Pregnancy Weight Gain Research Articles

Nondiabetic Fetal Macrosomia: Causes, Outcomes, and Clinical Management.

Fetal macrosomia (FM) is common in clinical practice and carries increased risk of adverse maternal and neonatal health outcomes. Maternal diabetes mellitus (DM) is a well-known cause of macrosomia with significant research and guidelines focusing on macrosomia in this population. Less is known about causes, prevention, and clinical management for suspected FM in individuals without diabetes. The objective of this review is to describe the risk factors associated with nondiabetic FM, review risks associated with macrosomia in pregnancy, and potential treatment considerations for this condition. Original research articles, review articles, and guidelines on macrosomia were reviewed. Risk factors for macrosomia in patients without DM include previous delivery of an infant with macrosomia, excessive pregnancy weight gain, and obesity. Maternal complications of FM include higher rates of cesarean delivery, postpartum hemorrhage, and vaginal laceration. Fetal complications include shoulder dystocia, decreased Apgar scores, and increased risk of childhood obesity. Exercise during pregnancy has been shown to reduce the risk of FM. Induction of labor prior to 39 weeks is not recommended in the setting of suspected macrosomia as there is a lack of adequate evidence to support that this decreases adverse neonatal or maternal outcomes. In addition, elective cesarean delivery for suspected macrosomia is not recommended to be considered unless estimated fetal weight is greater than 5000 g in the absence of DM. Delivery of an infant with macrosomia in patients without DM has increased maternal and fetal risks. Predicting infants who will meet criteria for macrosomia is challenging. More research is needed to identify ways to accurately estimate fetal weight, interventions to prevent macrosomia, and additional ways to mitigate risk in patients without DM who have suspected FM.

Adverse perinatal outcomes related to pregestational obesity or excessive weight gain in pregnancy.

To evaluate outcomes related to pregestational obesity and excessive weight gain during pregnancy. This retrospective cohort was conducted from August to December 2020. Participants were divided into four groups: non-obese with non-excessive weight gain (n=765, 45.9 %), obese with non-excessive weight gain (n=190, 11.4 %), non-obese with excessive weight gain (n=532, 31.9 %), and obese with excessive weight gain (n=179, 10.7 %). The outcomes were evaluated for gestational diabetes (GDM), pregnancy-induced hypertension (PIH), newborn large for gestational age (LGA) and cesarean delivery. A p-value of <0.05 was considered significant. The odds of GDM were significant in groups 2 (CR, 3.6; 95 %CI, 2.5-5.2) and 4 (CR,1.9; 95 %CI, 1.3-2.9). The odds of PIH in groups 3 (CR, 1.7; 95 %CI, 1-2.6) and 4 (CR,3.1; 95 %CI, 1.9-5.2) and those of LGA newborns in groups 2 (CR, 2.0; 95 %CI, 1.2-3.3), 3 (CR, 2.6; 95 %CI, 1.9-3.7), and 4 (CR, 3.2; 95 %CI, 2-5) were high. The odds of GDM were higher in participants with pregestational obesity, while the odds of PIH were higher in participants with excessive weight gain. All groups analyzed, except the reference group, had greater chances of lga newborns. the form of delivery was not affected.

The role of maternal obesity in macrosomia and childhood obesity: a comprehensive review of current evidence and mechanisms

ABSTRACT In recent decades, global rates of overweight and obesity have surged, posing significant health challenges, Maternal obesity is particularly concerning because of its potential adverse effects on women, foetuses, and children. The intrauterine environment plays a crucial role in shaping long-term health outcomes, with maternal factors significantly influencing childhood obesity and related health markers. This review synthesises current evidence on the associations between macrosomia, maternal weight, pregnancy weight gain, and offspring obesity risk. It explores how maternal weight status during pregnancy may impact a child’s susceptibility to obesity later in life, examining potential underlying mechanisms. By consolidating these findings, the review aims to deepen our understanding of the complex relationships between maternal health, prenatal factors, and childhood obesity. This knowledge can inform future research and public health strategies aimed at addressing this global health issue effectively.

The impact of cohort inclusion/exclusion criteria on pregnancy weight gain chart percentiles.

