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Effects of vitamin and multiple micronutrient supplementation for pregnant and/or lactating women on maternal and infant nutritional status in low- and middle-income countries: a systematic review and meta-analysis 中低收入国家孕妇和/或哺乳期妇女补充维生素和多种微量营养素对母婴营养状况的影响:一项系统回顾和荟萃分析
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-08-05 DOI: 10.1016/j.advnut.2025.100487
Sachin Shinde , Cara A Yelverton , Mashavu Yussuf , Lina Nurhussien , Dongqing Wang , Wafaie W Fawzi

Background

Globally, over half of women of reproductive age are affected by at least one micronutrient deficiency, often exacerbated during pregnancy and lactation, contributing to adverse maternal and child health outcomes. This systematic review and meta-analysis synthesized impact of vitamin supplementation on maternal, infant and lactational nutritional status in low- and middle-income countries.

Methods

MEDLINE, EMBASE, CENTRAL, and WHO library databases were searched. Eligible studies included randomized controlled trials of micronutrient supplementation in healthy pregnant/lactating women, assessing maternal/infant micronutrient status or milk composition. Random-effects meta-analysis was performed for outcomes with ≥2 studies, and evidence quality was evaluated using GRADE.

Results

Eighty-seven papers (76 trials, including 65 for meta-analysis) were included. Maternal vitamin B-12 supplementation during pregnancy increased serum cobalamin concentrations (standard mean difference [SMD] 0.39; 95% CI 0.11, 0.68; P=0.01) and reduced deficiency (OR 0.43; 95% CI 0.19, 0.95; P=0.04), with improved B-12 concentrations in milk, especially when administered postpartum (SMD 0.33; 95% CI 0.02, 0.63; P=0.04), but had no consistent effect on infant or cord serum cobalamin concentrations. Vitamin A supplementation during pregnancy or postpartum improved maternal serum concentrations (SMD 0.60; 95% CI 0.13, 1.08; P<0.001) and reduced deficiency at thresholds ≤0.7 μmol/L (OR 0.55; 95% CI 0.43, 0.71; P<0.001); however, its effects on infant and cord serum levels were negligible. Postpartum vitamin A supplementation improved milk vitamin A concentrations (SMD 0.53; 95% CI 0.19, 0.86; P<0.001), particularly with single high-dose regimens. Supplementation with vitamin D during pregnancy increased maternal serum vitamin D concentrations (SMD 1.68; 95% CI 0.99, 2.37; P<0.001), reduced deficiency at thresholds ≤50 nmol/L (OR 0.30; 95% CI 0.14, 0.64; P<0.001) and increased vitamin D concentrations in infant and cord serum.

Conclusions

Micronutrient supplementation during pregnancy and lactation improved maternal nutritional status but showed inconsistent effects on infant nutritional status, highlighting the need for further research.

