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1.
Sci Rep ; 14(1): 9980, 2024 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-38693315

RESUMO

Iron deficiency anemia is a public health problem among adolescents that could be addressed by weekly Iron Folic Acid Supplementation (IFAS). The Ethiopian government piloted weekly IFAS in schools, where its effectiveness depends on compliance. We assessed the determinants of compliance with the weekly IFAS in Ethiopia. A school-based survey was conducted in 506 adolescent girls on weekly IFAS. Compliance was considered when girls reported WIFAS for at least three months without discontinuation. Bivariable and multivariable logistic regression models were modeled, with odds ratios reported. Out of 506, 25.8% had limited access to educational resources, and 79.4% had no information on IFAS. Among these, 47.9% (95% CI: 45.5-49.9%) had poor compliance with weekly IFAS. Non-compliance was mainly due to school absenteeism (55.9%). Important predictors of poor compliance were adolescent girls' marital status (AOR = 5.21; 1.55-17.6), academic standing (AOR = 4.37; 2.20-8.70), family income (AOR = 1.85; 1.09-3.15), access to health education materials (AOR = 1.57; 1.02-2.40), problems with IFAS (AOR = 2.44; 1.26-4.74), a discouraging home environment for the program (AOR = 2.27; 1.54-3.34), and a lack of knowledge of the IFAS program (AOR = 1.40; 0.97-2.03). Compliance with weekly IFAS is optimal, which could be improved via strong adherence support and feasible supplementation schedules.


Assuntos
Suplementos Nutricionais , Ácido Fólico , Ferro , Humanos , Feminino , Adolescente , Ácido Fólico/administração & dosagem , Etiópia , Estudos Transversais , Ferro/administração & dosagem , Anemia Ferropriva/prevenção & controle , Anemia Ferropriva/epidemiologia , Instituições Acadêmicas , Cooperação do Paciente/estatística & dados numéricos
2.
Nutrients ; 16(9)2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38732532

RESUMO

Anemia in breastfeeding women is a neglected global health issue with significant implications for maternal and child health. Despite its widespread occurrence and adverse effects, this problem remains largely unknown and overlooked on the global health agenda. Despite efforts to improve health access coverage and provide iron and folic acid supplementation, anemia persists. This underscores the need for a comprehensive approach to address the problem. Urgent action must be taken to prioritize education and awareness campaigns, ensure access to nutritious food, and enhance healthcare services. Education programs should focus on promoting iron-rich diets, dispelling cultural myths, and providing practical guidance. Improving healthcare services requires increasing availability, ensuring a consistent supply of iron supplements, and providing adequate training for healthcare providers. A successful implementation relies on a strong collaboration between the government, healthcare providers, and community. It is crucial that we acknowledge that high coverage alone is insufficient for solving the issue, emphasizing the importance of targeted interventions and a strategic implementation. By adopting a comprehensive approach and addressing the underlying causes of anemia, Indonesia can make significant progress in reducing its prevalence and improving the overall health of its population, particularly among breastfeeding women.


Assuntos
Aleitamento Materno , Suplementos Nutricionais , Humanos , Indonésia/epidemiologia , Feminino , Anemia/epidemiologia , Anemia/prevenção & controle , Anemia Ferropriva/epidemiologia , Anemia Ferropriva/prevenção & controle , Lactente , Saúde da Criança , Ferro/administração & dosagem , Ácido Fólico/administração & dosagem
3.
Nutrients ; 16(9)2024 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-38732559

RESUMO

(1) Background: Fortifying maize and wheat flours with folic acid has effectively reduced neural tube defect-affected births. However, maize and wheat flours may not be widely consumed in all countries; further reduction in neural tube defect-affected births could benefit from the identification of alternative food vehicles. We aimed to use dietary intake or apparent consumption data to determine alternative food vehicles for large-scale fortification with folic acid in low-income and lower-middle-income countries (LILMICs) and identify current research related to examining the technological feasibility of fortifying alternative foods with folic acid. (2) Methods: We identified 81 LILMICs, defined by the World Bank's (WB) 2018 income classifications. To identify dietary intake or apparent consumption, we reviewed WB's Microdata Library and Global Health Data Exchange for national surveys from 1997-2018. We reviewed survey reports for dietary intake or apparent consumption data and analyzed survey datasets for population coverage of foods. We defined alternative food vehicles as those that may cover/be consumed by ≥30% of the population or households; cereal grains (maize and wheat flours and rice) were included as an alternative food vehicle if a country did not have existing mandatory fortification legislation. To identify current research on fortification with folic acid in foods other than cereal grains, we conducted a systematic review of published literature and unpublished theses, and screened for foods or food products. (3) Results: We extracted or analyzed data from 18 national surveys and countries. The alternative foods most represented in the surveys were oil (n = 16), sugar (n = 16), and salt (n = 14). The coverage of oil ranged from 33.2 to 95.7%, sugar from 32.2 to 98.4%, and salt from 49.8 to 99.9%. We found 34 eligible studies describing research on alternative foods. The most studied alternative foods for fortification with folic acid were dairy products (n = 10), salt (n = 6), and various fruit juices (n = 5). (4) Conclusions: Because of their high coverage, oil, sugar, and salt emerge as potential alternative foods for large-scale fortification with folic acid. However, except for salt, there are limited or no studies examining the technological feasibility of fortifying these foods with folic acid.