Pregnancy weight gain standards are charts describing percentiles of weight gain among participants with no risk factors that could adversely affect weight gain. This detailed information is burdensome to collect. We investigated the extent to which exclusion of various pre-pregnancy, pregnancy and postpartum factors impacted the values of pregnancy weight gain percentiles. We examined pregnancy weight gain (kg) among 3178 participants of the US nuMoM2b-Heart Health Study (HHS). We identified five groups of potential exclusion criteria for pregnancy weight gain standards: socio-economic characteristics (group 1), maternal morbidities (group 2), lifestyle/behaviour factors (group 3), adverse neonatal outcomes (group 4) and longer-term adverse outcomes (group 5). We established the impact of different exclusion criteria by comparing the median, 25th and 75th percentiles of weight gain in the full cohort with the values after applying each of the five exclusion criteria groups. Differences > 0·75 kg were considered meaningful. Excluding participants with group 1, 2, 3 or 4 exclusion criteria had no impact on the 25th, median or 75th percentiles of pregnancy weight gain. Percentiles were only meaningfully different after excluding participants in group 5 (longer-term adverse outcomes), which shifted the upper end of the weight gain distribution to lower values (e.g. 75th percentile decreased from 19·6 kg to 17·8 kg). This shift was due to exclusion of participants with excess postpartum weight retention > 5 kg or > 10 kg. Except for excess postpartum weight retention, most potential exclusion criteria for pregnancy weight gain standards did not meaningfully impact chart percentiles.

Weight gain in pregnancy and impact of obesity on the obstetric outcome: A retrospective study in a secondary care hospital in South India

ABSTRACT Objective: To evaluate the patterns of weight gain in pregnancy and the outcomes of pregnancy in overweight and obese mothers. Materials and Methods: A retrospective cohort study was performed on 1,352 mothers between October 2020 and August 2021. All pregnant women who presented for antenatal checkups from 20 weeks or earlier, with a singleton pregnancy, were included in the study. Details such as comorbidities, total duration of labor, complications during labor, and neonatal complications were included. Results: At the first antenatal visit, 16% of mothers were underweight, 51% of mothers were normal weight, and 33% of mothers were overweight or obese. Women with poor weight gain were two times more prone to give birth to a child with low birth weight than those with adequate weight gain. Excess weight gain in pregnancy in women with a normal body mass index (BMI) had an association with the development of pre-eclampsia. The odds of overweight/obese pregnant women developing gestational diabetes mellitus (GDM) were 2.1 times higher than in pregnant women with normal BMI. The odds of pregnant overweight/obese women undergoing cesarean section were 1.6 times higher than in pregnant women with normal BMI. Conclusion: Overweight/obese pregnant women had increased odds of developing GDM and undergoing a cesarean section. Excess weight gain was also seen in overweight/obese women. It is therefore important for physicians to educate women on acceptable weight gain during their pregnancy.

Is it possible to detect women at higher risk of intrapartum stillbirth? An area-based prospective cohort study.

The aim of the study is to perform an overview of intrapartum stillbirth (SB) at term, assessing risk factors, causes of death and quality of pregnancy care. This is an area-based, prospective cohort study on pregnant women at ≥37 weeks from 2014 to 2021. We compared intrapartum SB' information to alive birth and to antepartum deaths of the same period. Results of logistic regression are reported as the Odds Ratio (OR) with 95% confidence interval (95% CI) and the P value. A descriptive analysis about the causes of death and quality of pregnancy care is performed. The overall rate of SB at term in Emilia-Romagna was 1.06 ‰ births. Among the 260 cases, 27 (10.4%) occurred during labor, with an intrapartum SB rate of 0.11‰. This SB rate was stable during years. SGA newborn (P=0.005, 95% CI 1.47-9.04, OR 3.63), low level of education (P<0.0001, 95% CI 2.98-16.11, OR 6.93), pre pregnancy BMI ≥ 25 kg/m2 (P<0.0001, 95% CI 6.61-31.74, OR 14.50) are independent risk factors for intrapartum SB when compared to alive newborns. Compared with antepartum SB, excessive weight gain in pregnancy (RR 2.91, 1.43-3.98, P=0.001) represents a risk factor for intrapartum ones. Preventing intrapartum SB at term in developed country should be based on both the appropriate antenatal management of fetal growth and the avoidance of maternal excessive weight gain. An effort toward pre conceptional intervention of improving maternal shape could be of value.

Interpregnancy maternal weight change is not associated with offspring weight and obesity at age 2 years.