PROSPERO Registration ID

CRD42022308715; https://tinyurl.com/y33cxekr.
背景:在全球范围内,超过一半的育龄妇女受到至少一种微量营养素缺乏症的影响,这种缺乏症往往在怀孕和哺乳期间加剧,造成不利的孕产妇和儿童健康结果。本系统综述和荟萃分析综合了维生素补充对中低收入国家孕产妇、婴儿和哺乳期营养状况的影响。方法:检索MEDLINE、EMBASE、CENTRAL和WHO图书馆数据库。符合条件的研究包括对健康孕妇/哺乳期妇女补充微量营养素的随机对照试验,评估产妇/婴儿微量营养素状况或牛奶成分。对≥2项研究的结果进行随机效应荟萃分析,并使用GRADE评价证据质量。结果:共纳入87篇论文(76项试验,其中65项荟萃分析)。孕妇在怀孕期间补充维生素B-12可增加血清钴胺素水平(标准均差[SMD] 0.39;95% ci 0.11, 0.68;P=0.01)和减少缺乏症(OR 0.43;95% ci 0.19, 0.95;P=0.04),提高了牛奶中的B-12浓度,特别是产后给药(SMD 0.33;95% ci 0.02, 0.63;P=0.04),但对婴儿或脐带血清钴胺素水平没有一致的影响。妊娠期或产后补充维生素A可改善孕妇血清水平(SMD 0.57;95% ci 0.12, 1.01;P=0.01),阈值≤0.7 μmol/L时缺陷降低(OR 0.57;95% ci 0.45, 0.73;结论:孕期和哺乳期微量营养素的补充改善了母亲的营养状况,但对婴儿营养状况的影响并不一致,需要进一步研究。普洛斯彼罗注册id: CRD42022308715;https://tinyurl.com/y33cxekr。
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引用次数: 0
Tea Polyphenol Epigallocatechin Gallate and the Gut–Health Axis: Unraveling Structural Characteristics, Metabolic Pathways, and Systemic Benefits 茶多酚EGCG和肠道健康轴:揭示结构特征、代谢途径和全身益处。
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-10-15 DOI: 10.1016/j.advnut.2025.100545
Jiaying Yang, Wei Chen, Jiayi Chen, Dengchao Xie, Yuefei Wang, Jihong Zhou
Dietary components significantly impact human health, influencing diverse physiological processes from metabolic homeostasis to cognitive function and aging. Tea, a widely consumed functional beverage rich in antioxidants, has gained attention for its health benefits. Epigallocatechin gallate (EGCG), the most abundant and bioactive catechin in green tea, is renowned for its potent biological activities. However, the direct absorption of EGCG is limited due to its low oral bioavailability, with a substantial portion reaching the colon where it interacts extensively with gut microbiota. This microbial interplay is crucial for EGCG’s biotransformation and the realization of its health-promoting potential, yet the underlying mechanisms remain to be fully elucidated. This review synthesizes EGCG's structural features, metabolism, and interactions with gut microbiota, summarizing its roles in gut health and systemic effects through gut-related axes, and outlines future research. First, it elaborates EGCG's structural features, as a flavan-3-ol with a polyphenolic structure containing multiple hydroxyl groups, whose antioxidant and bioactive properties are associated with the specific arrangement of benzene rings and the gallate moiety. Second, it outlines its metabolic process, limited absorption in the small intestine, enzymatic metabolism in the small intestine and liver (including methylation, glucuronidation, and sulfation), and extensive biotransformation in the colon by gut microbiota into metabolites such as epigallocatechin and gallic acid. Third, it explores its effects on the gut, modulating gut microbiota composition by promoting beneficial bacteria and inhibiting pathogenic strains, enhancing intestinal barrier function by upregulating tight junction proteins, and promoting the production of short-chain fatty acids. Finally, it elucidates how EGCG modulates key gut-related health pathways and its broader implications for systemic health through various interconnected gut axes, including the gut–liver, gut–brain, gut–renal, and gut–lung axes, and concludes by outlining prospective research directions aimed at further elucidating the potential of EGCG in promoting health.
饮食成分显著影响人体健康,影响从代谢稳态到认知功能和衰老的多种生理过程。茶是一种广泛消费的富含抗氧化剂的功能性饮料,因其对健康的益处而受到关注。表没食子儿茶素没食子酸酯(EGCG)是绿茶中含量最多、最具生物活性的儿茶素,以其强大的生物活性而闻名。然而,EGCG的直接吸收是有限的,因为它的低口服生物利用度,有很大一部分到达结肠,在那里它与肠道微生物群广泛相互作用。这种微生物相互作用对于EGCG的生物转化和实现其健康促进潜力至关重要,但其潜在机制仍有待充分阐明。本文综述了EGCG的结构特征、代谢及其与肠道菌群的相互作用,并通过肠道相关轴综述了EGCG在肠道健康和全身效应中的作用,并对未来的研究进行了展望。首先阐述了EGCG的结构特点,EGCG是一种含有多个羟基的多酚结构的黄烷-3-醇,其抗氧化和生物活性与苯环和没食子酸酯部分的特定排列有关。其次,概述了其代谢过程,在小肠的有限吸收,小肠和肝脏的酶促代谢(包括甲基化,葡萄糖醛酸化和硫酸化),以及肠道微生物群在结肠中广泛的生物转化为代谢物,如表没食子儿茶素和没食子酸。第三,探索其对肠道的作用,通过促进有益菌群和抑制致病菌群来调节肠道菌群组成,通过上调紧密连接蛋白来增强肠道屏障功能,促进短链脂肪酸的产生。最后,本文阐述了EGCG如何通过肠-肝、肠-脑、肠-肾和肠-肺等相互关联的肠道轴调节关键的肠道相关健康通路及其对全身健康的更广泛影响,并概述了旨在进一步阐明EGCG促进健康潜力的前瞻性研究方向。
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引用次数: 0
Phosphorus 磷。