Assuntos
Grão Comestível , Ácido Fólico , Alimentos Fortificados , Defeitos do Tubo Neural , Triticum , Ácido Fólico/administração & dosagem , Humanos , Defeitos do Tubo Neural/prevenção & controle , Triticum/química , Grão Comestível/química , Farinha/análise , Zea mays/química , Países em Desenvolvimento
4.
Signal Transduct Target Ther ; 9(1): 110, 2024 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-38724491

RESUMO

Previous studies have shown that low platelet count combined with high plasma total homocysteine (tHcy) increased stroke risk and can be lowered by 73% with folic acid. However, the combined role of other platelet activation parameters and the methylenetetrahydrofolate reductase (MTHFR) C677T genotypes on stroke risk and folic acid treatment benefit remain to be examined. This study aimed to investigate if platelet activation parameters and MTHFR genotypes jointly impact folic acid treatment efficacy in first stroke prevention. Data were derived from the China Stroke Primary Prevention Trial. This study includes a total of 11,185 adult hypertensive patients with relevant platelet activation parameters and MTHFR genotype data. When simultaneously considering both platelet activation parameters (plateletcrit, platelet count, mean platelet volume, platelet distribution width) and MTHFR genotypes, patients with both low plateletcrit (Q1) and the TT genotype had the highest stroke incidence rate (5.6%) in the enalapril group. This subgroup significantly benefited from folic acid treatment, with a 66% reduction in first stroke (HR: 0.34; 95% CI: 0.14-0.82; p = 0.016). Consistently, the subgroup with low plateletcrit (Q1) and the CC/CT genotype also benefited from folic acid treatment (HR: 0.40; 95% CI: 0.23-0.70; p = 0.001). In Chinese hypertensive adults, low plateletcrit can identify those who may greatly benefit from folic acid treatment, in particular, those with the TT genotype, a subpopulation known to have the highest stroke risk.


Assuntos
Ácido Fólico , Genótipo , Metilenotetra-Hidrofolato Redutase (NADPH2) , Acidente Vascular Cerebral , Humanos , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Ácido Fólico/administração & dosagem , Ácido Fólico/genética , Acidente Vascular Cerebral/genética , Acidente Vascular Cerebral/prevenção & controle , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Hipertensão/genética , Ativação Plaquetária/genética , Ativação Plaquetária/efeitos dos fármacos , China/epidemiologia , Plaquetas/metabolismo , Plaquetas/efeitos dos fármacos , Contagem de Plaquetas , Adulto
5.
Medicine (Baltimore) ; 103(19): e38154, 2024 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-38728462

RESUMO

Folic acid is the synthetic form of vitamin B9, found in supplements and fortified foods, while folate occurs naturally in foods. Folic acid and its derivatives are extremely important in the synthesis of nucleic acids (DNA and ribose nucleic acid [RNA]) and different proteins. It acts as a coenzyme for the transfer of 1 carbon in the biosynthesis of purine, pyrimidine, and amino acids. Folic acid is critically important in rapidly proliferating tissues, including fetus and trophoblastic tissue to prevent neural tube defect (NTD). The main objective of this review is to identify the role of folic acid to prevent NTD among pregnancy mothers. Electronic databases including Web of Science, Google Scholar, MEDLINE, Scopus, and Cochrane library used to systematically search without limitation of publication date and status. In pregnancy, the first trimester is a significant time for neural tube closure. Decreased blood folic acid levels inhibit DNA replication, repair, RNA synthesis, histone and DNA methylation, methionine production, and homocysteine remethylation reactions that cause NTDs in pregnancy. Therefore, folic acid supplementation is critically important for childbearing mothers before conception and in the first trimester pregnancy. As a result, women are recommended to take 400 microgram FA/day from preconception until the end of the first trimester to prevent NTD-affected pregnancies. This allows the developing neural tissue to acquire critical mass and provides the preferred rostrocaudal orientation so that these divisions contribute to the elongation of the developing neural tube in embryos.


Assuntos
Suplementos Nutricionais , Ácido Fólico , Defeitos do Tubo Neural , Feminino , Humanos , Gravidez , Ácido Fólico/administração & dosagem , Defeitos do Tubo Neural/prevenção & controle , Complexo Vitamínico B/uso terapêutico
6.
Medicina (Kaunas) ; 60(4)2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38674281

RESUMO

The increasing prevalence of bariatric surgery among women of childbearing age raises critical questions about the correct management of pregnancy following these procedures. This literature review delves into the multifaceted considerations surrounding pregnancy after bariatric surgery, with a particular focus on the importance of preconception counselling, appropriate nutrition assessment, and the necessity of correct folic acid supplementation. Key areas of investigation include nutrient absorption challenges, weight gain during pregnancy, and potential micronutrient deficiencies. Examining the relationship between bariatric surgery and birth defects, particularly heart and musculoskeletal issues, uncovers a twofold increase in risk for women who underwent surgery before pregnancy, with the risk emphasized before folic acid fortification. In contrast, a nationwide study suggests that infants born to mothers with bariatric surgery exhibit a reduced risk of major birth defects, potentially associated with improved glucose metabolism. In addition, this review outlines strategies for managing gestational diabetes and other pregnancy-related complications in individuals with a history of bariatric surgery. By synthesizing existing literature, this paper aims to provide healthcare providers with a comprehensive framework for the correct management of pregnancy in this unique patient population, promoting the health and well-being of both mother and child.


