Context: : Aloe vera is a traditional medicinal plant that shows a wide range of biological activities. Previous studies demonstrated the antihyperglycemic effect of Aloe vera but with inconsistent results. Aims: To quantitatively summarize the effect of Aloe vera on fasting blood glucose in pre-diabetes and type 2 diabetes mellitus by a meta-analysis. Methods: PubMed, Scopus, Springer Link,…