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-11-11 DOI: 10.1016/j.advnut.2025.100555
Mona S Calvo, Jaime Uribarri
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引用次数: 0
A Systematic Review of Nonsugar Sweeteners and Cancer Epidemiology Studies 非糖甜味剂与癌症流行病学研究的系统综述。
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-09-30 DOI: 10.1016/j.advnut.2025.100527
Denali Boon , Satori A Marchitti , Kyle J Colonna , Ilkania M Chowdhury-Paulino , Wenchao Li , Axel Berky , Catalina Restrepo , Maia Jack , Julie E Goodman
Nonsugar sweeteners (NSSs) are added to foods and beverages to provide sweetness in place of sugar while reducing the total caloric content. Reducing sugar intake, and corresponding calories, may decrease the risk of diabetes and other health conditions associated with obesity (e.g., cancer). Numerous observational epidemiology studies have evaluated the effect of NSSs on cancer risk, sometimes focusing on a specific NSS or a specific cancer, other times focusing on all NSSs or all cancers. We conducted a systematic review of epidemiology studies of NSS intake (of all types in aggregate and individually) and the risks of all types of cancer published through Fall 2024 [preregistered with Open Science Framework (https://osf.io/gc8v6)]. We considered how major study quality concerns might have impacted the interpretation of individual study results, as well as the evidence as a whole. We identified 90 studies of acesulfame potassium (ace-K), aspartame, cyclamate, saccharin, sucralose, or nonspecific NSSs in aggregate [e.g., diet sodas, artificially sweetened beverages], and 17 specific types of cancer. We found no consistent associations between any NSS or NSSs in aggregate and any cancer overall, and no evidence for dose–response. NSS intake information was always self-reported, rendering exposure misclassification an ongoing challenge in all studies, and recall bias remains a significant possibility in all case-control studies. Many studies also did not fully account for potential confounders. Experimental animal and mechanistic evidence for NSSs does not support human-relevant carcinogenicity or any biologically plausible mechanisms by which NSSs could cause genotoxicity or cancer in humans. Overall, the epidemiology evidence does not support associations between any NSS and any cancer type.
非糖甜味剂(nss)被添加到食品和饮料中,以代替糖提供甜味,同时降低总热量含量。减少糖的摄入和相应的卡路里,可能会降低患糖尿病和其他与肥胖相关的健康状况(如癌症)的风险。许多观察性流行病学研究评估了NSS对癌症风险的影响,有时关注特定的NSS或特定的癌症,有时关注所有的NSS和所有的癌症。我们对截至2024年秋季发表的关于NSS摄入(所有类型的总体和个体)和所有类型癌症风险的流行病学研究进行了系统综述(在开放科学框架[https://osf.io/gc8v6]]预注册)。我们考虑了主要的研究质量问题如何影响对个别研究结果的解释,以及作为一个整体的证据。我们确定了90项关于乙酰磺胺钾(ace-K)、阿斯巴甜、甜蜜素、糖精、三氯蔗糖或非特异性非糖源物质(如无糖苏打水、人工加糖饮料[asb])和17种特定类型癌症的研究。我们没有发现任何NSS或总体NSS与任何癌症之间的一致关联,也没有剂量反应的证据。NSS摄入信息总是自我报告的,这使得暴露错误分类在所有研究中都是一个持续的挑战,在所有病例对照研究中,回忆偏倚仍然是一个很大的可能性。许多研究也没有充分考虑潜在的混杂因素。nss的实验动物和机制证据不支持与人类相关的致癌性,也不支持任何生物学上合理的nss可能导致人类遗传毒性或癌症的机制。总体而言,流行病学证据不支持任何NSS与任何癌症类型之间的关联。
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引用次数: 0
Bioactives in Food-As-Medicine for Special Medical Purposes 特殊医药食品中的生物活性物质。
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-10-14 DOI: 10.1016/j.advnut.2025.100546
Xueyao Xi , Senyang Hu , Xunuo Zhang, Peng An, Yongting Luo, Junjie Luo, Yinhua Zhu
With rising global attention to health and the accelerating trend of population aging, the demand for Foods for Special Medical Purposes (FSMPs) has increased substantially. These products are formulated not only to meet the basic nutritional needs of individuals with specific diseases or physiological conditions but also to provide regulatory physiological effects. In this context, the “Food-As-Medicine” (FAM) concept has gained growing interest. FAM seeks to prevent and treat diseases through the incorporation of functional foods into health management strategies and aligns closely with the traditional Chinese medicine (TCM) theory of “Food-Medicine Homologous” (FMH). Guided by FMH principles, natural bioactive compounds such as polysaccharides, flavonoids, and saponins have drawn significant attention for their anti-inflammatory, antioxidant, and immunomodulatory