), and the evidence is very uncertain for severe anaemia in the second or third trimester (< 1% versus 5.6%; RR 0.12, 95% CI 0.02 to 0.63; 4 trials, 506 women; very low-certainty evidence), compared to placebo or no iron + folic acid. Infant outcomes: There may be little to no difference in infant low birthweight (33.4% versus 40.2%; RR 1.07, 95% CI 0.31 to 3.74; 2 trials, 1311 infants; low-certainty evidence), comparing iron + folic acid supplementation to placebo or no iron + folic acid. Infants born to women who received iron + folic acid during pregnancy probably had higher birthweight (MD 57.73 g, 95% CI 7.66 to 107.79; 2 trials, 1365 infants; moderate-certainty evidence), compared to placebo or no iron + folic acid. There may be little to no difference in other infant outcomes, including preterm birth (19.4% versus 19.2%; RR 1.55, 95% CI 0.40 to 6.00; 3 trials, 1497 infants; low-certainty evidence), neonatal death (3.4% versus 4.2%; RR 0.81, 95% CI 0.51 to 1.30; 1 trial, 1793 infants; low-certainty evidence), or congenital anomalies (1.7% versus 2.4; RR 0.70, 95% CI 0.35 to 1.40; 1 trial, 1652 infants; low-certainty evidence), comparing iron + folic acid supplementation to placebo or no iron + folic acid. A total of 19 trials were conducted in malaria-endemic countries, or in settings with some malaria risk. No studies reported maternal clinical malaria; one study reported data on placental malaria. AUTHORS' CONCLUSIONS Daily oral iron supplementation during pregnancy may reduce maternal anaemia and iron deficiency at term. For other maternal and infant outcomes, there was little to no difference between groups or the evidence was uncertain. Future research is needed to examine the effects of iron supplementation on other maternal and infant health outcomes, including infant iron status, growth, and development.
Collapse
Affiliation(s)
| | - Anna Cuthbert
- Cochrane Pregnancy and Childbirth Group, Department of Women's and Children's Health, University of Liverpool, Liverpool, UK
| | - Jo Weeks
- Cochrane Pregnancy and Childbirth Group, Department of Women's and Children's Health, University of Liverpool, Liverpool, UK
| | | | - Doreen Y Larvie
- Division of Nutritional Sciences, Cornell University, Ithaca, New York, USA
| | - Luz Maria De-Regil
- Multisectoral Action in Food Systems Unit, World Health Organization, Geneva, Switzerland
| | | |
Collapse
|
2
|
Bah M, Stelle I, Verhoef H, Saidykhan A, Moore SE, Susso B, Prentice AM, Cerami C. Early iron supplementation in exclusively breastfed Gambian infants: a randomized controlled trial. Bull World Health Organ 2024; 102:176-186. [PMID: 38420570 PMCID: PMC10898279 DOI: 10.2471/blt.23.289942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 10/25/2023] [Accepted: 11/19/2023] [Indexed: 03/02/2024] Open
Abstract
Objective To investigate the effect of daily iron supplementation for 14 weeks on the serum iron concentration and other markers of iron status in exclusively breastfed infants in Gambia. Methods A placebo-controlled, randomized, double-blind trial was performed in rural Gambia between 3 August 2021 and 9 March 2022. Overall, 101 healthy, exclusively breastfed infants aged 6 to 10 weeks were recruited at vaccination clinics and through community health workers. Infants were randomized to receive iron supplementation (7.5 mg/day as ferrous sulfate in sorbitol solution) or placebo for 98 days. Venous blood samples were collected at baseline and on day 99 to assess the serum iron concentration and other markers of iron and haematological status. Findings At day 99, the serum iron concentration was significantly higher in the iron supplementation group than the placebo group (crude difference in means: 2.5 µmol/L; 95% confidence interval: 0.6 to 4.3) and there were significant improvements in other iron and haematological markers. There were 10 serious adverse events (five in each group), 106 non-serious adverse events (54 with iron supplementation; 52 with placebo) and no deaths. There was no marked difference between the groups in maternally reported episodes of diarrhoea, fever, cough, skin infection, eye infection or nasal discharge. Conclusion In exclusively breastfed Gambian infants, iron supplementation from 6 weeks of age was associated with a significant improvement in markers of iron status at around 6 months of age. There was no indication of adverse effects on growth or infections.
Collapse
Affiliation(s)
- Mamadou Bah
- Medical Research Council Unit, The Gambia at the London School of Hygiene & Tropical Medicine, Atlantic Boulevard, Fajara, PO Box 273, Banjul, Gambia
| | - Isabella Stelle
- Department of Women and Children's Health, King's College London, London, England
| | - Hans Verhoef
- Division of Human Nutrition and Health, Wageningen University, Wageningen, Kingdom of the Netherlands
| | - Alasana Saidykhan
- Medical Research Council Unit, The Gambia at the London School of Hygiene & Tropical Medicine, Atlantic Boulevard, Fajara, PO Box 273, Banjul, Gambia
| | - Sophie E Moore
- Department of Women and Children's Health, King's College London, London, England
| | - Bubacarr Susso
- Medical Research Council Unit, The Gambia at the London School of Hygiene & Tropical Medicine, Atlantic Boulevard, Fajara, PO Box 273, Banjul, Gambia
| | - Andrew M Prentice
- Medical Research Council Unit, The Gambia at the London School of Hygiene & Tropical Medicine, Atlantic Boulevard, Fajara, PO Box 273, Banjul, Gambia
| | - Carla Cerami
- Medical Research Council Unit, The Gambia at the London School of Hygiene & Tropical Medicine, Atlantic Boulevard, Fajara, PO Box 273, Banjul, Gambia
| |
Collapse
|
3
|
Stelle I, Venkatesan S, Edmond K, Moore SE. Acknowledging the gap: a systematic review of micronutrient supplementation in infants under six months of age. Wellcome Open Res 2023; 5:238. [PMID: 33305011 PMCID: PMC7713887 DOI: 10.12688/wellcomeopenres.16282.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2023] [Indexed: 02/22/2023] Open
Abstract
Background: Micronutrient deficiencies remain common worldwide, but the consequences to growth and development in early infancy (under six months of age) are not fully understood. We present a systematic review of micronutrient interventions in term infants under six months of age, with a specific focus on iron supplementation. Methods: We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE (Ovid) and Embase (Ovid) from January 1980 through December 2019. Interventions included iron or multiple micronutrients (MMNs). Results: Of 11,109 records identified, 33 publications from 24 trials were included (19 iron and five MMN supplementation trials). All but one trial (evaluating only morbidity and mortality) evaluated the effect of supplementation on biochemical outcomes, ten reported on growth, 15 on morbidity and/or mortality and six on neuro-behavioural development. Low- and middle- income countries made up 88% (22/25) of the total trial locations. Meta-analysis was not possible due to extensive heterogeneity in both exposure and outcome measures. However, these trials indicated that infants less than six months of age benefit biochemically from early supplementation with iron, but the effect of additional nutrients or MMNs, along with the impacts on growth, morbidity and/or mortality, and neuro-behavioural outcomes remain unclear. Conclusions: Infants less than six months of age appear to benefit biochemically from micronutrient supplementation. However, well-powered randomised controlled trials are required to determine whether routine supplementation with iron or MMNs containing iron should commence before six months of life in exclusively breast-fed infants in low-resource settings.