Weight retention between pregnancies is associated with increased risk of perinatal complications, but it is unclear whether there is an association with offspring weight status. This study aimed to determine whether maternal interpregnancy weight change is associated with offspring overweight/obesity, controlling for confounding variables. Routinely collected linked data from perinatal and child datasets, in Flanders, Belgium were used. Women having their first and second live births between 2009-2018 were included. The association between maternal interpregnancy weight change and overweight/obesity in the second child at 2 years was examined by logistical regression models. A total of 33,172 women were included. 52.7% (n = 17478) had a stable interpregnancy BMI, 24.1% (n = 8024) and 8.5% (n = 2821) had moderate and substantial BMI increases respectively. At 2 years, 91.6% (n = 30383) of the second offspring had a healthy weight, 0.6% (n = 210), 7.0% (n = 2312) and 0.8% (n = 267) were in the underweight, overweight and obesity BMI categories respectively. Multivariate analysis showed no statistical evidence that maternal interpregnancy BMI change is independently associated with overweight/obesity in the second child. The strongest independent factors were the first child (sibling) being in the obesity category at 2 years (odds ratio [OR] 7.2, [95% CI, 5.49-9.45] and being born Large for Gestational Age (LGA) (2.13 [1.92-2.37]). The following variables were also independently associated with the outcome measure: maternal African origin (1.90 [1.59-2.26]), maternal obesity at start of first pregnancy (1.33 [1.16-1.53]), excessive gestational weight gain in the second pregnancy (1.15 [1.04-1.28]), being born after a < 1-year interpregnancy time interval (1.17 [1.05-1.30]) and not being exclusively breastfed at 12 weeks old (1.29 [1.10-1.52]). Sibling obesity and being born LGA were most strongly independently associated with overweight/obesity at 2 years. This supports the need for family interventions and to address risk factors for development of LGA infants. There was no independent association with interpregnancy weight gain, contrary to what was hypothesised.

Seeking the optimal gestational weight gain according to the pre-pregnancy body mass index: a cross-sectional study from Shanghai, China.

Maternal nutritional status is closely related to fetal intrauterine development and an abnormal birth weight increases various disease risks across life stages. To better guide pregnancy weight gain, we aimed to explore the optimal weight gain for pregnant women with different body mass indexes (BMIs). This retrospective cohort study included 68,981 women with singleton live birth between January 2017 and October 2021 in maternity centres in Shanghai, China. The fluctuations of the incidence of small and large for gestational age (small for gestational age (SGA) and LGA, respectively) were recorded at different maternal pre-pregnancy BMI (p-BMI) and different gestational weight gain (GWG) groups to find the lowest point of abnormal fetal weight incidence. The optimal GWG was then determined using a linear regression equation. The lowest risk of LGA/SGA was associated with a maternal p-BMI of 19.46 kg/m2. For pregnant women with maternal p-BMI below 24 kg/m2, we confirmed an optimal GWG linear equation: opt GWG (kg) = -1.94 × p-BMI (kg/m²) + 51, which showed an excellent degree of fit. Women who were overweight and obese could not achieve the lowest risk of LGA/SGA despite controlling their GWG; hence, their BMI should be normalized before pregnancy. By merely using the pre-pregnancy BMI, this study has established the optimal GWG equation, with the goal of achieving the appropriate fetal gestational age. It is a practical measure to ensure desirable pregnancy outcomes and meet the health economics requirements.

Associations of maternal lifestyle factors with inadequate pregnancy weight gain: findings from the baseline data of the LIMIT prospective cohort study.

Gestational Weight Gain (GWG) impacts maternal and fetal health; deviations from optimal ranges pose health risks. Maternal lifestyle before and during pregnancy strongly influences GWG. This study explores factors linked to inadequate GWG, focusing on Mediterranean Diet (MD) adherence and specific food consumption. 178 pregnant women were enrolled at Fondazione IRCCS Policlinico San Matteo (Pavia) during pre-hospital care before birth meeting inclusion/exclusion criteria. Sociodemographic data, pre-pregnancy BMI, GWG, MD adherence, physical activity (PA) levels, and smoking habits were retrospectively collected. Validated questionnaires adapted for the target group, assessed MD adherence and PA level. Participants were classified into adequate (AGWG) and inadequate GWG groups following IOM guidelines. Among 200 pregnant women (aged 30-36), 37.1% experienced low GWG and 24.1% excessive GWG. Our study revealed a significant association between inadequate GWG and educational level (P = 0.011); pre-pregnancy BMI (P = 0.005); MD adherence (P = 0.008), and daily average consumption of vegetables (P < 0.001). Our results also showed that a lower risk of EGWG vs. AGWG was associated with daily average consumption of vegetables (RRR = 0.279, P = 0.004), while a higher risk of EGWG vs. AGWG was associated with high daily meat product consumption (> 1.5 portions/day) (RRR = 7.83, P = 0.03). These findings emphasize the importance of promoting lifestyle changes before and during pregnancy to tackle the increasing incidence of inadequate GWG and improve the health outcomes of both mother and child.