properties. However, their broader application faces several challenges, including low extraction efficiency, complex purification procedures, and difficulties in ensuring stability, all of which hinder industrial-scale development. This review systematically explores the potential, challenges, and opportunities of FMH-based products in FSMPs, with a particular emphasis on infant nutrition, maternal health, and the management of chronic diseases in the elderly. Our findings highlight the dual value of FMH ingredients in both nutritional support and functional modulation. Furthermore, by integrating FMH theory with modern nutritional science, this review offers a scientific basis for the innovative development of FSMPs. Given the growing global market demand and the increasing dissemination of TCM culture, this field is poised to enter a new phase of development.
随着全球对健康的关注和人口老龄化趋势的加速,对特殊医疗用途食品的需求大幅增加。这些产品的配方不仅满足患有特定疾病或生理状况的个人的基本营养需求,而且还提供调节生理作用。在这种背景下,“食物即药物”(FAM)概念获得了越来越多的兴趣。FAM寻求通过将功能食品纳入健康管理策略来预防和治疗疾病,并与“食药同源”(FMH)的传统中医理论密切相关。在FMH原理的指导下,多糖、黄酮类化合物和皂苷等天然生物活性化合物因其抗炎、抗氧化和免疫调节特性而受到广泛关注。然而,它们的广泛应用面临着一些挑战,包括萃取效率低、纯化程序复杂、稳定性难以保证,这些都阻碍了工业规模的发展。这篇综述系统地探讨了fmh产品在FSMPs中的潜力、挑战和机遇,特别强调了婴儿营养、孕产妇健康和老年人慢性病的管理。我们的研究结果强调了FMH成分在营养支持和功能调节方面的双重价值。同时,将FMH理论与现代营养科学相结合,为fsmp的创新开发提供科学依据。随着全球市场需求的不断增长和中医药文化的不断传播,这一领域即将进入一个新的发展阶段。
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引用次数: 0
Lack of Genotoxic and Carcinogenic Potential for Nonsugar Sweeteners: A Review of Animal and Mechanistic Evidence 无糖甜味剂缺乏基因毒性和致癌潜力:动物和机制证据综述。
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-11-04 DOI: 10.1016/j.advnut.2025.100552
Satori A Marchitti , Denali Boon , Maia Jack , Julie E Goodman
Globally, nonsugar sweeteners (NSSs) are commonly used in foods and beverages to enhance sweetness without added calories. NSSs have been the subject of numerous in vitro and animal studies to assess their potential carcinogenic risk to humans. As a complement to a larger systematic evaluation of the epidemiology evidence of NSSs and cancer, here we present a comprehensive review of the available experimental evidence from animal and mechanistic studies for the NSSs acesulfame-K (Ace-K), advantame, aspartame, cyclamate, neotame, saccharin, steviol glycosides, and sucralose within the context of ingredient safety. For this evaluation, we focused on genotoxicity, other potential cancer modes of action (MoAs), and carcinogenicity. Overall, high-quality studies have not shown evidence for carcinogenicity in animal models, except for saccharin, which causes bladder tumors in rats via a mechanism not relevant to humans. There is also no consistent or compelling evidence for any biologically plausible MoA by which any of these NSSs could cause cancer in humans. The results of this evaluation are consistent with the results of epidemiology studies, which have shown no consistent associations between NSS intake and cancer risk. Taken together, the body of available evidence supports previous conclusions by authoritative and regulatory bodies that Ace-K, advantame, aspartame, cyclamate, neotame, saccharin, steviol glycosides, and sucralose do not pose a genotoxic or carcinogenic risk to humans.
在全球范围内,非糖甜味剂(nss)通常用于食品和饮料中,以在不增加卡路里的情况下增强甜味。为了评估nss对人类的潜在致癌风险,已经进行了大量体外和动物研究。作为对nss和癌症的流行病学证据进行更大的系统评估的补充,我们在此全面回顾了nss在成分安全性方面的动物实验证据和机制研究,包括安赛蜜- k (Ace-K)、advantame、阿斯巴甜、甜蜜素、纽甜、糖精、甜菊糖苷和三氯蔗糖。在这项评估中,我们主要关注遗传毒性、其他潜在的癌症作用模式(MoAs)和致癌性。总的来说,高质量的研究没有在动物模型中显示致癌性的证据,除了糖精,它通过与人类无关的机制导致大鼠膀胱肿瘤。也没有一致或令人信服的证据表明,任何生物学上合理的MoA表明,这些nss中的任何一种都可能导致人类癌症。这一评估结果与流行病学研究的结果一致,后者显示NSS摄入量与癌症风险之间没有一致的关联。综上所述,现有的大量证据支持权威机构和监管机构先前的结论,即Ace-K、advantame、阿斯巴甜、甜蜜素、纽甜、糖精、甜菊糖苷和三氯蔗糖不会对人类造成遗传毒性或致癌风险。
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引用次数: 0
Adherence to Mediterranean Diet and Risk of Type 2 Diabetes: An Updated Systematic Review and Dose–Response Meta-analysis 坚持地中海饮食和2型糖尿病的风险:最新的系统评价和剂量反应荟萃分析
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-11-13 DOI: 10.1016/j.advnut.2025.100562
Sabina Wallerer , Julia Stadelmaier , Eike Floegel , Eva Kiesswetter , Gina Bantle , Georg Hoffmann , Lukas Schwingshackl