Collapse
Affiliation(s)
- Isabella Stelle
- Department of Women and Children's Health, King's College Hospital, London, Westminster Bridge Road, London, SE1 7EH, UK,
| | - Sruthi Venkatesan
- Department of Women and Children's Health, King's College Hospital, London, Westminster Bridge Road, London, SE1 7EH, UK
| | - Karen Edmond
- Department of Women and Children's Health, King's College Hospital, London, Westminster Bridge Road, London, SE1 7EH, UK
| | - Sophie E. Moore
- Department of Women and Children's Health, King's College Hospital, London, Westminster Bridge Road, London, SE1 7EH, UK,Nutrition Unit, MRC Unit The Gambia at London School of Hygiene and Tropical Medicine, Banjul, The Gambia
| |
Collapse
|
4
|
Stelle I, Venkatesan S, Edmond K, Moore SE. Acknowledging the gap: a systematic review of micronutrient supplementation in infants under six months of age. Wellcome Open Res 2023; 5:238. [PMID: 33305011 PMCID: PMC7713887 DOI: 10.12688/wellcomeopenres.16282.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2020] [Indexed: 11/25/2022] Open
Abstract
Background: Micronutrient deficiencies remain common worldwide, but the consequences to growth and development in early infancy (under six months of age) are not fully understood. We present a systematic review of micronutrient interventions in term infants under six months of age, with a specific focus on iron supplementation. Methods: We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE (Ovid) and Embase (Ovid) from January 1980 through December 2019. Interventions included iron or multiple micronutrients (MMNs). Results: Of 11,109 records identified, 32 publications from 23 trials were included (18 iron and five MMN supplementation trials). All 23 trials evaluated the effect of supplementation on biochemical outcomes, ten reported on growth, 14 on morbidity and/or mortality and six on neuro-behavioural development. Low- and middle- income countries made up 88% (21/24) of the total trial locations. Meta-analysis was not possible due to extensive heterogeneity in both exposure and outcome measures. However, these trials indicated that infants less than six months of age benefit biochemically from early supplementation with iron, but the effect of additional nutrients or MMNs, along with the impacts on growth, morbidity and/or mortality, and neuro-behavioural outcomes remain unclear. Conclusions: Infants less than six months of age appear to benefit biochemically from micronutrient supplementation. However, well-powered randomised controlled trials are required to determine whether routine supplementation with iron or MMNs containing iron should commence before six months of life in exclusively breast-fed infants in low-resource settings.
Collapse
Affiliation(s)
- Isabella Stelle
- Department of Women and Children's Health, King's College Hospital, London, Westminster Bridge Road, London, SE1 7EH, UK,
| | - Sruthi Venkatesan
- Department of Women and Children's Health, King's College Hospital, London, Westminster Bridge Road, London, SE1 7EH, UK
| | - Karen Edmond
- Department of Women and Children's Health, King's College Hospital, London, Westminster Bridge Road, London, SE1 7EH, UK
| | - Sophie E. Moore
- Department of Women and Children's Health, King's College Hospital, London, Westminster Bridge Road, London, SE1 7EH, UK,Nutrition Unit, MRC Unit The Gambia at London School of Hygiene and Tropical Medicine, Banjul, The Gambia
| |
Collapse
|
5
|
Eekhout I, van Buuren S. Child development with the D-score: tuning instruments to unity. Gates Open Res 2022. [DOI: 10.12688/gatesopenres.13223.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The chapter familiarises the reader with an intuitive yet powerful methodology to tune instruments to a common unit, presenting a fresh approach that expresses measurements made by different instruments on the D-score scale. As a result, the reader may compare D-scores between ages, children or cohorts. It shows how to exploit common developmental milestones to bridge instruments and cohorts; presents an analysis to obtain D-scores from 16 cohorts and 14 instruments; compares D-score age-distribution across populations from four continents; suggests an indicator for the United Nations Sustainable Development Goals; and defines developmentally-on-track.
Collapse
|
6
|
Xu S, Ma L, Li H, Wang X, Wu M, Jing J, Chen X, Lan R, Tang W, Zhu Y. Iron Supplementation Is Associated with Improvement of Motor Development, Hemoglobin Level, and Weight in Preterm Infants during the First Year of Life in China. Nutrients 2022; 14:nu14132624. [PMID: 35807810 PMCID: PMC9267941 DOI: 10.3390/nu14132624] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/18/2022] [Accepted: 06/19/2022] [Indexed: 01/27/2023] Open
Abstract
Iron supplementation is recommended for preterm infants due to impaired iron endowment. However, the health outcomes of this recommendation remain controversial. Thus, this study aimed to determine the association of iron supplementation with neurobehavioral development, hemoglobin (Hb), and anthropometric characteristics in preterm infants. A retrospective cohort design was applied to collect data from 1568 preterm infants at 0–3 months of corrected age (mo CA) from a hospital in South China. Infants were categorized into a 3-month iron supplementation group (IG, n = 697) or a control group (CG, n = 871) according to medical records, and then followed through to 12 mo CA. Data on neurobehavioral development, anthropometry, Hb level, history of diseases, and nutrition were collected at 3, 6, and 12 mo CA. The results showed that, compared with the CG, iron supplementation was positively related to improved gross motor skills and weight at 6 mo CA (β = 1.894, β = 5.322) and 12 mo CA (β = 4.019, β = 6.830) and fine motor skills at 12 mo CA (β = 1.980), after adjustment for confounding factors including illness, nutritional supplements, and diet. Iron supplementation was also related to elevated Hb levels and its increase at 3 mo CA (β = 2.196, β = 3.920) and 6 mo CA (β = 3.011, β = 7.259). In conclusion, iron supplementation for 3 months in Chinese preterm infants is positively associated with improved motor development, elevated Hb levels, and higher body weight during the first year of life.
Collapse
Affiliation(s)
- Suhua Xu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
| | - Liya Ma
- Shenzhen Bao’an Women and Children’s Hospital, Jinan University, Shenzhen 518102, China;
| | - Hailin Li
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
| | - Xiaotong Wang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
| | - Miao Wu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
| | - Jiajia Jing
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
| | - Xiaoyan Chen
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
| | - Ruiling Lan
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
| | - Weike Tang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
| | - Yanna Zhu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (H.L.); (X.W.); (M.W.); (J.J.); (X.C.); (R.L.); (W.T.)
