The Association Between Gallstone Disease and Metabolic Syndrome Related Abnormalities: A Systematic Review and Meta-Analysis

BackgroundBile excretion is one of an important metabolite excretion pathway of human body. In recent years, it has been reported that metabolic diseases are associated with the occurrence of GSD (Gallstone Disease). The main purpose of this systematic review is to examine the relationship between metabolic syndrome and cholelithiasis, including components of the metabolic syndrome such as abnormal blood glucose regulation, hyperlipidemia, and obesity.MethodsPubmed, Cochrane library and embase were searched for all English language articles for the following relevant keywords: Metabolic Syndrome, Reaven Syndrome X, Biliary Calculi, Cholelithiasis Gallstones. Case-control study, cross-sectional study and cohort study were included .Pooled relative risks (RRs) or odds ratios (ORs) and their corresponding 95% confidence intervals (CIs) were calculated. The pooled mean differences of the outcome measures were compared between patients with and without MetS.ResultsAfter screening, a total of 5 cross-sectional studies and 1 cohort studies were included in the meta-analysis. The 6 studies evaluated a total of 49101 people，of whom 9055 had MS and 2308 had GSD. There is a significant correlation between MS and GSD (z=6.65, p = 0.000), and it’s more significant in female. All studies displayed increasing odds of GSD with increasing number of MetS traits, where patients with three or more MetS traits tended to have a higher prevalence of nephrolithiasis.ConclusionsOur review shows a definite association of MetS with GSD, and the more the components of MetS, the higher the prevalence of GSD. Although not as obvious as women, men also support this conclusion.