Assuntos
Cirurgia Bariátrica , Obesidade , Complicações na Gravidez , Adulto , Feminino , Humanos , Gravidez , Cirurgia Bariátrica/efeitos adversos , Cirurgia Bariátrica/métodos , Diabetes Gestacional , Ácido Fólico/administração & dosagem , Ácido Fólico/uso terapêutico , Complicações na Gravidez/prevenção & controle , Complicações na Gravidez/etiologia , Redução de Peso , Obesidade/cirurgia , Obesidade/terapia
7.
Nutr Diabetes ; 14(1): 22, 2024 Apr 22.
Artigo em Inglês | MEDLINE | ID: mdl-38649347

RESUMO

BACKGROUND: The beneficial effects of folate have been observed under different conditions, but the available evidence on inflammation and reduction of cardiovascular disease (CVD) in type 2 diabetes mellitus (T2DM) is limited. The study aimed to explore the effects of folate on inflammation and homocysteine amongst individuals with T2DM. METHODS: PubMed, Scopus, and Cochrane Library were used to search for evidence. A random-effect model meta-analysis through Review Manager (version 5.4) and metaHun was performed. Results were reported as standardized mean differences (SMD) and 95% confidence intervals graphically using forest and funnel plots. RESULTS: Data from 9 trials with 426 patients living with T2DM were analyzed. Folic acid supplementation significantly revealed a large effect size on homocysteine levels compared to placebo, SMD = -1.53, 95%CI (-2.14,-0.93), p < 0.05. Additionally, we observed a medium marginal effect size on C-reactive protein (SMD = -0.68, 95%CI (-1.34, -0.01), p = 0.05). However, no significant effect on tumor necrosis factor-α (SMD = -0.86, 95%CI (-2.65, 0.93), p = 0.34), and interleukin-6 (SMD = -0.04, 95%CI (-1.08, 1.01), p = 0.95) was observed. CONCLUSION: Evidence analyzed in this study suggests that folic acid supplementation in T2DM reduces homocysteine and may mitigate CVDs. However, its effect on inflammation is inconclusive.


Assuntos
Proteína C-Reativa , Diabetes Mellitus Tipo 2 , Suplementos Nutricionais , Ácido Fólico , Homocisteína , Inflamação , Ensaios Clínicos Controlados Aleatórios como Assunto , Humanos , Proteína C-Reativa/análise , Proteína C-Reativa/metabolismo , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/tratamento farmacológico , Ácido Fólico/uso terapêutico , Ácido Fólico/administração & dosagem , Homocisteína/sangue , Inflamação/sangue , Inflamação/tratamento farmacológico , Interleucina-6/sangue , Fator de Necrose Tumoral alfa/sangue
8.
PLoS One ; 19(4): e0302500, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38662670

RESUMO

Metformin is a cornerstone medication in the management of type 2 diabetes. Metformin is safe, effective, and inexpensive; however, it is associated with vitamin B12 deficiency. This study set out to evaluate the rate of vitamin B12 deficiency in Vietnamese patients with type 2 diabetes who were treated with metformin and to investigate factors associated with vitamin B12 deficiency. This is a cross-sectional study that was conducted in Vinmec Central Park Hospital from February to June 2023. The clinical and paraclinical characteristics of the participants were recorded, and the levels of vitamin B12 and folate were measured. The rate of vitamin B12 deficiency in patients treated with metformin was found to be 18.6%. Further, the duration of diabetes, duration of metformin use, metformin dose, and hemoglobin levels were statistically associated with vitamin B12 deficiency with OR (95% CI) = 1.12 (1.03-1.19), 1.01 (1.00-1.02), 1.002 (1.001-1.002), 0.74 (0.55-0.99), respectively. After adjusting for covariates, a metformin dose greater than the median dose remained the only parameter associated with vitamin B12 deficiency, with OR (95% CI) = 4.10 (1.62-10.36). Moreover, when combining both long-term use of metformin and a metformin dose greater than the median dose, the OR increased to 5.25 (95% CI: 2.11-13.15). These results demonstrate that vitamin B12 deficiency in patients treated with metformin is quite prevalent in Vietnam and that those with long-term use of metformin (48 months or more) and high metformin dose (1000 mg/day or more) are at high risk of experiencing this adverse effect and so require screening.


Assuntos
Diabetes Mellitus Tipo 2 , Hipoglicemiantes , Metformina , Deficiência de Vitamina B 12 , Humanos , Metformina/uso terapêutico , Metformina/efeitos adversos , Deficiência de Vitamina B 12/induzido quimicamente , Deficiência de Vitamina B 12/tratamento farmacológico , Deficiência de Vitamina B 12/epidemiologia , Masculino , Diabetes Mellitus Tipo 2/tratamento farmacológico , Feminino , Estudos Transversais , Pessoa de Meia-Idade , Hipoglicemiantes/uso terapêutico , Hipoglicemiantes/efeitos adversos , Idoso , Vitamina B 12/sangue , Vietnã/epidemiologia , Adulto , Ácido Fólico/administração & dosagem
9.
Trials ; 25(1): 289, 2024 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-38685109