Effects of maternal exposure to biomass cooking fuel on birth size and body proportionality in full-term infants born by vaginal delivery

It remains unclear whether and how maternal exposure to biomass fuel influences infant anthropometry or body proportionality at birth, which are linked to their survival, physical growth, and neurodevelopment. Therefore, this study seeks to explore the association between household-level exposure to biomass cooking fuels and infant size and body proportionality at birth among women in rural Bangladesh. A total of 909 women were derived from the Pregnancy Weight Gain study, which was conducted in Matlab, a rural area of Bangladesh. Infant’s weight (g), length (cm), head circumference (cm), small for gestational age (SGAW), short for gestational age (SGAL), low head circumference for gestational age (SGAHC), ponderal index, and cephalization index at birth were the outcomes studied. Of the women, 721 (79.3%) were dependent on biomass fuel. Compared to infants born to mothers who used gas for cooking, those born to biomass users had lower weight (β − 94.3, CI − 155.9, − 32.6), length (β − 0.36, 95% CI − 0.68, − 0.04), head circumference (β − 0.24, CI − 0.47, − 0.02) and higher cephalization index (β 0.03, CI 0.01, 0.05) at birth. Maternal biomass exposure is more likely to lead to symmetric SGA, although there is evidence for some brain-sparing effects.

Gestational Weight Gain Following Metabolic Bariatric Surgery: A Scoping Review.

Metabolic bariatric surgery remains the most effective and durable treatment for severe obesity. Women of reproductive age represent the largest demographic group undergoing these procedures. Metabolic bariatric surgery can have both beneficial and adverse effects on pregnancy outcomes. One of the most common adverse effects is fetal growth restriction. To mitigate these adverse effects, it is crucial to explore lifestyle modifications aimed at promoting a healthy pregnancy. Modifiable factors during pregnancy after metabolic bariatric surgery include the amount of gestational weight gain. The aim of this comprehensive review is to provide an overview of what is known about gestational weight gain in pregnancy after bariatric metabolic surgery. This review is focused on the two most performed procedures: sleeve gastrectomy and Roux-en-Y gastric bypass.

Postnatal Cardiometabolic Health After Metformin Use in Gestational Diabetes: A Secondary Analysis of the EMERGE Trial.

Women with GDM display adverse lifetime cardio-metabolic health. We examined whether early metformin in GDM could impact cardio-metabolic risk factors postpartum. EMERGE, a double-blind, placebo-controlled trial randomized pregnancies 1:1 to placebo or metformin at GDM diagnosis and followed participants from randomization until 12±4 weeks postpartum. In total 478 pregnancies were available for postpartum maternal assessment, 237 and 241 assigned to metformin and placebo respectively. Weight (kg), body mass index (BMI) (kg/m2), waist circumference (cm) and blood pressure (mmHg) were measured, infant feeding method documented and bloods drawn for a 75 gram oral glucose tolerance test, fasting insulin, C peptide and lipid analysis. Despite similar weight and BMI at trial randomization, participants receiving metformin had significantly lower weight (79.5±15.9 vs 82.6±16.9kg; p=0.04) and BMI (29.3(5.6) vs 30.5(5.4); p=0.018) at the postpartum visit. However no difference in weight change from randomisation to 12 weeks postpartum was observed between metformin and placebo groups. Overall 29% (n=139) of the cohort met criteria for prediabetes or diabetes, with no positive impact with metformin. There were also no differences in measurements of insulin resistance, blood pressure or lipids between groups. Early metformin use in GDM did not impact important cardio-metabolic parameters in the early postpartum period despite significant benefits in weight gain and insulin use in pregnancy.

Clozapine Safety in Pregnancy: A Clinical Study.