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Correspondence: ; Tel.: +86-20-87334627; Fax: +86-20-87330446
| |
Collapse
|
7
|
Keats EC, Oh C, Chau T, Khalifa DS, Imdad A, Bhutta ZA. Effects of vitamin and mineral supplementation during pregnancy on maternal, birth, child health and development outcomes in low- and middle-income countries: A systematic review. CAMPBELL SYSTEMATIC REVIEWS 2021; 17:e1127. [PMID: 37051178 PMCID: PMC8356361 DOI: 10.1002/cl2.1127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Background Almost two billion people who are deficient in vitamins and minerals are women and children in low- and middle-income countries (LMIC). These deficiencies are worsened during pregnancy due to increased energy and nutritional demands, causing adverse outcomes in mother and child. To reduce micronutrient deficiencies, several strategies have been implemented, including diet diversification, large-scale and targeted fortification, staple crop bio-fortification and micronutrient supplementation. Objectives To evaluate and summarize the available evidence on the effects of micronutrient supplementation during pregnancy in LMIC on maternal, fetal, child health and child development outcomes. This review will assess the impact of single micronutrient supplementation (calcium, vitamin A, iron, vitamin D, iodine, zinc, vitamin B12), iron-folic acid (IFA) supplementation, multiple micronutrient (MMN) supplementation, and lipid-based nutrient supplementation (LNS) during pregnancy. Search Methods We searched papers published from 1995 to 31 October 2019 (related programmes and good quality studies pre-1995 were limited) in CAB Abstracts, CINAHL, Cochrane Central Register of Controlled Trials, Embase, International Initiative for Impact Evaluations, LILACS, Medline, POPLINE, Web of Science, WHOLIS, ProQuest Dissertations & Theses Global, R4D, WHO International Clinical Trials Registry Platform. Non-indexed grey literature searches were conducted using Google, Google Scholar, and web pages of key international nutrition agencies. Selection Criteria We included randomized controlled trials (individual and cluster-randomized) and quasi-experimental studies that evaluated micronutrient supplementation in healthy, pregnant women of any age and parity living in a LMIC. LMIC were defined by the World Bank Group at the time of the search for this review. While the aim was to include healthy pregnant women, it is likely that these populations had one or more micronutrient deficiencies at baseline; women were not excluded on this basis. Data Collection and Analysis Two authors independently assessed studies for inclusion and risk of bias, and conducted data extraction. Data were matched to check for accuracy. Quality of evidence was assessed using the GRADE approach. Main Results A total of 314 papers across 72 studies (451,723 women) were eligible for inclusion, of which 64 studies (439,649 women) contributed to meta-analyses. Seven studies assessed iron-folic acid (IFA) supplementation versus folic acid; 34 studies assessed MMN vs. IFA; 4 studies assessed LNS vs. MMN; 13 evaluated iron; 13 assessed zinc; 9 evaluated vitamin A; 11 assessed vitamin D; and 6 assessed calcium. Several studies were eligible for inclusion in multiple types of supplementation. IFA compared to folic acid showed a large and significant (48%) reduction in the risk of maternal anaemia (average risk ratio (RR) 0.52, 95% CI 0.41 to 0.66; studies = 5; participants = 15,540; moderate-quality evidence). As well, IFA supplementation demonstrated a smaller but significant, 12% reduction in risk of low birthweight (LBW) babies (average RR 0.88, 95% CI 0.78 to 0.99; studies = 4; participants = 17,257; high-quality evidence). MMN supplementation was defined as any supplement that contained at least 3 micronutrients. Post-hoc analyses were conducted, where possible, comparing the differences in effect of MMN with 4+ components and MMN with 3 or 4 components. When compared to iron with or without FA, MMN supplementation reduced the risk of LBW by 15% (average RR 0.85, 95% CI 0.77 to 0.93; studies = 28; participants = 79,972); this effect was greater in MMN with >4 micronutrients (average RR 0.79, 95% CI 0.71 to 0.88; studies = 19; participants = 68,138 versus average RR 1.01, 95% CI 0.92 to 1.11; studies = 9; participants = 11,834). There was a small and significant reduction in the risk of stillbirths (average RR 0.91; 95% CI 0.86 to 0.98; studies = 22; participants = 96,772) and a small and significant effect on the risk of small-for-gestational age (SGA) (average RR 0.93; 95% CI 0.88 to 0.98; studies = 19; participants = 52,965). For stillbirths and SGA, the effects were greater among those provided MMN with 4+ micronutrients. Children whose mothers had been supplemented with MMN, compared to IFA, demonstrated a 16% reduced risk of diarrhea (average RR 0.84; 95% CI 0.76 to 0.92; studies = 4; participants = 3,142). LNS supplementation, compared to MMN, made no difference to any outcome; however, the evidence is limited. Iron supplementation, when compared to no iron or placebo, showed a large and significant effect on maternal anaemia, a reduction of 47% (average RR 0.53, 95% CI 0.43 to 0.65; studies = 6; participants = 15,737; moderate-quality evidence) and a small and significant effect on LBW (average RR 0.88, 95% CI 0.78 to 0.99; studies = 4; participants = 17,257; high-quality evidence). Zinc and vitamin A supplementation, each both compared to placebo, had no impact on any outcome examined with the exception of potentially improving serum/plasma zinc (mean difference (MD) 0.43 umol/L; 95% CI -0.04 to 0.89; studies = 5; participants = 1,202) and serum/plasma retinol (MD 0.13 umol/L; 95% CI -0.03 to 0.30; studies = 6; participants = 1,654), respectively. When compared to placebo, vitamin D supplementation may have reduced the risk of preterm births (average RR 0.64; 95% CI 0.40 to 1.04; studies = 7; participants = 1,262), though the upper CI just crosses the line of no effect. Similarly, calcium supplementation versus placebo may have improved rates of pre-eclampsia/eclampsia (average RR 0.45; 95% CI 0.19 to 1.06; studies = 4; participants = 9,616), though the upper CI just crosses 1. Authors' Conclusions The findings suggest that MMN and vitamin supplementation improve maternal and child health outcomes, including maternal anaemia, LBW, preterm birth, SGA, stillbirths, micronutrient deficiencies, and morbidities, including pre-eclampsia/eclampsia and diarrhea among children. MMN supplementation demonstrated a beneficial impact on the most number of outcomes. In addition, MMN with >4 micronutrients appeared to be more impactful than MMN with only 3 or 4 micronutrients included in the tablet. Very few studies conducted longitudinal analysis on longer-term health outcomes for the child, such as anthropometric measures and developmental outcomes; this may be an important area for future research. This review may provide some basis to guide continual discourse around replacing IFA supplementation with MMN along with the use of single micronutrient supplementation programs for specific outcomes.