RESUMO

BACKGROUND: Iron and folic acid (IFA) supplements are currently provided to Cambodian women during pregnancy. However, recent research has found benefits of a multiple micronutrient supplement (MMS) over just IFA alone on several outcomes of perinatal and infant health. The Ministry of Health in Cambodia has proposed a transition from IFA to MMS but to effectively guide this transition requires implementation research on the acceptability and adherence to MMS (over IFA). METHODS: This non-inferiority trial aims to assess the adherence and acceptability of IFA (60 mg elemental iron and 400 µg folic acid) compared to MMS (standard UNIMMAP formulation including 15 micronutrients) during antenatal care in Cambodia. A prospective cohort of 1545 pregnant women will be assigned to one of three trial arms: (1) IFA for 90 days [IFA-90]; (2) MMS for 180 days with two distributions of 90-count tablet bottles [MMS-90]; or (3) MMS for 180 days with one 180-count tablet bottle [MMS-180]. Each arm will enroll 515 women across 48 health centers (clusters) in Kampong Thom Province in Cambodia. The primary outcome is the non-inferiority of adherence rates of MMS-180 compared to IFA-90, as assessed by tablet counts. Mixed-effects logistic and linear regression models will be used to estimate the difference in the adherence rate between the two groups, with an 'a priori' determined non-inferiority margin of 15%. Acceptability of MMS and IFA will be measured using a quantitative survey conducted with enrolled pregnant women at 30-day, 90-day, and 180-day time-points. DISCUSSION: Findings from this study will guide an effective and feasible MMS scale-up strategy for Cambodia. Additionally, the findings will be shared globally with other stakeholders planning to scale up MMS in other countries. TRIAL REGISTRATION: NCT05867836 ( ClinicalTrials.gov , registered May 18, 2023).


Assuntos
Suplementos Nutricionais , Ácido Fólico , Micronutrientes , Humanos , Feminino , Gravidez , Camboja , Micronutrientes/administração & dosagem , Ácido Fólico/administração & dosagem , Estudos Prospectivos , Ferro/administração & dosagem , Estudos de Equivalência como Asunto , Cuidado Pré-Natal/métodos , Adesão à Medicação , Adulto , Estudos Multicêntricos como Assunto , Aceitação pelo Paciente de Cuidados de Saúde , Resultado do Tratamento
10.
Midwifery ; 132: 103984, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38554606

RESUMO

BACKGROUND: Folic acid (FA) supplementation before and in early pregnancy is known to improve outcomes such as reducing neural tube defects; however, little is known about groups in Australia at risk of low FA use. AIM: To determine whether differences exist in FA supplementation rates between Australian-born women and migrant women, with a secondary aim of examining the sociodemographic characteristics of women who are not supplementing with FA in early pregnancy. METHODS: A retrospective cohort study from January 2018-July 2022 in a high-migrant population in Western Sydney, Australia. Multivariate logistic regression analysis was conducted adjusting for confounders including place of birth, age, ethnicity, parity, history of diabetes, and type of conception. FINDINGS: There were 48,045 women who met inclusion criteria; 65% of whom were migrants. We identified that 39.4% of the study population did not report FA supplementation by early pregnancy. Women who were migrants were more likely to report FA usage than those born in Australia (aOR 1.24; 95%CI 1.17-1.31). Women least likely to report use of FA were women < 20 years of age (aOR 0.54; 95%CI 0.44-0.67) and multiparous women (aOR 0.84; 95%CI 0.82-0.86). Women with type 1 or type 2 diabetes were more likely to report FA use (aOR 1.66; 95%CI 1.11-2.48, aOR 1.30; 95%CI 1.05-1.61). CONCLUSION: A significant proportion of the population did not report FA supplementation before or during early pregnancy. To increase uptake of FA supplementation, clinicians and public health messaging should target at-risk groups.


Assuntos
Suplementos Nutricionais , Ácido Fólico , Migrantes , Humanos , Feminino , Ácido Fólico/uso terapêutico , Ácido Fólico/administração & dosagem , Adulto , Gravidez , Austrália , Estudos de Coortes , Estudos Retrospectivos , Suplementos Nutricionais/estatística & dados numéricos , Migrantes/estatística & dados numéricos , Migrantes/psicologia , Cuidado Pré-Concepcional/métodos , Cuidado Pré-Concepcional/estatística & dados numéricos , Cuidado Pré-Concepcional/normas , Modelos Logísticos , Defeitos do Tubo Neural/prevenção & controle
11.
Food Funct ; 15(8): 4193-4206, 2024 Apr 22.
Artigo em Inglês | MEDLINE | ID: mdl-38506303

RESUMO

Osteoporosis caused by bone loss is one of the serious global public health problems. Folic acid is a B vitamin with multiple physiological functions such as lipid regulation and antioxidant capacity, and its potential to improve bone loss has attracted our attention. Through NHANES database analysis, we found that folic acid intake was significantly correlated with whole-body bone mineral density (BMD) in people aged 20-60 years, and the association may be mediated by the body fat rate. Male C57Bl/6 mice were fed either a normal diet or a high-fat diet, and folic acid was added to drinking water for supplementation. Our results indicated that mice with high body fat showed bone microstructure damage and bone loss, while folic acid supplementation improved bone quality. At the same time, we found that mice with high body fat exhibited abnormal blood lipids, dysregulation of intestinal flora, and metabolic disorders. Folic acid supplementation improved these phenomena. Through the network analysis of intestinal flora and metabolites, we found that LCA and TGR5 may play important roles. The results showed that folic acid promoted the expression of LCA and TGR5 in mice, increased the phosphorylation of AMPK, and decreased the phosphorylation of NF-κB and ERK, thereby reducing bone loss. In summary, folic acid intake is closely related to BMD, and folic acid supplementation can prevent high body fat-induced bone loss. Our study provides new ideas and an experimental basis for preventing bone loss and osteoporosis.


