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© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Background: Type 2 Diabetes (T2D) is increasingly becoming a critical healthcare priority globally. Medical interventions are primary strategies for managing diabetes, but more recently, diet/nutrition therapy, including the use of functional food products such as cinnamon and/or cinnamon products, has garnered considerable attention. The focus of this systematic review and meta-analysis is to examine whether cinnamon improves blood glucose parameters, body mass index, and inflammatory markers in people with T2DM. Method: PRISMA and PICOS frameworks were used for the review. EBSCOhost was used to search for relevant literature in health science research databases, while EMBASE and reference lists were used to access other relevant articles. Results: For systematic review and meta-analysis, 14 and 12 studies, respectively, were included (five from Iran, two each from the USA and India, and one each from the UK, China, Germany, Portugal, and Iraq). All participants had T2DM with ages ranging from ≥30–65 years. The effect of cinnamon on glycaemic control and other parameters did not follow a regular pattern. Effect on HbA1c (nine studies and 605 participants; MD of −0.07 (95% CI, −0.13, −0.01, p = 0.02), postprandial blood glucose (PBG) and BMI showed significant (p < 0.05) reductions. However, cinnamon exhibited no significant (p > 0.05) impact on FBG (MD of −1.73 (95% CI, −3.98, 0.52, p = 0.13), CRP, TNF-α, and IL-6 in people with T2D; neither did the sensitivity test reveal any change in relation to these parameters. Conclusions: Cinnamon or cinnamon extracts/products are significantly effective in diabetes management through reduction in HbA1c, PBG, and BMI.

Details

Title
Cinnamon Improves Glycated Haemoglobin and Body Mass Index, but Not Inflammatory Parameters in Patients with Type 2 Diabetes: Evidence from a Systematic Review and Meta-Analysis of Randomised Controlled Trials
Author
Ojo, Omorogieva 1   VIAFID ORCID Logo  ; Otunola, Gloria Aderonke 2 ; Omotayo Rebecca Oshungade 3   VIAFID ORCID Logo  ; Beverly, Joshua 1 

 School of Health Sciences, Faculty of Education, Health and Human Sciences, University of Greenwich, Avery Hill Campus, London SE9 2UG, UK; [email protected] 
 Department of Chemistry, Faculty of Science, National Open University of Nigeria, Abuja 900107, Nigeria; [email protected] 
 School of Nursing and Public Health, University of Kwazulu-Natal, Durban 4001, South Africa; [email protected] 
First page
3
Publication year
2025
Publication date
2025
Publisher
MDPI AG
e-ISSN
2673396X
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3181448771
Copyright
© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.