Collapse
Affiliation(s)
- Emily C. Keats
- Centre for Global Child HealthThe Hospital for Sick ChildrenTorontoCanada
| | - Christina Oh
- Centre for Global Child HealthThe Hospital for Sick ChildrenTorontoCanada
| | - Tamara Chau
- Centre for Global Child HealthThe Hospital for Sick ChildrenTorontoCanada
| | - Dina S. Khalifa
- Centre for Global Child HealthThe Hospital for Sick ChildrenTorontoCanada
| | - Aamer Imdad
- PediatricsUpstate Medical University, SyracuseNew YorkUSA
| | - Zulfiqar A. Bhutta
- Centre for Global Child HealthThe Hospital for Sick ChildrenTorontoCanada
| |
Collapse
|
8
|
Eekhout I, van Buuren S. Child development with the D-score: tuning instruments to unity. Gates Open Res 2021. [DOI: 10.12688/gatesopenres.13223.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The chapter familiarises the reader with an intuitive yet powerful methodology to tune instruments to a common unit, presenting a fresh approach that expresses measurements made by different instruments on the D-score scale. As a result, the reader may compare D-scores between ages, children or cohorts. It shows how to exploit common developmental milestones to bridge instruments and cohorts; presents an analysis to obtain D-scores from 16 cohorts and 14 instruments; compares D-score age-distribution across populations from four continents; suggests an indicator for the United Nations Sustainable Development Goals; and defines developmentally-on-track.
Collapse
|
9
|
Lumeng JC, Li X, He Y, Gearhardt A, Sturza J, Kaciroti NA, Li M, Asta K, Lozoff B. Greater analgesic effects of sucrose in the neonate predict greater weight gain to age 18 months. Appetite 2020; 146:104508. [PMID: 31698014 DOI: 10.1016/j.appet.2019.104508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/31/2019] [Accepted: 10/31/2019] [Indexed: 10/25/2022]
Abstract
Intraoral sucrose has analgesic effects in the newborn period. The hedonic and analgesic effects of sucrose overlap and hedonic response to sweet food is associated with adiposity. The potential association between the analgesic effects of intraoral sucrose in the newborn period and subsequent weight gain has not been examined. Healthy, term newborns received 25% intraoral sucrose or water prior to metabolic screen heel stick. Negative affect, quiet alert behavior, and sleepiness were coded during heel stick. Weight and length were measured and z-score (WLZ) calculated at birth, 9, and 18 months. Mixed models tested associations of behavioral response to heel stick with WLZ trajectory among infants receiving sucrose (n = 154) versus water (n = 117). Among infants receiving sucrose prior to heel stick with birth WLZ ≥ the median, less negative affect and more sleepiness during heel stick were each associated with greater increases in WLZ. These associations were not present among infants receiving water only prior to heel stick. Greater analgesic effects of sucrose in the neonate were associated with greater future increases in WLZ, especially among infants with higher birth WLZ. Greater opioid-mediated newborn behavioral response to intraoral sucrose may be a marker for future obesity risk. CLINICAL TRIALS NUMBER: NCT02728141.
Collapse
Affiliation(s)
- Julie C Lumeng
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, USA; Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, USA; Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA.
| | - Xing Li
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Yunyi He
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, USA
| | - Ashley Gearhardt
- Department of Psychology, University of Michigan, Ann Arbor, MI, USA
| | - Julie Sturza
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, USA
| | - Niko A Kaciroti
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, USA; Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Ming Li
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Katharine Asta
- University of Michigan Medical School, Ann Arbor, MI, USA
| | - Betsy Lozoff
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, USA; Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, USA
| |
Collapse
|
10
|
Tam E, Keats EC, Rind F, Das JK, Bhutta ZA. Micronutrient Supplementation and Fortification Interventions on Health and Development Outcomes among Children Under-Five in Low- and Middle-Income Countries: A Systematic Review and Meta-Analysis. Nutrients 2020; 12:E289. [PMID: 31973225 PMCID: PMC7071447 DOI: 10.3390/nu12020289] [Citation(s) in RCA: 104] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/10/2020] [Accepted: 01/19/2020] [Indexed: 12/20/2022] Open
Abstract
Micronutrient deficiencies continue to be widespread among children under-five in low- and middle-income countries (LMICs), despite the fact that several effective strategies now exist to prevent them. This kind of malnutrition can have several immediate and long-term consequences, including stunted growth, a higher risk of acquiring infections, and poor development outcomes, all of which may lead to a child not achieving his or her full potential. This review systematically synthesizes the available evidence on the strategies used to prevent micronutrient malnutrition among children under-five in LMICs, including single and multiple micronutrient (MMN) supplementation, lipid-based nutrient supplementation (LNS), targeted and large-scale fortification, and point-of-use-fortification with micronutrient powders (MNPs). We searched relevant databases and grey literature, retrieving 35,924 papers. After application of eligibility criteria, we included 197 unique studies. Of note, we examined the efficacy and effectiveness of interventions. We found that certain outcomes, such as anemia, responded to several intervention types. The risk of anemia was reduced with iron alone, iron-folic acid, MMN supplementation, MNPs, targeted fortification, and large-scale fortification. Stunting and underweight, however, were improved only among children who were provided with LNS, though MMN supplementation also slightly increased length-for-age z-scores. Vitamin A supplementation likely reduced all-cause mortality, while zinc supplementation decreased the incidence of diarrhea. Importantly, many effects of LNS and MNPs held when pooling data from effectiveness studies. Taken together, this evidence further supports the importance of these strategies for reducing the burden of micronutrient malnutrition in children. Population and context should be considered when selecting one or more appropriate interventions for programming.
Collapse
Affiliation(s)
- Emily Tam
- Centre for Global Child Health, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; (E.T.); (E.C.K.)
| | - Emily C. Keats
- Centre for Global Child Health, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; (E.T.); (E.C.K.)
| | - Fahad Rind
- Centre of Excellence in Women and Child’s Health, Aga Khan University, Karachi 74800, Pakistan;
| | - Jai K. Das
- Division of Women and Child Health, Aga Khan University, Karachi 74800, Pakistan;
| | - Zulfiqar A. Bhutta
- Centre for Global Child Health, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; (E.T.); (E.C.K.)
