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Integr Med Res. 2019 Mar;8(1):57-61. doi: 10.1016/j.imr.2018.07.004. Epub 2018 Jul 27.

Efficacy of curcumin/turmeric on liver enzymes in patients with non-alcoholic fatty liver disease: A systematic review of randomized controlled trials.

Author information

1
Gastrointestinal & Liver Diseases Research Center (GLDRC), Guilan University of Medical Sciences (GUMS), Rasht, Iran.
2
Caspian Digestive Diseases Research Center, Guilan University of Medical Sciences (GUMS), Rasht, Iran.

Abstract

Background:

Several studies reported that curcumin supplementation could improve non-alcoholic fatty liver disease (NAFLD). The aim of this study was to evaluate the efficacy of curcumin/turmeric supplementation on liver enzymes in patients with NAFLD.

Methods:

PubMed, Scopus, Web of Science and Google Scholar were systematically searched until December 2017. We included randomized controlled trials (RCTs) which examined effect of curcumin/turmeric supplementation on NAFLD in adult participants. Main outcome was alanine aminotransferase (ALT) and aspartate aminotransferase (AST). Potential risks of bias (ROB) were assessed by using Cochrane ROB tool.

Results:

All included studies showed low ROB in most of item of Cochrane ROB tool. Meta-analysis of 4 randomized controlled trials including 228 subjects showed a trend toward significant reduction of ALT blood concentrations in subgroup with ≥1000 mg/day curcumin supplementation (-11.36 IU/L, 95% CI: -22.75 to 0.02; I 2:51%). Meta-analysis showed a significant reduction of AST in studies with 8-weeks administration (-9.22 IU/L, 95% CI: -12.77 to -5.67; I 2: 49%).

Conclusion:

This review suggests that curcumin/turmeric might have a favorable effect on NAFLD in higher dosage. Further high-quality studies with large-scale and higher dosage are warranted.

KEYWORDS:

Alanine transaminase; Aspartate aminotransferases; Curcumin; Meta-analysis; Non-alcoholic fatty liver

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