Background

Given the global rise in type 2 diabetes mellitus (T2D), the Mediterranean diet (MedDiet) has gained attention as a promising preventive dietary pattern.

Objectives

This study aims to update and extend our previous systematic review by synthesizing current evidence from randomized controlled trials (RCTs) and prospective cohort studies on the association between MedDiet adherence and incident T2D in adults, and to evaluate the certainty of evidence.

Methods

We conducted a systematic search in MEDLINE, Cochrane CENTRAL, and Scopus from 2014 to May 2025. Eligible studies were prospective cohorts reporting on the adherence to an a priori-defined MedDiet or, for RCTs, MedDiet intervention compared with any other diet and T2D incidence. Random-effects dose–response meta-analyses were performed to estimate hazard ratios (HRs) for MedDiet adherence score. Risk of bias was assessed using the Cochrane risk of bias tool 2 and the Risk Of Bias In Nonrandomized Studies—of Exposures tool, and the certainty of evidence was rated using the Grading of Recommendations Assessment, Development and Evaluation approach.

Results

A total of 24 prospective cohort studies and 1 RCT were included, comprising 991,878 participants and 68,325 T2D cases and a mean follow-up duration of 12.2 y (range: 3.5– 25 y). Higher MedDiet adherence is likely associated with a reduced risk of T2D [HRper 2-point increment: 0.92; 95% confidence interval (CI): 0.90, 0.94; moderate certainty]. The dose–response curve shows a consistent decline in T2D risk with higher adherence to MedDiet. The association remained robust over several subgroup analyses, including age, sex, and MedDiet score. The included RCT confirmed the main findings (HR: 0.75; 95% CI: 0.56, 1.01, low certainty).