- Centre of Excellence in Women and Child’s Health, Aga Khan University, Karachi 74800, Pakistan;
| |
Collapse
|
11
|
Beluska-Turkan K, Korczak R, Hartell B, Moskal K, Maukonen J, Alexander DE, Salem N, Harkness L, Ayad W, Szaro J, Zhang K, Siriwardhana N. Nutritional Gaps and Supplementation in the First 1000 Days. Nutrients 2019; 11:E2891. [PMID: 31783636 PMCID: PMC6949907 DOI: 10.3390/nu11122891] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 12/23/2022] Open
Abstract
Optimized nutrition during the first 1000 days (from conception through the 2nd birthday) is critical for healthy development and a healthy life for the newborn. Pregnancy and the postpartum period are accompanied by physiological changes, increased energy needs, and changing requirements in the nutrients critical for optimal growth and development. Infants and toddlers also experience physiological changes and have specific nutritional needs. Food and nutrition experts can provide women of childbearing age with adequate dietary advice to optimize nutrition, as well as guidance on selecting appropriate dietary supplements. Considering the approaching 2020-2025 Dietary Guidelines for Americans (DGA) will be making specific recommendations for children, it is important to provide accurate scientific information to support health influencers in the field of nutrition. The purpose of this review is to summarize the nutrition and supplementation literature for the first 1000 days; to highlight nutritional and knowledge gaps; and to educate nutrition influencers to provide thoughtful guidance to mothers and families. Optimal nutrition during pregnancy through early childhood is critical for supporting a healthy life. Nutrition influencers, such as dietitians, obstetricians/gynecologists, and other relevant health professionals, should continue guiding supplement and food intake and work closely with expectant families and nutrition gatekeepers.
Collapse
Affiliation(s)
- Katrina Beluska-Turkan
- Church & Dwight, Co., Inc., Product Development Nutritional Sciences, Princeton, NJ 08540, USA; (K.B.-T.); (K.M.); (L.H.); (W.A.); (J.S.); (K.Z.)
| | - Renee Korczak
- Premier Nutrition, LLC, Bernardsville, NJ 07924, USA;
| | - Beth Hartell
- PearTree Nutrition, LLC, Seattle, WA 98115, USA;
| | - Kristin Moskal
- Church & Dwight, Co., Inc., Product Development Nutritional Sciences, Princeton, NJ 08540, USA; (K.B.-T.); (K.M.); (L.H.); (W.A.); (J.S.); (K.Z.)
| | | | | | - Norman Salem
- DSM Nutritional Products, Columbia, MD 21045, USA;
| | - Laura Harkness
- Church & Dwight, Co., Inc., Product Development Nutritional Sciences, Princeton, NJ 08540, USA; (K.B.-T.); (K.M.); (L.H.); (W.A.); (J.S.); (K.Z.)
| | - Wafaa Ayad
- Church & Dwight, Co., Inc., Product Development Nutritional Sciences, Princeton, NJ 08540, USA; (K.B.-T.); (K.M.); (L.H.); (W.A.); (J.S.); (K.Z.)
| | - Jacalyn Szaro
- Church & Dwight, Co., Inc., Product Development Nutritional Sciences, Princeton, NJ 08540, USA; (K.B.-T.); (K.M.); (L.H.); (W.A.); (J.S.); (K.Z.)
| | - Kelly Zhang
- Church & Dwight, Co., Inc., Product Development Nutritional Sciences, Princeton, NJ 08540, USA; (K.B.-T.); (K.M.); (L.H.); (W.A.); (J.S.); (K.Z.)
| | - Nalin Siriwardhana
- Church & Dwight, Co., Inc., Product Development Nutritional Sciences, Princeton, NJ 08540, USA; (K.B.-T.); (K.M.); (L.H.); (W.A.); (J.S.); (K.Z.)
| |
Collapse
|
12
|
Weber AM, Rubio-Codina M, Walker SP, van Buuren S, Eekhout I, Grantham-McGregor SM, Araujo MC, Chang SM, Fernald LCH, Hamadani JD, Hanlon C, Karam SM, Lozoff B, Ratsifandrihamanana L, Richter L, Black MM. The D-score: a metric for interpreting the early development of infants and toddlers across global settings. BMJ Glob Health 2019; 4:e001724. [PMID: 31803508 PMCID: PMC6882553 DOI: 10.1136/bmjgh-2019-001724] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/28/2019] [Accepted: 08/30/2019] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Early childhood development can be described by an underlying latent construct. Global comparisons of children's development are hindered by the lack of a validated metric that is comparable across cultures and contexts, especially for children under age 3 years. We constructed and validated a new metric, the Developmental Score (D-score), using existing data from 16 longitudinal studies. METHODS Studies had item-level developmental assessment data for children 0-48 months and longitudinal outcomes at ages >4-18 years, including measures of IQ and receptive vocabulary. Existing data from 11 low-income, middle-income and high-income countries were merged for >36 000 children. Item mapping produced 95 'equate groups' of same-skill items across 12 different assessment instruments. A statistical model was built using the Rasch model with item difficulties constrained to be equal in a subset of equate groups, linking instruments to a common scale, the D-score, a continuous metric with interval-scale properties. D-score-for-age z-scores (DAZ) were evaluated for discriminant, concurrent and predictive validity to outcomes in middle childhood to adolescence. RESULTS Concurrent validity of DAZ with original instruments was strong (average r=0.71), with few exceptions. In approximately 70% of data rounds collected across studies, DAZ discriminated between children above/below cut-points for low birth weight (<2500 g) and stunting (-2 SD below median height-for-age). DAZ increased significantly with maternal education in 55% of data rounds. Predictive correlations of DAZ with outcomes obtained 2-16 years later were generally between 0.20 and 0.40. Correlations equalled or exceeded those obtained with original instruments despite using an average of 55% fewer items to estimate the D-score. CONCLUSION The D-score metric enables quantitative comparisons of early childhood development across ages and sets the stage for creating simple, low-cost, global-use instruments to facilitate valid cross-national comparisons of early childhood development.
Collapse
Affiliation(s)
- Ann M Weber
- School of Community Health Sciences, University of Nevada Reno, Reno, Nevada, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
| | | | - Susan P Walker
- Caribbean Institute for Health Research, University of the West Indies, Kingston, Jamaica
| | - Stef van Buuren
- Netherlands Organization for Applied Scientific Research TNO, Leiden, Netherlands
- Methodology & Statistics, Utrecht University, Utrecht, Netherlands
| | - Iris Eekhout
- Netherlands Organization for Applied Scientific Research TNO, Leiden, Netherlands
| | | | | | - Susan M Chang
- Caribbean Institute for Health Research, University of the West Indies, Kingston, Jamaica
| | - Lia CH Fernald
- School of Public Health, University of California Berkeley, Berkeley, California, USA
| | | | - Charlotte Hanlon
- Institute of Psychiatry, Psychology and Neuroscience, Health Service and Population Research Department, Centre for Global Mental Health, King's College London, London, UK
- Department of Psychiatry, WHO Collaborating Centre for Mental Health Research and Capacity Building, School of Medicine, and Centre for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Simone M Karam
- Department of Pediatrics, Federal University of Rio Grande, Rio Grande, Brazil
| | - Betsy Lozoff
- Center for Human Growth and Development, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Linda Richter
- Centre of Excellence in Human Development, University of the Witwatersrand, Johannesburg, South Africa
| | - Maureen M Black
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland, USA
- International Education, RTI International, Research Triangle Park, North Carolina, USA
| |
Collapse
|
13
|
Abioye AI, McDonald EA, Park S, Ripp K, Bennett B, Wu HW, Pond-Tor S, Sagliba MJ, Amoylen AJ, Baltazar PI, Tallo V, Acosta LP, Olveda RM, Kurtis JD, Friedman JF. Maternal anemia type during pregnancy is associated with anemia risk among offspring during infancy. Pediatr Res 2019; 86:396-402. [PMID: 31129681 PMCID: PMC6702090 DOI: 10.1038/s41390-019-0433-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 02/05/2019] [Accepted: 05/06/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND We evaluated the association between etiology of maternal anemia and iron status throughout infancy. METHODS Samples from a study designed to examine Praziquantel treatment during pregnancy were used (n = 359). All women were infected with schistosomiasis and randomized to Praziquantel or placebo at 16 ± 2 weeks' gestation. Hemoglobin, serum ferritin (SF), soluble transferrin receptor (sTfR), hepcidin, C-reactive protein, and interleukin-6 were measured in maternal and infant blood. The relationship between both maternal Praziquantel treatment and etiology of anemia and infant iron status was evaluated. RESULTS Maternal iron-deficiency anemia was associated with increased risk of infant anemia at 6 months of age. Infants of mothers with the lowest levels of circulating hepcidin during gestation, likely a marker for iron deficiency, had higher sTfR:SF levels and lower hemoglobin levels, particularly at 12 months of age. Maternal non-iron-deficiency anemia (NIDA) did not impact infant anemia risk or iron status. Maternal treatment for schistosomiasis had no effect on infant hematologic status. CONCLUSIONS Maternal iron deficiency anemia was associated with an increased risk for anemia or iron deficiency during late infancy. We did not observe an association between maternal NIDA and increased risk for iron deficiency during infancy.
