Abstract
BACKGROUND: Type 2 diabetes mellitus (T2DM) is an ensemble of metabolic diseases that has reached pandemic dimensions all over the world. There is a lack of evidence on the contribution of curcumin in the treatment of T2DM. We conducted a protocol for systematic review and meta-analysis to evaluate whether curcumin supplementation is effective and safe in T2DM patients. METHODS: The systematic review will follow the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-analyses Protocols (PRISMA-P). We will obtain studies through PubMed, Cochrane Library, Embase, Web of Science, and Medline databases. In addition, we will also collect 4 databases of China: China National Knowledge Infrastructure, China Biomedical Literature Database, China Science Journal Database, and Wan-fang Database. Eligible study conference abstracts and reference lists of manuscripts will be searched. The data collection and analysis will be conducted independently by 2 reviewers. Meta-analysis will be performed using Review Manager software, version 5.3 (Update Software Ltd, Oxford, Oxon, UK). RESULTS: The results of this systematic review and meta-analysis will be published in a peer-reviewed journal. CONCLUSION: The findings of this systematic review may encourage supplementation of curcumin and its preparation specifically in T2DM patients. Nevertheless, the application of curcumin supplementation in clinical practice should be taken with individual's contributing factors.