Pregnant women with persistent schizophrenia and related disorders may require ongoing antipsychotic treatment, including clozapine. However, the potential risks of using clozapine during pregnancy and the postnatal period remain uncertain. We conducted a nested case-control study using the National Register of Antipsychotic Medication in Pregnancy (NRAMP) database. Our study assessed pregnancy outcomes among Australian women diagnosed with schizophrenia spectrum disorder and treated with clozapine (n = 14) during the first trimester. These women were compared to 2 subgroups: those treated with quetiapine (n = 53) and those not taking any medication (n = 24) during pregnancy. We observed higher rates of miscarriage in the clozapine group compared to the quetiapine and drug-free groups. The clozapine group had a higher early pregnancy body mass index but lower overall pregnancy weight gain than the other groups. The prevalence of gestational diabetes was significantly higher in the clozapine group. The percentage of vaginal delivery was higher in the clozapine group than in the other 2 groups. Neonatal outcomes such as gestational age, and Apgar scores were similar across groups. The birth weight was lower in the clozapine group compared to the other 2 groups. This study suggests that pregnant women taking clozapine and their babies have greater adverse outcomes compared to other groups. Clozapine appears to be associated with a greater risk of miscarriages, maternal gestational diabetes, and lower birth weight. However, the gestational age, Apgar scores, and admission to NICU/SCN were comparable between all groups.

Maternal Weight Gain in Early Pregnancy with Healthy Live Offspring: Based on the China Birth Cohort Study.

Research on maternal weight gain in early pregnancy with healthy live offspring is lacking for Chinese women. Based on the China birth cohort study (CBCS), we aimed to explore maternal weight gain in different groups. Singleton pregnancies of 6 + 0~13 + 6 weeks of gestation from the CBCS were considered, not including missing data or outliers, those lost at follow-up, or those with non-typical conditions of the offspring. Maternal first-trimester weight and body mass index (BMI) gain was considered as the early pregnancy weight minus the pre-pregnancy weight. Using Pearson's or Spearman's correlation and linear regression models to explore the relationship between maternal weight and BMI gain and gestational age (GA), stratified and sensitivity analyses were carried out to identify the study's robustness. There were 25,292 singleton pregnancies with healthy live offspring who were ultimately enrolled, and there was a linear correlation between GA and maternal weight gain (=0.55 + 0.05 × GA (weeks), p < 0.001, r2 = 0.002) and BMI change (=0.21 + 0.02 × GA (weeks), p < 0.001, r2 = 0.002). The association remained robust in the stratified and sensitivity analyses of the subgroups. Although the association between GA and maternal pre-pregnancy weight and BMI gain is weak, a slight correlation was shown, especially in pregnant women with a typical or low pre-pregnancy BMI, Han ethnicity, moderate levels of physical activity, natural conception, and folic acid (FA) and/or multivitamin supplementation.

Association of maternal body mass index and gestational weight gain rate with cardiometabolic traits in childhood: A prospective cohort study

Background and aimsEvidence on the association of maternal obesity with offspring cardiometabolic health is limited, particularly for the Asian population. We aimed to examine the associations of maternal body mass index (BMI) in early pregnancy and gestational weight gain (GWG) rate in mid- and late-pregnancy with childhood cardiometabolic traits. Methods and resultsWe used data of 1452 mother-child pairs from a population-based prospective cohort study in China. Maternal BMI in early pregnancy and GWG rate in mid- and late-pregnancy were calculated. Childhood cardiometabolic traits were assessed at aged 4–7 years, including BMI, BMI-z, systolic blood pressure (SBP), diastolic blood pressure, high-density lipoprotein-cholesterol, low-density lipoprotein-cholesterol, total cholesterol, triglycerides, fasting glucose, and C-reactive protein. Each 1 kg/m2 increase in maternal BMI in early pregnancy was associated with 0.46% (95% confidence interval, 0.19%–0.72%) higher children BMI, 0.05 (0.02–0.08) higher BMI-z, 0.41% (0.22%–0.59%) higher waist circumference, and 0.24% (0.03%–0.46%) higher SBP. Each 1 kg/week higher GWG rate in mid- and late-pregnancy was associated with higher children SBP (4.58% [1.46%–7.71%]), triglycerides (18.28% [3.13%–33.44%]), and fasting glucose (5.83% [2.64%–9.02%]) and lower BMI-z (−0.45 [−0.82 to −0.08]). Additional adjustment for offspring BMI attenuated the associations for maternal BMI but not for GWG rate. ConclusionsThe increase in maternal BMI and GWG are associated with adverse cardiometabolic profiles in childhood. The association between maternal BMI and childhood cardiometabolic traits is likely mediated using the offspring BMI.