Conclusion

This updated systematic review and meta-analysis provides moderate-certainty evidence that greater adherence to the MedDiet is associated with a lower risk of T2D. These findings reinforce current dietary guidelines recommending MedDiet as a sound strategy for T2D prevention.
背景:鉴于全球2型糖尿病(T2D)的上升,地中海饮食(MedDiet)作为一种有前景的预防饮食模式受到关注。目的:通过综合随机对照试验(RCTs)和前瞻性队列研究的现有证据,更新和扩展我们之前的系统综述,研究MedDiet依从性与成人T2D事件之间的关系,并评估证据的确定性。方法:对2014年至2025年5月在MEDLINE、Cochrane CENTRAL和Scopus中进行系统检索。符合条件的研究是前瞻性队列,报告了对先验定义的MedDiet的依从性,或者对于随机对照试验,将MedDiet干预与任何其他饮食和T2D发生率进行比较。进行随机效应剂量反应荟萃分析来估计MedDiet依从性评分的风险比(hr)。使用rob2和ROBINS-E评估偏倚风险,使用GRADE方法评估证据的确定性。结果:共纳入24项前瞻性队列研究和1项RCT,包括991 878名参与者和68 325例T2D病例,平均随访时间12.2年(范围:3.5至25年)。较高的MedDiet依从性可能与T2D风险降低相关(HRper 2点增量:0.92;95%CI: 0.90至0.94;中等确定性)。剂量-反应曲线显示,随着MedDiet依从性的提高,T2D风险持续下降。在包括年龄、性别和MedDiet评分在内的几个亚组分析中,这种关联仍然很强。纳入的RCT证实了主要发现(HR: 0.75; 95%CI: 0.56 ~ 1.01,低确定性)。结论:这项最新的系统评价和荟萃分析提供了中等确定性的证据,证明更坚持MedDiet与较低的T2D风险相关。这些发现加强了目前的饮食指南,推荐MedDiet作为预防糖尿病的合理策略。意义声明:本研究的目的是更新和扩展我们之前2015年关于坚持地中海饮食和糖尿病风险的系统综述和荟萃分析。本综述纳入了所有新发表的研究,应用了完善的荟萃分析和方法学技术,并使用GRADE方法对证据的确定性进行了评级。
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引用次数: 0
Efficacy of Iron-Rich Snacks in Improving Iron Status Among Adolescent Girls (10‒19 Years): A Systematic Review 富铁零食改善青春期女孩(10 - 19岁)铁状态的功效:一项系统综述。
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-10-29 DOI: 10.1016/j.advnut.2025.100549
Hope Masanja , Haikael D Martin , Theresia Jumbe , Wanjiku N Gichohi-Wainaina
Iron deficiency anaemia (IDA) is the most common form of anaemia and the leading cause of years lived with disabilities (YLD) and disability-adjusted life years (DALYs) among adolescents. Recently, various iron-rich snacks have been developed as interventions to improve iron status among adolescents. This review aimed to evaluate the efficacy of natural, non-commercially fortified iron-rich snacks in improving iron status among adolescent girls aged 10–19 years. A systematic review of randomized controlled trials and quasi-experiments was conducted, focusing on iron status indicators including hemoglobin (Hb), serum ferritin (SF), transferrin saturation (TSAT), and soluble transferrin receptors (sTfR). Searches were performed in PubMed, ScienceDirect, EBSCO, Research4Life, and Google Scholar. Risk of bias was assessed using Cochrane tools, and study quality was evaluated with GRADE. Ten studies (five RCTs and five quasi-experiments) involving 24 to 211 participants were included. Nine studies had moderate risk of bias, mainly due to performance, detection, and reporting issues; one had high selection bias. Iron content of snacks varied, with nine studies out of ten reported Hb increases ranging from 0.45 to 2.28 g/dL. Only one study reported improvements in serum iron (from 25.482 ± 0.036 g/dL to 41.511 ± 0.033 g/dL) and ferritin (from 10.827 ± 0.192 ng/mL to 14.016 ± 0.103 ng/mL). These results indicate the potential of locally developed snacks to improve iron and Hb levels in adolescents. This review synthesizes evidence on food-based interventions, focusing on natural, non-fortified iron-rich snacks for adolescent girls. The findings demonstrate promising potential for these snacks to improve iron status and haemoglobin concentrations, underscoring their value as culturally acceptable, cost-effective, and sustainable complement to existing nutrition strategies. Although results are promising, more rigorously designed trials with comprehensive iron biomarkers are needed to confirm efficacy and support integration into adolescent nutrition programs.
