The effects of ursodeoxycholic acid on cardiometabolic risk factors: a systematic review and meta-analysis of randomized controlled trials

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BACKGROUND: Chronic diseases such as obesity, hypertension, and metabolic syndrome are major health concerns worldwide. Ursodeoxycholic acid (UDCA) is a bile acid that is naturally produced in the liver and has been used for the treatment of various liver disorders. In this systematic review and meta-analysis, we investigated how UDCA might affect inflammation, blood pressure, and obesity. METHODS: Five major databases were searched from inception to August 2024. The investigated outcomes included body mass index (BMI), systolic blood pressure (SBP), diastolic blood pressure (DBP), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α). A random effect was carried out to estimate pooled weighted mean difference (WMD) with 95% confidence intervals (CI). The registration code is CRD42023428064. RESULTS: , 95% CI: -0.58, -0.01, P = 0.044), and DBP (WMD: -2.16 mmHg, 95% CI: -3.66, -0.66, P = 0.005). It also increased SBP (WMD: 5.50 mmHg, 95% CI: 3.65, 7.35, P < 0.001); however, it was not associated with weight loss (WMD: -0.3 kg, 95% CI: -1.3, 0.71, P = 0.561). Our systematic review showed that UDCA consumption has no effect on IL-6 and TNF-α. CONCLUSION: This systematic review and meta-analysis suggest that UDCA supplementation may improve BMI and DBP, whereas it may increase SBP and have no effect on weight or inflammation. Further long-term and well-designed RCTs are needed to further assess and confirm these results.

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