Gestational weight gain below recommendations and adverse maternal and child health outcomes for pregnancies with overweight or obesity: a United States cohort study

BackgroundThe current Institute of Medicine (IOM) pregnancy weight gain guidelines were developed using the best available evidence but were limited by substantial knowledge gaps. Some have raised concern that the guidelines for individuals affected by overweight or obesity are too high and contribute to short- and long-term complications for the mother and child. ObjectivesTo determine the association between pregnancy weight gain below the lower limit of the current IOM recommendations and risk of 10 adverse maternal and child health outcomes among individuals with overweight and obesity. MethodsWe used data from a prospective cohort study of United States nulliparae with prepregnancy overweight (n = 955) or obesity (n = 897) followed from the first trimester to 2–7 y postpartum. We used multivariable Poisson regression to relate pregnancy weight gain z-scores with a severity-weighted composite outcome consisting of ≥1 of 10 adverse outcomes (gestational diabetes, preeclampsia, unplanned cesarean delivery, maternal postpartum weight increase >10 kg, maternal postpartum metabolic syndrome, infant death, stillbirth, preterm birth, small-for-gestational age birth, and childhood obesity). ResultsPregnancy weight gain z-scores below, within, and above the IOM-recommended ranges occurred in 5%, 13%, and 80% of pregnancies with overweight and 17%, 13%, and 70% of pregnancies with obesity. There was a positive association between pregnancy weight gain z-scores and all adverse maternal outcomes, childhood obesity, and the composite outcome. Pregnancy weight gain z-scores below the lower limit of the recommended ranges (<6.8 kg for overweight, <5 kg for obesity) were not associated with the severity-weighted composite outcome. For example, compared with the lower limit, adjusted rate ratios (95% confidence interval) for z-scores of −2 standard deviations in pregnancies with overweight (equivalent to 3.6 kg at 40 wk) and obesity (−2.8 kg at 40 wk) were 0.99 (95% confidence interval [CI]: 0.91, 1.06) and 0.97 (95% CI: 0.87, 1.07). ConclusionsThese findings support arguments to decrease the lower limit of recommended weight gain ranges in these prepregnancy body mass index groups.

Effect of perinatal consumption of low-calorie sweetener on maternal health: A systematic review and meta-analysis

Background and AimsEvidence regarding perinatal low-calorie (or artificial) sweetener (LCS) consumption and its effect on maternal health outcomes is limited and inconclusive. The primary outcomes of our systematic review and meta-analysis were the effect of preconception and pregnancy LCS exposure on reproductive and pregnancy outcomes. Secondary outcomes included long-term maternal health . MethodsA systematic search of electronic databases, including PubMed, Embase, CINAHL, the Cochrane Library, Scopus, Web of Science, PsycINFO, ProQuest Health and Medical, ClinicalTrials.gov and Google Scholar, was conducted up to 20 November 2023. Primary studies, including interventional studies, cohort studies, case-control studies, which reported any LCS consumption during perinatal period and pregnancy and maternal health outcomes were eligible. A random effects model with restricted maximum likelihood estimation was used for the meta-analysis. We appraised the quality of the included studies using the National Institute of Health study quality appraisal tool and the overall quality of evidence using the Grading of Recommendations Assessment, Development, and Evaluation tool. ResultsA total of 19 eligible studies with 203,706 participants were included. LCS consumption during pregnancy was associated with 11% increased risk of preterm birth (RR = 1.11, 95% CI: 1.07-1.16, I2 = 0.01%) and 42% increased risk of gestational diabetes (RR = 1.42, 95% CI: 0.98-2.04, I2 = 67.60%) compared with no consumption, however, the effect size for gestational diabetes was not precise as the 95% CI indicated that the effect estimate could range from 2% lower risk to 204% (or 2.04 times) higher risk. We found no association between LCS consumption during pregnancy and gestational weight gain (standardized mean difference (SMD) = 0.04; 95% CI: -0.17 - 0.24, I2 = 41.31%) or gestational age at birth (SMD = 0.00; 95% CI: -0.13 – 0.14, I2 = 80.13%). The effect of LCS consumption on reproductive treatment outcomes were inconsistent. ConclusionsBased on the evidence available, LCS consumption in pregnancy was associated with increased risk of preterm birth and gestational diabetes. Robust research, such as well-designed randomized trials and large prospective cohort studies, is required to confirm the causal effect of LCS consumption during perinatal period on adverse maternal health outcomes.