背景:缺铁性贫血(IDA)是最常见的贫血形式,也是青少年残疾生活年数(YLD)和残疾调整生命年数(DALYs)的主要原因。最近,各种富含铁的零食被开发出来作为改善青少年铁状况的干预措施。目的:本综述旨在评价天然、非商业强化的富含铁的零食在改善10-19岁少女铁状况方面的功效。方法:系统回顾随机对照试验和准实验,重点关注血红蛋白(Hb)、血清铁蛋白(SF)、转铁蛋白饱和度(TSAT)和可溶性转铁蛋白受体(sTfR)等铁状态指标。在PubMed, ScienceDirect, EBSCO, Research4Life和b谷歌Scholar中进行了搜索。使用Cochrane工具评估偏倚风险,使用GRADE评估研究质量。结果:共纳入10项研究(5项随机对照试验和5项准实验),涉及24 ~ 211名受试者。9项研究有中等偏倚风险,主要是由于表现、检测和报告问题;其中一个有很高的选择偏差。零食的铁含量各不相同,十项研究中有九项报告Hb增加范围为0.45至2.28 g/dL。只有一项研究报告了血清铁(从25.482±0.036 g/dL到41.511±0.033 g/dL)和铁蛋白(从10.827±0.192 ng/mL到14.016±0.103 ng/mL)的改善。这些结果表明,当地开发的零食有可能改善青少年的铁和血红蛋白水平。结论:本综述综合了基于食物的干预措施的证据,重点关注青春期女孩的天然、非强化富含铁的零食。研究结果表明,这些零食有改善铁状态和血红蛋白浓度的潜力,强调了它们作为文化上可接受的、具有成本效益的、可持续的补充现有营养策略的价值。虽然结果是有希望的,但需要更严格设计的综合铁生物标志物试验来证实其功效,并支持将其纳入青少年营养计划。注册:该综述方案已在国际前瞻性系统评价注册(PROSPERO)数据库注册(CRD42023404052)。
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引用次数: 0
The Associations of General, Central, Visceral Obesity, and Body Fat Percentage with Cognitive Impairment in the Elderly: Meta-analysis and Mendelian Randomization Study 老年人全身性、中枢性、内脏性肥胖和体脂率与认知障碍的关系:荟萃分析和孟德尔随机化研究。
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-11-03 DOI: 10.1016/j.advnut.2025.100550
Duoduo Lu , Xiang Ji , Yu An , Huiyuan Liu , Gang Zheng , Yashu Liu , Honghao Yang , Yuhong Zhao , Lu Zhao , Yang Xia
It is unclear whether various obesity phenotypes are differently associated with cognitive disorders. The aim of this study was to examine the associations of general obesity [measured by body mass index (BMI)], central obesity [measured by waist circumference (WC), waist-to-hip ratio (WHR)], or body fat percentage (BFP), and visceral obesity with cognitive disorders in older adults using meta-analysis and Mendelian randomization (MR) approaches. We identified observational studies published from the inception of 4 (PubMed, Embase, Medline, and Web of Science) databases until November 2024. A random-effects model was employed to construct the pooled odds ratio (OR) and 95% confidence interval (CI) for exploring the associations of general, central, and visceral obesity with cognitive impairment. The mean, median, or range age of participants is ≥60 y. Subsequently, a 2-sample MR analysis was performed using genetic variation data to investigate the potential causal relationships of general, central, and visceral obesity with cognitive impairment. A total of 70 studies comprising 2,810,410 participants were included. In meta-analysis, general obesity (measured by BMI) showed an inverse association with cognitive disorders. Compared with normal BMI, the pooled ORs (95% CIs) were 1.29 (1.21, 1.38) for underweight, 0.87 (0.84, 0.90) for overweight, and 0.88 (0.85, 0.91) for obesity. In contrast, no significant association was observed for central obesity (WC or WHR) or visceral obesity. Subgroup analyses by sex, study design, region, and disease type produced results consistent with the overall findings. In MR analyses, higher BMI, BFP, WC, and WHR were associated with a reduced risk of cognitive impairment, with WHR also inversely related to mild cognitive impairment. No causal association was observed for dementia or Alzheimer’s disease. The research results indicate that there might be a negative correlation between obesity (especially generalized obesity) and cognitive impairment in the elderly.
背景:目前尚不清楚不同的肥胖表型是否与认知障碍有不同的关联。本研究的目的是通过荟萃分析和孟德尔随机化(MR)方法,研究老年人一般肥胖(以体重指数[BMI]测量)、中心性肥胖(以腰围[WC]、腰臀比[WHR]测量)或体脂率(BFP)和内脏肥胖与认知障碍之间的关系。方法:我们确定了从四个数据库(PubMed, Embase, Medline和Web of Science)开始到2024年11月发表的观察性研究。采用随机效应模型构建合并优势比(OR)和95%置信区间(CI),探讨全身性、中枢性和内脏性肥胖与认知障碍的关系。参与者的平均、中位数或年龄范围为60岁及以上。随后,利用遗传变异数据进行了两样本磁共振分析,以调查全身性、中枢性和内脏性肥胖与认知障碍的潜在因果关系。结果:共纳入70项研究,包括2,810,410名受试者。在荟萃分析中,一般肥胖(由BMI测量)与认知障碍呈负相关。与正常BMI相比,体重过轻组的合并or (95% ci)为1.29(1.21-1.38),超重组为0.87(0.84-0.90),肥胖组为0.88(0.85-0.91)。相反,没有观察到中心性肥胖(WC或WHR)或内脏肥胖的显著关联。按性别、研究设计、地区和疾病类型进行的亚组分析得出的结果与总体发现一致。在MR分析中,较高的BMI、BFP、WC和腰宽比与认知障碍风险降低相关,腰宽比也与轻度认知障碍呈负相关。没有观察到痴呆或阿尔茨海默病的因果关系。结论:研究结果提示老年人肥胖(尤其是全身性肥胖)与认知功能障碍可能存在负相关关系。