Assuntos
Densidade Óssea , Dieta Hiperlipídica , Suplementos Nutricionais , Ácido Fólico , Camundongos Endogâmicos C57BL , Osteoporose , Receptores Acoplados a Proteínas G , Transdução de Sinais , Animais , Ácido Fólico/farmacologia , Ácido Fólico/administração & dosagem , Masculino , Camundongos , Transdução de Sinais/efeitos dos fármacos , Receptores Acoplados a Proteínas G/metabolismo , Receptores Acoplados a Proteínas G/genética , Osteoporose/prevenção & controle , Osteoporose/metabolismo , Dieta Hiperlipídica/efeitos adversos , Adulto , Humanos , Pessoa de Meia-Idade , Densidade Óssea/efeitos dos fármacos , Adulto Jovem , Feminino
12.
Arch Gynecol Obstet ; 308(6): 1863-1869, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37715805

RESUMO

BACKGROUND: Micronutrient supplementation during pregnancy is a controversial issue. For some micronutrients, for example folic acid or iodine, the evidence regarding supplementation is clear, whereas for others, such as zinc or vitamin E, it is not. Studies show that a large number of pregnant women have deficient levels of folic acid and iodine. However, especially with folic acid, starting supplementation during the preconception period is crucial. It is, therefore, important that gynaecologists explain this to their pregnant or preconceptional patients. Our goal was to find out how gynaecologists make their recommendations on this topic, how they assess the compliance of their patients and which micronutrients they consider to be important before/during pregnancy and during breastfeeding. METHOD AND RESULTS: We sent about 12,000 questionnaires to all registered resident gynaecologists in Germany, with a response rate of 12.2%. Regarding which micronutrients gynaecologists  consider to be particularly important during pregnancy, there was a broad agreement for both folic acid and iodine (> 88% answered yes). According to the questionnaire, doctors rate other micronutrients, such as vitamin D and omega-3 fatty acids, as less essential. The controversial evidence level for many micronutrients certainly plays a role here. Overall, the intake rate, especially for preconceptional women, is classified as rather low (< 60%). The most widely valued reason is the high price of dietary supplements. It was also noticeable that doctors consider certain micronutrients to be particularly important but then do not include them in the products they recommend. CONCLUSION: Overall, there seems to be uncertainty about micronutrients in pregnancy and their supplementation. The study situation is often ambiguous and there are no official guidelines, leading to ambiguous recommendations from doctors and therefore low intake rates for pregnant or preconceptional women.


Assuntos
Ácido Fólico , Iodo , Feminino , Humanos , Gravidez , Suplementos Nutricionais , Ácido Fólico/administração & dosagem , Iodo/administração & dosagem , Micronutrientes , Vitaminas/administração & dosagem , Fertilidade
13.
JAMA ; 330(5): 454-459, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37526713

RESUMO

Importance: Neural tube defects are among the most common congenital malformations in the US, with an estimated 3000 pregnancies affected each year. Many of these neural tube defects are caused by low folate levels in the body. Objective: The US Preventive Services Task Force (USPSTF) commissioned a reaffirmation evidence update on the benefits and harms of folic acid supplementation. Population: Persons who are planning to or could become pregnant. Evidence Assessment: The USPSTF concludes that, for persons who are planning to or could become pregnant, there is high certainty that folic acid supplementation has a substantial net benefit to prevent neural tube defects in their offspring. Recommendation: The USPSTF recommends that all persons planning to or who could become pregnant take a daily supplement containing 0.4 to 0.8 mg (400 to 800 µg) of folic acid. (A recommendation).


Assuntos
Suplementos Nutricionais , Deficiência de Ácido Fólico , Ácido Fólico , Defeitos do Tubo Neural , Complicações na Gravidez , Feminino , Humanos , Gravidez , Comitês Consultivos , Ácido Fólico/administração & dosagem , Ácido Fólico/uso terapêutico , Programas de Rastreamento , Defeitos do Tubo Neural/etiologia , Defeitos do Tubo Neural/prevenção & controle , Serviços Preventivos de Saúde , Deficiência de Ácido Fólico/complicações , Deficiência de Ácido Fólico/diagnóstico , Deficiência de Ácido Fólico/tratamento farmacológico , Complicações na Gravidez/etiologia , Complicações na Gravidez/prevenção & controle , Cuidado Pré-Concepcional/normas
14.
JAMA ; 330(5): 460-466, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37526714

