Trial reportJournal of the American Board of Family Medicine : JABFM
Effectiveness of cinnamon for lowering hemoglobin A1C in patients with type 2 diabetes: a randomized, controlled trial.
Trial report in Journal of the American Board of Family Medicine : JABFM. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It reports registered trial NCT05343767. Cited by 87 papers, 9 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Phase II, Randomized, Double Blind, Double Dummy, Active-Controlled Clinical Trial to Investigate the Efficacy and Safety of Low-Glu in Patients Newly Diagnosed With Type II Diabetes Mellitus
Evaluation of the Effect of Cinnamomum Zeylanicum on Glycemic Levels of Mexican Adult Patients With Type 2 Diabetes at 3 Months: Randomized Clinical Trial
Who cites it
87 citing papers in PubMed, 9 syntheses or guidelines pooled it.
- The effect of cinnamon supplementation on cardiovascular risk factors in adults: a GRADE assessed systematic review, dose-response and meta-analysis of randomized controlled trials.Journal of health, population, and nutrition · 2025Pooled it
- The effects of cinnamon on patients with metabolic diseases: an umbrella review of meta-analyses of randomized controlled trials.Frontiers in nutrition · 2025Pooled it
- Pooled it
- Pooled it
- Efficacy of cinnamon supplementation on glycolipid metabolism in T2DM diabetes: A meta-analysis and systematic review.Frontiers in physiology · 2022Pooled it
- Effectiveness and Safety of Ayurvedic Medicines in Type 2 Diabetes Mellitus Management: A Systematic Review and Meta-Analysis.Frontiers in pharmacology · 2022Pooled it
- Cinnamon for diabetes mellitus.The Cochrane database of systematic reviews · 2012Pooled it
- Ayurvedic treatments for diabetes mellitus.The Cochrane database of systematic reviews · 2011Pooled it
- Cinnamon use in type 2 diabetes: an updated systematic review and meta-analysis.Annals of family medicinePooled it
- The Effect of Therapeutic Doses of Culinary Spices in Metabolic Syndrome: A Randomized Controlled Trial.Nutrients · 2024Trial
- Trial
- Effect of Aqueous Cinnamon Extract on the Postprandial Glycemia Levels in Patients with Type 2 Diabetes Mellitus: A Randomized Controlled Trial.Nutrients · 2022Trial
- Trial
- Effects of Cinnamon Consumption on Glycemic Indicators, Advanced Glycation End Products, and Antioxidant Status in Type 2 Diabetic Patients.Nutrients · 2017Trial
- Effect of oral cinnamon intervention on metabolic profile and body composition of Asian Indians with metabolic syndrome: a randomized double -blind control trial.Lipids in health and disease · 2017Trial
- Effect of Cosmos caudatus (Ulam raja) supplementation in patients with type 2 diabetes: Study protocol for a randomized controlled trial.BMC complementary and alternative medicine · 2016Trial
- Trial
- Trial
- Cassia cinnamon does not change the insulin sensitivity or the liver enzymes in subjects with impaired glucose tolerance.Nutrition journal · 2014Trial
- Integrative Medicine for Patients with Diabetes and Mental Health Disorders: A Narrative Review.Current psychiatry reports · 2025Review
27 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
1 author.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeMultiple trials in the past have shown conflicting results of whether cinnamon lowers glucose or hemoglobin A1C (HbA1C). The purpose of this study was to determine whether cinnamon lowers HbA1C in patients with type 2 diabetes. I performed a randomized, controlled trial to evaluate whether daily cinnamon plus usual care versus usual care alone lowers HbA1c.
methodsI randomized 109 type 2 diabetics (HbA1C >7.0) from 3 primary care clinics caring for pediatric, adult, and geriatric patients at a United States military base. Participants were randomly allocated to either usual care with management changes by their primary care physician or usual care with management changes plus cinnamon capsules, 1g daily for 90 days. HbA1c was drawn at baseline and 90 days and compared with intention-to-treat analysis. This study was approved by an institutional review board.
resultsCinnamon lowered HbA1C 0.83% (95% CI, 0.46-1.20) compared with usual care alone lowering HbA1C 0.37% (95% CI, 0.15-0.59).
conclusionsTaking cinnamon could be useful for lowering serum HbA1C in type 2 diabetics with HbA1C >7.0 in addition to usual care.
Indexed as
Identifiers
19734396What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.