Collapse
Affiliation(s)
- Ajibola I Abioye
- The Warren Alpert Medical School of Brown University, Providence, RI,Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI,Department of Pediatrics, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Emily A McDonald
- The Warren Alpert Medical School of Brown University, Providence, RI,Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI,Department of Pediatrics, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Sangshin Park
- The Warren Alpert Medical School of Brown University, Providence, RI, USA. .,Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI, USA. .,Department of Pediatrics, The Warren Alpert Medical School of Brown University, Providence, RI, USA. .,Graduate School of Urban Public Health, University of Seoul, Seoul, Republic of Korea.
| | - Kelsey Ripp
- The Warren Alpert Medical School of Brown University, Providence, RI,Department of Medicine, University of Pennsylvania, Philadelphia, PA,Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA
| | - Brady Bennett
- Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI,School of Public Health, Brown University, Providence, RI,The Health Council of South Florida, Miami, FL
| | - Hannah W Wu
- The Warren Alpert Medical School of Brown University, Providence, RI,Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI,Department of Pediatrics, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Sunthorn Pond-Tor
- The Warren Alpert Medical School of Brown University, Providence, RI,Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI,Department of Pathology and Laboratory Medicine, The Warren Alpert Medical School of Brown University, Providence, RI
| | | | | | - Palmera I Baltazar
- Remedios Trinidad Romualdez Hospital, Tacloban City, Leyte, The Philippines
| | - Veronica Tallo
- Research Institute for Tropical Medicine, Manila, Philippines
| | - Luz P Acosta
- Research Institute for Tropical Medicine, Manila, Philippines
| | | | - Jonathan D Kurtis
- The Warren Alpert Medical School of Brown University, Providence, RI,Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI,Department of Pathology and Laboratory Medicine, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Jennifer F Friedman
- The Warren Alpert Medical School of Brown University, Providence, RI,Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI,Department of Pediatrics, The Warren Alpert Medical School of Brown University, Providence, RI
| |
Collapse
|
14
|
Bora R, Ramasamy S, Brown B, Wolfson J, Rao R. Effect of iron supplementation from neonatal period on the iron status of6-month-old infants at-risk for early iron deficiency: a randomized interventional trial. J Matern Fetal Neonatal Med 2019; 34:1421-1429. [PMID: 31258019 DOI: 10.1080/14767058.2019.1638358] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To investigate the effects of iron supplementation from the second day after birth on 6-month hemoglobin (Hb), serum ferritin and motor development in infants at risk of early iron deficiency. STUDY DESIGN Term (37-41 weeks) infants of anemic (Hb ≤ 100 g L-1; N = 100) and non-anemic (Hb > 100 g L-1; N = 100) mothers were randomized to daily iron supplementation at a dose of 2 mg kg-1 from 36 h of age (N = 50, each of anemic and non-anemic mothers) or no iron-supplementation (N = 50 each of anemic and non-anemic mothers). Hb, serum ferritin and motor development at 6 months were compared in the two groups. RESULTS Iron-supplemented infants had higher Hb (103.7 ± 9.3 g L-1 versus 97.0 ± 9.4 g L-1, p < .0001) and serum ferritin (133.93 ± 52.41 ng mL-1 versus 78.09 ± 42.03 ng mL-1, p < .001) concentrations, compared with the no iron-supplementation group. Their motor development was closer to age-appropriate norms than the no iron-supplementation group (5.83 ± 0.69 versus 5.18 ± 1.35, p < .01). CONCLUSION Early Iron supplementation is effective for improving iron status and motor development at 6 months in infants at risk for early iron deficiency.
Collapse
Affiliation(s)
- Reeta Bora
- Neonatal Unit, Assam Medical College, Dibrugarh, India
| | | | - Benjamin Brown
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Julian Wolfson
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Raghavendra Rao
- Department of Pediatrics, Division of Neonatology, University of Minnesota, Minneapolis, MN, USA
| |
Collapse
|
15
|
Larson LM, Kubes JN, Ramírez‐Luzuriaga MJ, Khishen S, H. Shankar A, Prado EL. Effects of increased hemoglobin on child growth, development, and disease: a systematic review and meta‐analysis. Ann N Y Acad Sci 2019; 1450:83-104. [DOI: 10.1111/nyas.14105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 03/24/2019] [Accepted: 04/03/2019] [Indexed: 12/29/2022]
Affiliation(s)
| | | | - Maria J. Ramírez‐Luzuriaga
- Doctoral Program in Nutrition and Health Sciences, Laney Graduate SchoolEmory University Atlanta Georgia
| | - Sarah Khishen
- Department of Public Health SciencesUniversity of California – Davis Davis California
| | - Anuraj H. Shankar
- Eijkman‐Oxford Clinical Research UnitEijkman Institute for Molecular Biology Jakarta Indonesia
- The Centre for Tropical Medicine and Global Health, Nuffield Department of MedicineUniversity of Oxford Oxford United Kingdom
| | | |
Collapse
|
16
|
Lewies A, Zandberg L, Baumgartner J. Interventions to prevent iron deficiency during the first 1000 days in low-income and middle-income countries: recent advances and challenges. Curr Opin Clin Nutr Metab Care 2019; 22:223-229. [PMID: 30893089 DOI: 10.1097/mco.0000000000000557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Iron deficiency remains highly prevalent in women and young children in low-income and middle-income countries. To prevent the potentially life-long consequences of iron deficiency when occurring during early life, the WHO recommends iron supplementation of pregnant women and young children. However, increasing evidence of limited efficacy and risk of current iron intervention strategies are cause of concern. This review aims to highlight recent advances and challenges of established and novel intervention strategies for the prevention of iron deficiency during the first 1000 days in low-income and middle-income countries. RECENT FINDINGS Recent meta-analyses and trials challenged the WHO's current recommendation to provide iron-folic acid rather than multiple micronutrient supplements during routine antenatal care. Furthermore, several studies explored optimal windows for iron supplementation, such as prior to conception. Studies are demonstrating that infectious and noninfectious inflammation is compromising the efficacy of iron interventions in vulnerable groups. Therefore, strategies addressing iron deficiency should focus on targeting infection and inflammation while simultaneously providing additional iron. Furthermore, both iron deficiency and iron supplementation may promote an unfavourable gut microbiota. Recent trials in infants indicate that the provision of a prebiotic together with iron may alleviate the adverse effects of iron on the gut microbiome and gut inflammation, and may even enhance iron absorption. SUMMARY Recent studies highlight the need for and potential of novel intervention strategies that increase the efficacy and limit the potential harm of universal iron supplementation.
