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Ellen Hertzmark
Harvard University
SurgeryImmunologyVitaminPopulationMedicine
120Publications
45H-index
9,211Citations
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Publications 114
Newest
#1Omar LwenoH-Index: 5
Last. Lindsay H. AllenH-Index: 61
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The effect of maternal multivitamin supplementation on breast milk vitamin B12 concentrations has not been examined in Tanzania, where the prevalence of maternal plasma B12 insufficiency is 25.6%. Multivitamins (containing 50 µg vitamin B12) or placebo were provided during pregnancy and in the postpartum period. Breast milk samples were collected at or around six weeks postpartum from 491 participants in a trial of multivitamins (NCT00197548). Linear and logistic regression models were used to e...
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#1Omar Lweno (Ifakara Health Institute)H-Index: 5
Last. Wafaie W. FawziH-Index: 65
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OBJECTIVE: A recent trial of vitamin B12 supplementation among Indian children 6-30 months found no effect on the incidence of diarrhea and respiratory infections. These results differ with studies in adults that showed improvement of the immune response following treatment with vitamin B12. We sought to determine how the adequacy of vitamin B12 concentrations in breast milk could act as immune modulator and protect against the incidence of diarrhea and respiratory infections of children up to 1...
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#1Yanping Li (Harvard University)H-Index: 48
#2Josje D. Schoufour (Hogeschool van Amsterdam)H-Index: 14
Last. Frank B. Hu (Harvard University)H-Index: 205
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Abstract Objective To examine how a healthy lifestyle is related to life expectancy that is free from major chronic diseases. Design Prospective cohort study. Setting and participants The Nurses’ Health Study (1980-2014; n=73 196) and the Health Professionals Follow-Up Study (1986-2014; n=38 366). Main exposures Five low risk lifestyle factors: never smoking, body mass index 18.5-24.9, moderate to vigorous physical activity (≥30 minutes/day), moderate alcohol intake (women: 5-15 g/day; men 5-30 ...
10 CitationsSource
#1Pili Kamenju (Harvard University)H-Index: 1
#2Ellen Hertzmark (Harvard University)H-Index: 45
Last. Wafaie W. Fawzi (Harvard University)H-Index: 65
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To identify factors associated with plasma polyunsaturated fatty acid (PUFA) levels among 3-month-old Tanzanian infants. Infants (n = 238) and mothers (n = 193) randomly selected from participants in the neonatal vitamin A supplementation randomized controlled trial. A cross-sectional study of maternal–infant pairs at 3 months postpartum. All infant total, n-3, n-6, and individual PUFA levels were correlated with maternal levels. Infant plasma n-3 PUFA levels were higher when maternal n-3 PUFA l...
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#2Anne Marie DarlingH-Index: 6
Last. Wafaie W. FawziH-Index: 65
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We examined the associations of plasma vitamin D concentration and adverse pregnancy outcomes among HIV-negative women in Dar-es-Salaam, Tanzania. We used an unmatched case-control study design, with 25-hydroxyvitamin D [25(OH)D] concentration assessed in the first trimester. Cases were individuals with adverse pregnancy outcomes, including stillbirth, premature birth, or small for gestational age births (SGA). Unconditional logistic regression and weighted logistic regression models were used t...
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#1Ajibola I. Abioye (Harvard University)H-Index: 8
#2Said Aboud (MUHAS: Muhimbili University of Health and Allied Sciences)H-Index: 27
Last. Wafaie W. Fawzi (Harvard University)H-Index: 65
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Screening and diagnosis of iron deficiency anemia (IDA) is cumbersome as it may require testing for hemoglobin, ferritin, and an inflammatory biomarker. The aim of this study was to compare the diagnostic capacity of hematologic biomarkers to detect IDA among pregnant women in Tanzania. We pooled data from an iron supplementation trial of 1500 iron-replete pregnant woman and a prospective cohort of 600 iron-deficient pregnant women. Receiver operating characteristic curves (ROC) for hematologic ...
1 CitationsSource
#1Ramadhani A. Noor (Harvard University)H-Index: 10
#2Ajibola I. Abioye (Harvard University)H-Index: 8
Last. Wafaie W. Fawzi (Harvard University)H-Index: 65
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BACKGROUND: Zinc and vitamin A supplementation have both been shown to affect iron status, hemoglobin (Hb) concentration, and anemia in animal and human studies. However, evidence on their combined use in pregnancy, in the context of iron-folic acid (IFA) supplementation, remains limited. OBJECTIVE: This study determined the effects of prenatal zinc, vitamin A, and iron supplementation on maternal hematologic and micronutrient status at delivery in Tanzania. METHODS: We analyzed 2 large randomiz...
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#1Shraddha Bajaria (Ifakara Health Institute)
#2Charles Festo (Ifakara Health Institute)H-Index: 8
Last. Ramadhani Abdul (Ifakara Health Institute)H-Index: 4
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Intermittent preventive treatment during pregnancy (IPTp) is a highly-recommended intervention to prevent maternal and neonatal complications associated with malaria infection. Despite fairly high antenatal care (ANC) coverage in Tanzania, low IPTp uptake rates represent a gap in efforts to decrease complications attributed to malaria in pregnancy. The objective of this study was to examine if availability, readiness and managing authority are associated with uptake of IPTp during ANC. Data for ...
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#1Batool A. Haider (Harvard University)H-Index: 19
#2Donna SpiegelmanH-Index: 128
Last. Wafaie W. Fawzi (Harvard University)H-Index: 65
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#2Ashley L BuchananH-Index: 11
Last. Wafaie W. FawziH-Index: 65
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