Influence of vitamin D serum concentration, prenatal care and social determinants on birth weight: a northeastern Brazilian cohort study

Pereira, Marcos; Carvalho, Gisele Queiroz; Santos, Djanilson Barbosa dos; Oliveira, Ana Mayra Andrade de

doi:10.1017/s0007114519001004

Cited by 11 publications

(11 citation statements)

References 33 publications

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“…Information on birth weight was collected from the municipality's Epidemiological Survey (VIEP) registration system. When necessary, home visits were performed at the end of the study for those pregnant women whose data on gestational outcomes were not found in the VIEP [19,20] ..…”

Section: Discussionmentioning

confidence: 99%

“…In the follow-up of the study, the pregnant women were monitored until the birth of their child [19,20] . The birth weight was measured with the child naked using a digital paediatric scale (Welmy®), with a capacity of 15 kg and a 10 g interval.…”

Section: Discussionmentioning

confidence: 99%

“…The details of the cohort procedures are described in previous studies [19,20] . In the rst stage of the cohort (baseline), the information on socio-economic and demographic conditions, reproductive and/or obstetric history, and lifestyle were collected during the enrolment of pregnant women at the prenatal services, and responses were recorded using a questionnaire.…”

Section: Data On Covariatesmentioning

confidence: 99%

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Association Between Maternal Dietary Pattern and Infant Birth Weight: a Structural Equation Modelling Analysis

Santana

Queiroz

Pereira

et al. 2021

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Background: The mother’s diet during pregnancy is associated with maternal and child health. However, there are few studies with moderation analysis on maternal dietary patterns and infant birth weight. We aim to analyse the association between dietary patterns during pregnancy and birth weight. Methods: A cohort study was performed with pregnant women in Bahia, Brazil. A food frequency questionnaire was used to evaluate dietary intake. Birth weight was measured by a prenatal service team. Statistical analyses were performed using factor analysis with a principal component extraction technique and structural equation modelling. Results: Four patterns of dietary consumption were identified for each trimester of the pregnancy evaluated. Adherence to the "Meat, Eggs, Fried Snacks and Processed foods” dietary pattern (pattern 1) and the "Sugars and Sweets" dietary pattern (pattern 4) in the third trimester directly reduced birth weight, by 98.42 g (Confidence interval (CI) 95%: 24.26, 172.59) and 92,03g (CI 95%: 39.88, 165.30), respectively. Insufficient dietary consumption in the third trimester increases maternal complications during pregnancy, indirectly reducing birth weight by 145 g (CI 95%: -21.39, -211.45). Conclusion: Inadequate dietary intake in the third trimester appears to have negative results on birth weight, directly and indirectly.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Data On Covariatesmentioning

confidence: 99%

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Association Between Maternal Dietary Pattern and Infant Birth Weight: a Structural Equation Modelling Analysis

Santana

Queiroz

Pereira

et al. 2021

Preprint

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“…The follow-up lasted an average of nine months, including three three-month waves. Details of NISAMI studies can be found in previous studies [ 14 , 15 ].…”

Section: Methodsmentioning

confidence: 99%

Long-Chain Polyunsaturated Fatty Acid Concentrations and Association with Weight Gain in Pregnancy

