*Limitations*

One of the studies included [32] was a pilot study with a small sample size. Furthermore, the number of studies included in the meta-analyses was eight or smaller in the different parameters. These could affect the broader application of the findings of the review. Therefore, more studies are required to further explore the role of almonds in patients with type 2 diabetes.

### **6. Conclusions**

The findings of this systematic review and meta-analysis have shown that almondbased diets may be effective in promoting short-chain fatty acid-producing bacteria, and lowering glycated haemoglobin and body mass index in patients with type 2 diabetes compared with control. However, the effects of almonds were not significant (*p* > 0.05) with respect to fasting blood glucose, 2 h postprandial blood glucose, inflammatory markers (C-reactive protein and TNF-α), GLP-1, HOMA–IR, and fasting insulin.

**Author Contributions:** Conceptualization, O.O. and O.O.O.; methodology, O.O., X.-H.W. and O.O.O.; A.R.A.A.; validation, O.O., X.-H.W., O.O.O. and A.R.A.A.; formal analysis, O.O.; writing—original draft preparation, O.O.; writing—review and editing, O.O., X.-H.W., O.O.O. and A.R.A.A. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Conflicts of Interest:** The authors declare no conflict of interest.