Collapse
Affiliation(s)
- Angélique Lewies
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, South Africa
| | - Lizelle Zandberg
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, South Africa
| | - Jeannine Baumgartner
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, South Africa
- Laboratory of Human Nutrition, Institute of Food, Nutrition and Health, ETH Zurich, Switzerland
| |
Collapse
|
17
|
Santos DCC, Angulo-Barroso RM, Li M, Bian Y, Sturza J, Richards B, Lozoff B. Timing, duration, and severity of iron deficiency in early development and motor outcomes at 9 months. Eur J Clin Nutr 2018; 72:332-341. [PMID: 29235557 PMCID: PMC5843498 DOI: 10.1038/s41430-017-0015-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 08/22/2017] [Accepted: 09/11/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND/OBJECTIVES Poorer motor development is reported in infants with iron deficiency (ID). The role of timing, duration and severity is unclear. We assessed relations between ID timing, duration, and severity and gross motor scores, neurological integrity, and motor behavior quality at 9 months. SUBJECTS/METHODS Iron status was determined at birth and 9 months in otherwise healthy term Chinese infants. The 9-month motor evaluation included the Peabody Developmental Motor Scale (PDMS-2), Infant Neurological International Battery (INFANIB), and motor quality factor. Motor outcomes were analyzed by ID timing (fetal-neonatal, infancy), duration, and severity. For severity, we also considered maternal iron status. RESULTS The data were available for 1194 infants. Iron status was classified as fetal-neonatal and infancy ID (n = 253), fetal-neonatal ID (n = 256), infancy ID (n = 288), and not ID (n = 397). Compared with not ID, infants with fetal-neonatal or infancy ID had lower locomotion scores (effect size ds = 0.19, 0.18) and those with ID in both periods (longer duration) had lower locomotion and overall PDMS-2 gross motor scores (ds = 0.20, 0.18); ID groups did not differ. More severe ID in late pregnancy was associated with lower INFANIB Vestibular function (p = 0.01), and total score (p = 0.03). More severe ID in infancy was associated with lower scores for locomotion (p = 0.03), overall gross motor (p = 0.05). CONCLUSIONS Fetal-neonatal and/or infancy ID was associated with lower overall gross motor development and locomotion test scores at 9 months. Associations with ID severity varied by ID timing: more severe ID in late pregnancy, poorer neurological integrity; more severe ID in infancy, poorer gross motor development.
Collapse
Affiliation(s)
- Denise C C Santos
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, 48109-5406, USA
- Human Movement Sciences Graduate Program, Methodist University of Piracicaba, Piracicaba, SP, Brazil
| | - Rosa M Angulo-Barroso
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, 48109-5406, USA.
- Department of Kinesiology, California State University, Northridge, CA, 91330-8287, USA.
| | - Ming Li
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Yang Bian
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Julie Sturza
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, 48109-5406, USA
| | - Blair Richards
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, 48109-5406, USA
| | - Betsy Lozoff
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, 48109-5406, USA
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI, 48109-5718, USA
| |
Collapse
|
18
|
Effects of iron supplementation of low-birth-weight infants on cognition and behavior at 7 years: a randomized controlled trial. Pediatr Res 2018; 83:111-118. [PMID: 28953856 DOI: 10.1038/pr.2017.235] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 07/16/2017] [Indexed: 02/07/2023]
Abstract
BackgroundLow-birth-weight infants (LBW) are at an increased risk of iron deficiency that has been associated with impaired neurodevelopment. We hypothesized that iron supplementation of LBW infants improves cognitive scores and reduces behavioral problems until school age.MethodsWe randomized 285 marginally LBW (2,000-2,500 g) infants to receive 0, 1, or 2 mg/kg/day of iron supplements from 6 weeks to 6 months of age. At 7 years of age, 205 participants were assessed regarding cognition using Wechsler Intelligence Scale for Children (WISC-IV) and behavior using the parental questionnaires Child Behavior Checklist (CBCL) and Five to Fifteen (FTF).ResultsThere were no significant differences between the intervention groups in WISC-IV or FTF. However, the CBCL scores for externalizing problems were significantly different, in favor of supplemented children (P=0.045). When combining the supplemented groups, they had significantly lower scores for externalizing behavior compared with placebo (median (interquartile range): 44 [34;51] vs. 48.5 [41;56] P=0.013), and their risk ratio (95% confidence interval) for a total behavioral score above the cutoff for clinical problems was 0.31 (0.09-1.0), P=0.054.ConclusionLower scores of externalizing behavior in supplemented children support our previous findings at 3 years, and suggest that iron supplementation may have long-lasting effects on behavioral functions.
Collapse
|
19
|
The impacts of maternal iron deficiency and being overweight during pregnancy on neurodevelopment of the offspring. Br J Nutr 2017; 118:533-540. [DOI: 10.1017/s0007114517002410] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AbstractBoth maternal Fe deficiency (ID) and being overweight or obese (Ow/Ob, BMI≥25 kg/m2) may negatively affect offspring brain development. However, the two risk factors correlate and their independent effects on infant neurodevelopment are unclear. PREOBE is a prospective observational study that included 331 pregnant Spanish women, of whom 166 had pre-gestational Ow/Ob. Fe status was analysed at 34 weeks and at delivery, and babies were assessed using Bayley III scales of neurodevelopment at 18 months. In confounder-adjusted analyses, maternal ID at 34 weeks was associated with lower composite motor scores at 18 months (mean 113·3 (sd 9·9) v. 117·1 (sd 9·2), P=0·039). Further, the offspring of mothers with ID at delivery had lower cognitive scores (114·0 (sd 9·7) v. 121·5 (sd 10·9), P=0·039) and lower receptive, expressive and composite (99·5 (sd 8·6) v. 107·6 (sd 8·3), P=0·004) language scores. The negative associations between maternal ID at delivery and Bayley scores remained even when adjusting for maternal Ow/Ob and gestational diabetes. Similarly, maternal Ow/Ob correlated with lower gross motor scores in the offspring (12·3 (sd 2·0) v. 13·0 (sd 2·1), P=0·037), a correlation that remained when adjusting for maternal ID. In conclusion, maternal ID and pre-gestational Ow/Ob are both negatively associated with Bayley scores at 18 months, but independently and on different subscales. These results should be taken into account when considering Fe supplementation for pregnant women.