et al. 2021

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Lower concentrations of omega-3 (ω-3) and higher concentrations of omega-6 (ω-6) have been associated with excess weight in adults; however, the information on this relationship in pregnancy remains in its infancy. This study aimed to investigate the association between plasma levels of ω-3 and ω-6 long-chain polyunsaturated fatty acids (PUFAs) and weight gain during the gestational period. This is a prospective cohort study involving 185 pregnant women registered with the prenatal services of a municipality in the northeast of Brazil. The dosage of the serum concentration of fatty acids and the anthropometric measurements were carried out at the baseline, and the women’s weight information in the first, second, and third trimesters was collected from their pregnancy cards. Serum fatty acids were determined with the help of gas chromatography. The response variable of this study is the latent variable weight gain in pregnancy, derived from three variables: gestational weight in the first, second, and third trimesters. The main exposure was the plasma concentrations of PUFAs. Structural equation modeling was used for the data analysis. The mean age of the pregnant women was 26.74 years old (SD: 5.96 years). Most of the women had not completed high school (84%) and had a low income (70.86%). It was observed that the ω-3 PUFAs, represented by ALA plasm (alpha-linolenic acid), DHA (docosahexaenoic acid), and the EPA/ALA ratio (eicosapentaenoic acid to alpha-linolenic acid ratio), were negatively associated with the weight gain during pregnancy construct (−0.20, −0.12, and −0.14, respectively). Meanwhile, the PUFAs represented by the ratio between the ω-6 category acids ARA and LA (arachidonic acid and linoleic acid) had a direct and positive association (0.22) with that construct. Excess maternal weight gain was associated with ω-3 and ω-6 plasma levels. The women with the greatest gestational weight gain were the ones that presented the highest ARA/LA ratio (ω-6) and the lowest plasma concentrations of ALA, DHA, and EPA/ALA ratio (ω-3).

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“…However, data from the Americas region were derived only from studies in the U.S. and Canada [6]. A recent cohort study in Brazil reported 21% of pregnant women having vitamin D deficiency [7]. In Mexico, one study reported that 37% of women of reproductive age had vitamin D deficiency, and 50% had insufficiency (<30 ng/mL) [8].…”

Section: Introductionmentioning

confidence: 99%

Vitamin D Deficiency in Mexican Pregnant Women: Is Supplementation with ≤400 IU/day Enough?

et al. 2020

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Controversy remains surrounding vitamin D routine supplementation in healthy pregnancy, and the doses are unclear. The aim of this study was to describe maternal vitamin D status throughout pregnancy in a group of Mexican women and evaluate the effect of frequently prescribed doses of vitamin D3 on longitudinal 25-OH-D concentrations, adjusting for obesity, season, and other factors. We conducted a cohort study (Instituto Nacional de Perinatología-INPer) (2017–2020)) of healthy pregnant women without complications. Pregestational overweight/obesity (body mass index ≥ 25), vitamin D3 supplementation (prescribed by physician; 0–250, 250–400, and >400 IU/day), and serum 25-OH-D concentrations (ELISA) were evaluated in each trimester of pregnancy. Vitamin D deficiency or insufficiency was computed (<20 and <30 ng/mL, respectively). We studied 141 adult women; 58.5% had pregestational obesity or overweight. In the first trimester, 45.8% of the women were supplemented with vitamin D3; 51.4% had vitamin D insufficiency and 37.3%, deficiency. In the third trimester, 75.4% of the women were supplemented, and 20% of them still had deficiency. The final general mixed linear model showed that 25-OH-D significantly increased throughout pregnancy (p < 0.001); the highest increase was observed in the third trimester in women with doses >400 IU/day of vitamin D3 (+4 ng/mL, 95% CI: 1.72–8.11 ng/mL). In winter/autumn, 25-OH-D concentrations were also lower (p ≤ 0.05). In this group of pregnant Mexican women, the prevalence of vitamin D deficiency and insufficiency was high. A higher increase in 25-OH-D concentrations during pregnancy was observed when the women were supplemented with >400 IU/day. Common supplementation doses of 250–400 IU/day were insufficient for achieving an adequate maternal vitamin D status.

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Influence of vitamin D serum concentration, prenatal care and social determinants on birth weight: a northeastern Brazilian cohort study

Cited by 11 publications

References 33 publications

Association Between Maternal Dietary Pattern and Infant Birth Weight: a Structural Equation Modelling Analysis

Association Between Maternal Dietary Pattern and Infant Birth Weight: a Structural Equation Modelling Analysis

Long-Chain Polyunsaturated Fatty Acid Concentrations and Association with Weight Gain in Pregnancy

Vitamin D Deficiency in Mexican Pregnant Women: Is Supplementation with ≤400 IU/day Enough?

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