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引用次数: 0
Upstream Interventions in Clinical Settings Focused on Nutrition to Prevent Obesity During the First 1000 Days: A Scoping Review 临床环境中的上游干预措施侧重于前1000天的营养预防肥胖:范围综述1。
IF 9.2 1区 医学 Q1 NUTRITION & DIETETICS Pub Date : 2025-12-01 Epub Date: 2025-10-09 DOI: 10.1016/j.advnut.2025.100529
Courtney T Luecking , Chelsea L Kracht , Mackenzie J Ferrante , Kameron J Moding , Elizabeth Kielb , Laura J Rolke , Brooke E Wagner , Jordan Colella , Katherine E Speirs , Cayla Robinson , Cody D Neshteruk
Nutritional exposures during pregnancy and the first 2 y of a child’s life influence growth and risk for obesity. Upstream interventions that involve policy, systems, and/or environmental approaches may support equitable nutrition and healthy growth early in life. Yet little is known about the application of these interventions in clinical settings. This scoping review characterized the breadth, generalizability, and methodological rigor of nutrition-focused, upstream interventions for obesity prevention during the first 1000 d in clinical settings. Eight databases were searched in November 2022 for policy, systems, and/or environmental approaches conducted during the first 1000 d. Titles, abstracts, and full texts were independently screened in duplicate, with conflicts resolved by a third reviewer. Extracted elements included study characteristics, reach, effectiveness, adoption, implementation, maintenance, and the Downs and Black study quality checklist. Of the 73,969 records identified, 185 reports representing 126 studies were included. Studies frequently involved combinations of system (98%), environmental (56%), and/or individual (87%) approaches in prenatal care (35%), hospital (22%), or primary care (21%) settings. Over half (62%) were conducted with socially disadvantaged families. More studies reported positive effects on feeding practices (71%), child diet (70%), breastfeeding (67%), and maternal diet (62%), compared with child (31%) or maternal (48%) weight and growth outcomes. Variation in outcome reporting and measurement limited the ability to make conclusions regarding effectiveness. Maintenance of upstream approaches was seldom reported. Study quality ranged from poor to good. Results suggest the promise of scaling adoption of policy, systems, and/or environmental approaches that enhance standard clinical care by incorporating nutrition-focused elements to support healthy feeding behaviors and growth. To achieve equitable nutrition and healthy growth early during the first 1000 d, implementation and evaluation of upstream policy efforts that integrate social and health care within and in collaboration with agencies beyond clinical settings may be warranted.
This trial was registered at Open Science Framework Registry as osf.io/bqck5 (https://doi.org/10.17605/OSF.IO/SXZMK).
怀孕期间和儿童生命最初两年的营养暴露会影响生长和肥胖的风险。涉及政策、系统和/或环境方法的上游干预措施可支持生命早期的公平营养和健康成长。然而,人们对这些干预措施在临床环境中的应用知之甚少。这一范围综述的特点是在临床环境的前1000天内,以营养为重点的预防肥胖的上游干预措施的广度、普遍性和方法的严谨性。2022年11月,对八个数据库进行了检索,以查找前1000天内实施的政策、系统和/或环境方法。题目、摘要和全文一式两份独立筛选,冲突由第三审稿人解决。提取的要素包括研究特征、覆盖范围、有效性、采用、实施、维护,以及Downs和Black研究质量检查表。在确定的73969份记录中,包括185份报告,代表126项研究。研究经常涉及产前护理(35%)、医院(22%)或初级保健(21%)设置中的系统(98%)、环境(56%)和/或个人(87%)方法的组合。超过一半(62%)是在社会弱势家庭进行的。与儿童体重和生长结果(31%)或母亲体重和生长结果(48%)相比,更多的研究报告对喂养方法(71%)、儿童饮食(70%)、母乳喂养(67%)和母亲饮食(62%)产生了积极影响。结果报告和测量的差异限制了对有效性得出结论的能力。上游方法的维护很少被报道。学习质量有好有坏。研究结果表明,通过纳入以营养为重点的元素来支持健康的喂养行为和生长,从而加强标准临床护理的政策、系统和/或环境方法的大规模采用有望实现。为了在头1 000天的早期实现公平营养和健康成长,可能有必要执行和评估上游政策努力,在临床环境之外的机构内部和与之合作,将社会保健和保健结合起来。综述注册:开放科学框架注册,osf。io / bqck5, https://doi.org/10.17605/OSF.IO/SXZMK。
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Advances in Nutrition
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