Collapse
|
20
|
Clark KM, Li M, Zhu B, Liang F, Shao J, Zhang Y, Ji C, Zhao Z, Kaciroti N, Lozoff B. Breastfeeding, Mixed, or Formula Feeding at 9 Months of Age and the Prevalence of Iron Deficiency and Iron Deficiency Anemia in Two Cohorts of Infants in China. J Pediatr 2017; 181:56-61. [PMID: 27836288 PMCID: PMC5274569 DOI: 10.1016/j.jpeds.2016.10.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/25/2016] [Accepted: 10/12/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To assess associations between breastfeeding and iron status at 9 months of age in 2 samples of Chinese infants. STUDY DESIGN Associations between feeding at 9 months of age (breastfed as sole milk source, mixed fed, or formula fed) and iron deficiency anemia (IDA), iron deficiency, and iron sufficiency were determined in infants from Zhejiang (n = 142) and Hebei (n= 813) provinces. Iron deficiency was defined as body iron < 0 mg/kg, and IDA as iron deficiency + hemoglobin < 110 g/L. Multiple logistic regression assessed associations between feeding pattern and iron status. RESULTS Breastfeeding was associated with iron status (P < .001). In Zhejiang, 27.5% of breastfed infants had IDA compared with 0% of formula-fed infants. The odds of iron deficiency/IDA were increased in breastfed and mixed-fed infants compared with formula-fed infants: breastfed vs formula-fed OR, 28.8 (95% CI, 3.7-226.4) and mixed-fed vs formula-fed OR, 11.0 (95% CI, 1.2-103.2). In Hebei, 44.0% of breastfed infants had IDA compared with 2.8% of formula-fed infants. With covariable adjustment, odds of IDA were increased in breastfed and mixed-fed groups: breastfed vs formula-fed OR, 78.8 (95% CI, 27.2-228.1) and mixed-fed vs formula-fed OR, 21.0 (95% CI, 7.3-60.9). CONCLUSIONS In both cohorts, the odds of iron deficiency/IDA at 9 months of age were increased in breastfed and mixed-fed infants, and iron deficiency/IDA was common. Although the benefits of breastfeeding are indisputable, these findings add to the evidence that breastfeeding in later infancy identifies infants at risk for iron deficiency/IDA in many settings. Protocols for detecting and preventing iron deficiency/IDA in breastfed infants are needed. TRIAL REGISTRATION ClinicalTrials.gov: NCT00642863 and NCT00613717.
Collapse
Affiliation(s)
- Katy M. Clark
- Center for Human Growth and Development, University of Michigan, Ann Arbor, USA
| | - Ming Li
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Bingquan Zhu
- Department of Child Health Care, Zhejiang University Children’s Hospital, Hangzhou, China
| | - Furong Liang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Jie Shao
- Department of Child Health Care, Zhejiang University Children’s Hospital, Hangzhou, China
| | - Yueyang Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Chai Ji
- Department of Child Health Care, Zhejiang University Children’s Hospital, Hangzhou, China
| | - Zhengyan Zhao
- Department of Child Health Care, Zhejiang University Children’s Hospital, Hangzhou, China
| | - Niko Kaciroti
- Center for Human Growth and Development, University of Michigan, Ann Arbor, USA
| | - Betsy Lozoff
- Center for Human Growth and Development, University of Michigan, Ann Arbor, USA,Department of Pediatrics and Communicable Diseases, CS Mott Children’s Hospital, University of Michigan, USA
| |
Collapse
|
21
|
Angulo-Barroso RM, Li M, Santos DC, Bian Y, Sturza J, Jiang Y, Kaciroti N, Richards B, Lozoff B. Iron Supplementation in Pregnancy or Infancy and Motor Development: A Randomized Controlled Trial. Pediatrics 2016; 137:peds.2015-3547. [PMID: 26936859 PMCID: PMC4811316 DOI: 10.1542/peds.2015-3547] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/21/2015] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Insufficient iron levels for optimal fetal and infant development is a concern during pregnancy and infancy. The goal of this study was to assess the effects of iron supplementation in pregnancy and/or infancy on motor development at 9 months. METHODS The study was a randomized controlled trial (RCT) of infancy iron supplementation linked to an RCT of pregnancy iron supplementation, conducted in Hebei, China. A total of 1482 infants were randomly assigned to receive placebo (n = 730) or supplemental iron (n = 752) from 6 weeks to 9 months. Gross motor development (assessed by using the Peabody Developmental Motor Scale, Second Edition, instrument) was the primary outcome. Neurologic integrity and motor quality were secondary outcomes. RESULTS Motor outcome was available for 1196 infants, divided into 4 supplementation period groups: (1) placebo in pregnancy/placebo in infancy (n = 288); (2) placebo in pregnancy/iron in infancy (n = 305); (3) iron in pregnancy/placebo in infancy (n = 298); and (4) iron in pregnancy/iron in infancy (n = 305). Using the Peabody Developmental Motor Scale, instrument, iron supplementation in infancy but not pregnancy improved gross motor scores: overall, P < .001; reflexes, P = .03; stationary, P < .001; and locomotion, P < .001. Iron supplementation in infancy improved motor scores by 0.3 SD compared with no supplementation or supplementation during pregnancy alone. Effects of iron supplementation in infancy alone were similar to effects with iron in both pregnancy and infancy. CONCLUSIONS The RCT design supports the causal inference that iron supplementation in infancy, with or without iron supplementation in pregnancy, improved gross motor test scores at 9 months.
Collapse
Affiliation(s)
- Rosa M. Angulo-Barroso
- Department of Kinesiology, California State University, Northridge, Northridge, California;,Center for Human Growth and Development, and
| | - Ming Li
- Department of Pediatrics, and
| | - Denise C.C. Santos
- Center for Human Growth and Development, and,Human Movement Sciences Graduate Program, Methodist University of Piracicaba, Piracicaba, SP, Brazil
| | | | | | - Yaping Jiang
- Clinical Laboratory, Peking University First Hospital, Beijing, China; and
| | | | | | - Betsy Lozoff
- Center for Human Growth and Development, and,Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan
| |
Collapse
|