Prevalence of hyperuricemia and associated factors among pregnant women in Vietnam: A cross-sectional study

PurposeHyperuricemia is a significant health concern worldwide. It is important to identify pregnant women who may be at risk to enhance pregnancy care. This study aims to investigate the prevalence of hyperuricemia and identify some factors associated with hyperuricemia among Vietnamese pregnant women. MethodsIn this cross-sectional study, 340 pregnant women were enrolled from May 2021 to December 2021. Demographic information, anthropometric data, and food frequency consumption (within 1 month before delivery) were collected from the participants. In addition, the biochemical indices of the participants were collected from medical records. Multivariate logistic regression was deployed to identify associated factors (p < 0.05). ResultsThe prevalence of hyperuricemia was estimated at 20.3 %. Factors associated with hyperuricemia risk among Vietnamese pregnant women include eating red meat (aOR: 2.3), eating animal organs (aOR: 2.5), not meeting vegetable recommendations (aOR: 6.7), hyper-total cholesterol (aOR: 2.4), disease during pregnancy (aOR: 3.5) and gestational weight gain below recommendations (aOR: 0.2). ConclusionsThe prevalence of hyperuricemia among pregnant women was relatively high at the National Hospital of Obstetrics and Gynecology, Hanoi, Vietnam. Consuming red meat and animal organs, not meeting vegetable recommendations, having high total cholesterol, and experiencing pregnancy-related diseases are the major factors associated with higher rates of hyperuricemia in this study.

Maternal Hypertriglyceridemia in Gestational Diabetes: A New Risk Factor?

Elevated maternal triglycerides (TGs) have been associated with excessive fetal growth. However, the role of maternal lipid profile is less studied in gestational diabetes mellitus (GDM). We aimed to study the association between maternal lipid profile in the third trimester and the risk for large-for-gestational-age (LGA) newborns in women with GDM. We performed an observational and retrospective study of pregnant women with GDM who underwent a lipid profile measurement during the third trimester. We applied a logistic regression model to assess predictors of LGA. A total of 100 singleton pregnant women with GDM and third-trimester lipid profile evaluation were included. In the multivariate analysis, pre-pregnancy BMI (OR 1.19 (95% CI 1.03-1.38), p = 0.022) and hypertriglyceridemia (OR 7.60 (1.70-34.10), p = 0.008) were independently associated with LGA. Third-trimester hypertriglyceridemia was found to be a predictor of LGA among women with GDM, independently of glycemic control, BMI, and pregnancy weight gain. Further investigation is needed to confirm the role of TGs in excessive fetal growth in GDM pregnancies.

Vaporized nicotine in utero results in reduced birthweight, increased locomotion, and decreased voluntary exercise, dependent on sex and diet in offspring.

Rationale Clinical research has shown that prenatal exposure to nicotine may result in increased obesity risk later in life. Preclinical research has corroborated this finding, but few studies have investigated inhaled nicotine or the interaction with diet on obesity risk. Objective The aim of this study was to investigate the effects of prenatal nicotine exposure on both direct and indirect obesity measures, with both sex and diet as factors. Methods Pregnant rats were exposed to either vehicle or nicotine vapor (24mg/mL or 59mg/mL) throughout the entire gestational period. Offspring from each treatment group were given either a normal diet or a high fat diet starting at postnatal day 22. Caloric intake, body weight, spontaneous locomotion, sleep/wake activity, and voluntary exercise were measured throughout adolescence. Pregnancy weight gain and pup birthweights were collected to further measure developmental effects of prenatal nicotine exposure. Results Both maternal weight gain during pregnancy and pup weight at birth were decreased with prenatal nicotine exposure. Early adolescent males showed increased spontaneous activity in the open field following prenatal nicotine exposure compared to vehicle counterparts, particularly those given high-fat diet. Additionally, high dose nicotine prenatal treated males ran significantly less distance on the running wheel in late adolescence compared to vehicle counterparts, in the normal diet group only. Conclusion The results presented here show decreased birthweight, hyperactivity, and decreased voluntary exercise in adolescence following prenatal nicotine exposure in dose, sex, and diet dependent manners, which could lead to increased obesity risk in adulthood.