Maternal folic acid supplementation to prevent preeclampsia: a systematic review and meta-analysis.

Objective: The purpose of this systematic review was to examine the association between folic acid supplementation during pregnancy and the risk of preeclampsia.

Methods: Relevant studies were included by searching Embase, PubMed, Scope, Web of science, Cochrane Library databases. Studies were reviewed according to prespecified inclusion and exclusion criteria.

Prospective Nested Case-Control Study of Dietary and Microbiological-Associated Levels and Dynamics of 5-Aminovaleric Acid Betaine (5-AVAB) in Patients with Type 2 Diabetes.

Objective: This study aimed to evaluate the associations between dietary and microbiological factors, and the levels and dynamics of 5-amino valeric acid betaine (5-AVAB) in patients with type 2 diabetes (T2D) through a prospective nested case-control study. An added meta-analysis aimed to provide a comprehensive evaluation of the relationship between 5-AVAB levels and T2D risk.

Methods: A total of 1200 T2D patients and 1200 age- and sex-matched controls were recruited for this study.

Effects of Tai chi in knee osteoarthritis patients: An overview of systematic reviews and meta-analyses.

Objective: Tai Chi (TC) is a complementary therapy for knee osteoarthritis (KOA). Although systematic reviews (SRs) and meta-analyses (Mas) of efficacy studies have been published, the results remain uncertain, and their quality has not yet been fully evaluated. Here, we summarize the existing SRs/Mas, evaluate their quality and level of evidence, and provide a reference for the effectiveness of TC.