RESUMO

Importance: Neural tube defects are among the most common birth defects in the US. Objective: To review new evidence on the benefits and harms of folic acid supplementation for the prevention of neural tube defects to inform the US Preventive Services Task Force. Evidence Review: Sources included PubMed, Cochrane Library, Embase, and trial registries from July 1, 2015, through July 2, 2021; references; and experts, with surveillance through February 10, 2023. Two investigators independently reviewed English-language randomized studies and nonrandomized cohort studies in very highly developed countries that focused on the use of folic acid supplementation for the prevention of neural tube defect-affected pregnancies; methodological quality was dually and independently assessed. Findings: Twelve observational studies (reported in 13 publications) were eligible for this limited update (N = 1 244 072). Of these, 3 studies (n = 990 372) reported on the effect of folic acid supplementation on neural tube defects. For harms, 9 studies were eligible: 1 randomized clinical trial (n = 431) reported on variations in twin delivery, 7 observational studies (n = 761 125) reported on the incidence of autism spectrum disorder, and 1 observational study (n = 429 004) reported on maternal cancer. Two cohort studies and 1 case-control study newly identified in this update reported on the association between folic acid supplementation and neural tube defects (n = 990 372). One cohort study reported a statistically significant reduced risk of neural tube defects associated with folic acid supplementation taken before pregnancy (adjusted relative risk [aRR], 0.54 [95% CI, 0.31-0.91]), during pregnancy (aRR, 0.62 [95% CI, 0.39-0.97]), and before and during pregnancy (aRR, 0.49 [95% CI, 0.29-0.83]), but this association occurred for only the later of 2 periods studied (2006-2013 and not 1999-2005). No other statistically significant benefits were reported overall. No study reported statistically significant harms (multiple gestation, autism, and maternal cancer) associated with pregnancy-related folic acid exposure. Conclusions and Relevance: New evidence from observational studies provided additional evidence of the benefit of folic acid supplementation for preventing neural tube defects and no evidence of harms related to multiple gestation, autism, or maternal cancer. The new evidence was consistent with previously reviewed evidence on benefits and harms.


Assuntos
Suplementos Nutricionais , Ácido Fólico , Defeitos do Tubo Neural , Complicações na Gravidez , Feminino , Humanos , Gravidez , Transtorno do Espectro Autista/induzido quimicamente , Suplementos Nutricionais/efeitos adversos , Ácido Fólico/administração & dosagem , Ácido Fólico/efeitos adversos , Ácido Fólico/uso terapêutico , Defeitos do Tubo Neural/etiologia , Defeitos do Tubo Neural/prevenção & controle , Ensaios Clínicos Controlados Aleatórios como Assunto , Complicações na Gravidez/etiologia , Complicações na Gravidez/prevenção & controle , Risco , Cuidado Pré-Concepcional , Cuidado Pré-Natal
15.
Eur J Clin Nutr ; 77(10): 966-971, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37537294

RESUMO

BACKGROUND: The persistent high prevalence of anaemia among Indian women of reproductive age (WRA) despite aggressive long-term iron supplementation could be related to over-diagnosis from an inappropriately high haemoglobin (Hb) diagnostic cut-off. To develop an appropriate cut-off for Indian WRA, we hypothesized that during iron-folic acid (IFA) supplementation to a mixed (anaemic/non-anaemic) WRA population, the positive slope of the Hb-plasma ferritin (PF) response in anaemic women would inflect into a plateau (zero-response) as a non-anaemic status is reached. The 2.5th percentile of the Hb distribution at this inflection point will be the diagnostic Hb cut-off for iron-responsive anaemia. METHOD: A hierarchical mixed effects model, with a polynomial mean and variance model to account for intraclass correlation due to repeated measures, was used to estimate the response curve of Hb to PF, or body iron stores, in anaemic and non-anaemic WRA (without inflammation), who were receiving a 90-day IFA supplementation. RESULTS: The Hb response curve at low PF values showed a steep increase, which inflected into a plateau at a PF of 10.1 µg/L and attained a steady state at a PF of 20.6 µg/L. The Hb distribution at the inflection was a normal probability distribution, with a mean of 12.3 g/dL. The 2.5th percentile value of this distribution, or the putative diagnostic Hb cut-off for anaemia, was 10.8 g/dL (~11 g/dL). CONCLUSION: The derived Hb cut-off is lower than the current adult values of 12 g/dL and could partly explain the persistently high prevalence of anaemia.


Assuntos
Anemia , Hemoglobinas , Adulto , Feminino , Humanos , Anemia/diagnóstico , Anemia/epidemiologia , Anemia Ferropriva/diagnóstico , Anemia Ferropriva/epidemiologia , Ácido Fólico/administração & dosagem , Hemoglobinas/análise , Ferro
16.
Rev Bras Ginecol Obstet ; 45(4): 207-214, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37224843

RESUMO

Supplementation with folic acid (FA) during gestation has been recommended by medical society all over the world, but some studies have shown that intake of high folic acid diet may unleash damages to the descendants. OBJECTIVES: Describing the effects of maternal supplementation with FA during gestation on offspring's kidney at late life stages. DATA SOURCE: It is a systematic review by which were consulted the following databases: Medline, through Pubmed, Lilacs, and SciELO. The research was performed using the keywords "Folic acid", "Gestation" and "Kidney". STUDY SELECTION: Eight studies were regarded for this systematic review. DATA COLLECTION: Only studies that evaluated folic acid consumption during gestation and its effects exclusively on descendants' kidney at several phases of life were regarded. RESULTS: Gestational FA intake did not change the renal volume, glomerular filtration rate and the expression of some essential genes in the kidney of puppies whose dams were supplemented with FA. Maternal consumption of double FA plus selenium diet was effective in preserving antioxidant enzymes activity in the kidney of descendants from mothers exposed to alcohol. FA supplementation decreased some gross anomalies in the puppies caused by teratogenic drug despite of had not been effective in preventing some renal architectural damages. CONCLUSION: FA supplementation did not cause renal toxicity; it exerted an antioxidant protective effect and mitigated some renal disorders caused by severe aggressions.


A suplementação com ácido fólico (AF) durante a gestação tem sido recomendada pela sociedade médica em todo o mundo, mas alguns estudos têm mostrado que a ingestão de altas quantidades de ácido fólico na dieta pode desencadear danos aos descendentes. Objetivos: Descrever os efeitos da suplementação materna com AF durante a gestação no rim da prole em fases tardias da vida. Fonte de Dados: Trata-se de uma revisão sistemática realizada através da consulta das seguintes bases de dados: Medline, através da Plataforma Pubmed, Lilacs e Scielo. A pesquisa foi realizada utilizando-se as palavras-chave "Ácido Fólico", "Gestação" e "Rim". Seleção dos Estudos: Oito estudos foram considerados para esta revisão sistemática. Coleta de Dados: Foram incluídos estudos que abordaram o consumo de ácido fólico durante a gestação e seus efeitos exclusivamente no rim dos descendentes em diferentes fases da vida. Resultados: O consumo gestacional de AF não alterou o volume renal, a taxa de filtração glomerular e a expressão de alguns genes essenciais no rim dos filhotes de mães suplementadas com AF. A associação de AF e selênio na dieta materna foi eficaz na preservação da atividade de enzimas antioxidantes no rim da prole de mães expostas ao álcool. O consumo de AF diminuiu algumas anomalias importantes nos filhotes causadas por drogas teratogênicas, apesar de não ter sido eficiente na prevenção de alguns danos a arquitetura renal. Conclusão: A suplementação com AF não causou toxicicdade renal, exerceu efeito protetor antioxidante e mitigou algumas desordens renais causadas por agressões severas.


Assuntos
Antioxidantes , Suplementos Nutricionais , Ácido Fólico , Rim , Animais , Cães , Feminino , Humanos , Etanol , Mães , Ácido Fólico/administração & dosagem
17.
J Health Popul Nutr ; 42(1): 31, 2023 04 10.
Artigo em Inglês | MEDLINE | ID: mdl-37038237

RESUMO

BACKGROUND: The aim of this study was to examine the relationship between dietary intake of folate and niacin and diabetes risk in Chinese adults. METHODS: This is a cross-sectional study. Demographic and anthropometric data along with information on dietary intake of vitamins were collected, and eligible participants were recruited to complete the questionnaire. A binary logistic regression analysis was conducted to examine the association between dietary intake of vitamins and diabetes risk, with adjustment for potential confounders. Non-linear dose-response relationships between dietary intake of folate and niacin and diabetes risk were also evaluated using adjusted restricted cubic splines. RESULTS: Of the 3106 eligible participants, 15.9% had diabetes. Median folate was significantly higher in diabetic patients than in controls (32.030 vs. 27.600 gµ), while median niacin was significantly lower (7.000 vs. 7.900 mg). After controlling for potential confounders, binary logistic regression analysis showed that each unit increase in folate intake was associated with a 1.002-fold increase in the risk of developing diabetes (odds ratio (OR) = 1.002; 95% confidence interval (CI) 1.000-1.004; P = 0.022), while each unit increase in niacin intake was associated with a 3.5% reduction in diabetes risk (OR = 0.965; 95% CI 0.944-0.986; P = 0.001). The plots of restricted cubic splines presented an atypical inverted U-shaped association between dietary intake of folate and diabetes risk. CONCLUSIONS: Diabetic patients had a low intake of vitamins, especially the B vitamins. Dietary intake of folate and niacin tended to be independently associated with the risk of diabetes. Nevertheless, this study is observational and a large-scale randomized controlled trial is yet to be conducted, which will add to the evidence of the study results.


Assuntos
Diabetes Mellitus , Ácido Fólico , Niacina , Adulto , Humanos , Estudos Transversais , Diabetes Mellitus/epidemiologia , Dieta/efeitos adversos , População do Leste Asiático , Ácido Fólico/administração & dosagem , Niacina/administração & dosagem , Vitaminas
18.
BMC Pregnancy Childbirth ; 23(1): 260, 2023 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-37072714

RESUMO

BACKGROUND: Anemia is still one of the major public health problems in many developing countries including Ethiopia. Thus, this study aimed to assess individual and contextual-level factors associated with iron-folic acid supplement intake during pregnancy in Ethiopia. METHODS: A secondary analysis was done on the 2019 mini-Ethiopian Demographic and Health Survey (EDHS) dataset. A total of 3,927 pregnant women who gave birth five years before the survey were included in the analysis. Multi-level mixed-effect logistic regression analysis was done by STATA/SE version 14.0 to identify individual and contextual-level factors. Adjusted Odds Ratio (AOR) with 95% Confidence Interval (CI) was used to show the strength and direction of the association. The level of statistical significance was declared at a P value less than 0.05. RESULTS: Those primary educated [AOR = 1.83, 95% CI: (1.24, 2.74)], secondary educated [AOR = 2.75, 95% CI: (1.57, 4.824)], women who had greater than 5 living children [AOR = 2.02, 95% CI: (1.25, 3.27)], women who had ANC visit [AOR = 21.26, 95% CI: (13.56, 33.32)] and women who lived in a cluster with high proportion of women had ANC visit [AOR = 1.72, 95% CI: (1.17, 2.54)] and women who lived in Somali [AOR = 0.44 0.73, 95% CI: (0.22, 0.87)] were significantly associated with iron-folic acid intake during pregnancy. CONCLUSIONS: Both individual and contextual-level factors were significantly associated with iron-folic acid intake during pregnancy. From individual-level factors: education status of women, the total numbers of living children, and ANC follow-up are significant and from contextual-level factors: region and living in a high proportion of women who had ANC follow-up were found to have a statistically significant association. Promoting women's education and maternal health services like ANC and intervention targeting the Somali region would be the recalled area of the government.


Assuntos
Ferro , Cuidado Pré-Natal , Criança , Feminino , Humanos , Gravidez , Estudos Transversais , Etiópia/epidemiologia , Ácido Fólico/administração & dosagem , Ferro/administração & dosagem , Análise Multinível
19.
Nutr Res ; 112: 46-54, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36965328

RESUMO

We hypothesized that the prevalence of hypertension is related to B-vitamin intake in the general population, but it has not been sufficiently studied. This study aimed to investigate the intakes of dietary folate, vitamin B6, and vitamin B12 concerning hypertension in US adults. A total of 55 569 adults from National Health and Nutrition Examination Survey III and 1999-2014 were included in this study. Nutrient intake was collected from subjects through one or two 24-hour dietary reviews. Multiple logistic regression models were used to examine the relationship between these nutrient intakes and hypertension. Among male participants, dietary folate, vitamin B6, and vitamin B12 intakes were significantly and negatively associated with the prevalence of hypertension, with multivariate-adjusted odds ratios (ORs) of 0.61 (95% confidence interval [CI], 0.55-0.68), 0.65 (95% CI, 0.59-0.72), and 0.84 (95% CI, 0.75-0.95) for the highest quartile group compared with the lowest group. Results were similar for female participants, with multivariate-adjusted ORs of 0.63 (95% CI, 0.57-0.71), 0.60 (95% CI, 0.53-0.66), and 0.87 (95% CI, 0.77-0.98) for the highest quartile group. Moreover, there was a linear trend (Ptrend < .001) in both men and women that the prevalence of hypertension tended to decrease with increased intake of folate, vitamin B6, and vitamin B12; however, the decreases above the third quartile were negligible. Dietary folate, vitamin B6, and vitamin B12 were significantly associated negatively with hypertension, indicating that these nutrients might have a protective effect against hypertension in United States adults.


Assuntos
Ácido Fólico , Hipertensão , Complexo Vitamínico B , Adulto , Feminino , Humanos , Masculino , Ácido Fólico/administração & dosagem , Inquéritos Nutricionais , Prevalência , Piridoxina , Vitamina B 12/administração & dosagem , Vitamina B 6/administração & dosagem , Hipertensão/epidemiologia , Adolescente , Pessoa de Meia-Idade
20.
Rev. bras. ginecol. obstet ; 45(4): 207-214, 2023. tab
Artigo em Inglês | LILACS | ID: biblio-1449725

RESUMO

Abstract Supplementation with folic acid (FA) during gestation has been recommended by medical society all over the world, but some studies have shown that intake of high folic acid diet may unleash damages to the descendants. Objectives: Describing the effects of maternal supplementation with FA during gestation on offspring's kidney at late life stages. Data Source: It is a systematic review by which were consulted the following databases: Medline, through Pubmed, Lilacs, and SciELO. The research was performed using the keywords "Folic acid", "Gestation" and "Kidney". Study Selection: Eight studies were regarded for this systematic review. Data Collection: Only studies that evaluated folic acid consumption during gestation and its effects exclusively on descendants' kidney at several phases of life were regarded. Results: Gestational FA intake did not change the renal volume, glomerular filtration rate and the expression of some essential genes in the kidney of puppies whose dams were supplemented with FA. Maternal consumption of double FA plus selenium diet was effective in preserving antioxidant enzymes activity in the kidney of descendants from mothers exposed to alcohol. FA supplementation decreased some gross anomalies in the puppies caused by teratogenic drug despite of had not been effective in preventing some renal architectural damages. Conclusion: FA supplementation did not cause renal toxicity; it exerted an antioxidant protective effect and mitigated some renal disorders caused by severe aggressions.


Resumo A suplementação com ácido fólico (AF) durante a gestação tem sido recomendada pela sociedade médica em todo o mundo, mas alguns estudos têm mostrado que a ingestão de altas quantidades de ácido fólico na dieta pode desencadear danos aos descendentes. Objetivos: Descrever os efeitos da suplementação materna com AF durante a gestação no rim da prole em fases tardias da vida. Fonte de Dados: Trata-se de uma revisão sistemática realizada através da consulta das seguintes bases de dados: Medline, através da Plataforma Pubmed, Lilacs e Scielo. A pesquisa foi realizada utilizando-se as palavras-chave "Ácido Fólico", "Gestação" e "Rim". Seleção dos Estudos: Oito estudos foram considerados para esta revisão sistemática. Coleta de Dados: Foram incluídos estudos que abordaram o consumo de ácido fólico durante a gestação e seus efeitos exclusivamente no rim dos descendentes em diferentes fases da vida. Resultados: O consumo gestacional de AF não alterou o volume renal, a taxa de filtração glomerular e a expressão de alguns genes essenciais no rim dos filhotes de mães suplementadas com AF. A associação de AF e selênio na dieta materna foi eficaz na preservação da atividade de enzimas antioxidantes no rim da prole de mães expostas ao álcool. O consumo de AF diminuiu algumas anomalias importantes nos filhotes causadas por drogas teratogênicas, apesar de não ter sido eficiente na prevenção de alguns danos a arquitetura renal. Conclusão: A suplementação com AF não causou toxicicdade renal, exerceu efeito protetor antioxidante e mitigou algumas desordens renais causadas por agressões severas.


Assuntos
Humanos , Feminino , Gravidez , Filtros Descendentes , Ácido Fólico/administração & dosagem , Rim
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