Is There a Metabolic Effect of Cinnamon on HbA1c, Blood Pressure and Serum Lipids in Type 2 Diabetes Mellitus?

Phase 2

Completed

• Conditions: Type 2 Diabetes Mellitus
• Interventions: Dietary Supplement: cinnamon 2g per day for 12 weeks

• Registration Number: NCT00846898
• Lead Sponsor: Thames Valley University

Brief Summary

The aim of the study is to assess whether dietary supplementation of cinnamon (cinnamon cassia) has the potential to improve HbA1c, blood pressure and serum lipid measurements in patients with type 2 diabetes mellitus.

Detailed Description

The study will be conducted for 3 months (12 weeks) with 58 individuals diagnosed with type 2 diabetes mellitus. The randomisation will be carried out by using a randomisation list. Cinnamon bark (cinnamon cassia) and starch flour (placebo) capsules will be purchased from a local pharmaceutical company in UK; these are freely available for over the counter use. Each capsule contained either 500 mg of cinnamon powder or starch flour. The cinnamon and placebo (starch flour) capsules will be packaged in a non transparent plastic bags.

The patients will be randomly allocated into the two groups of:

Group 1: placebo control group Group 2: cinnamon group

Patients in both placebo and cinnamon groups will receive treatment similar to the treatment they would normally receive from their respective NHS or primary care trust for 12 weeks.

Data collection:

After the randomisation the subjects will be scheduled to visit the clinic at 0 weeks, 6 - 7 weeks and 12 weeks from the beginning of the study. During every visit (week 0, weeks 6 - 7 and week 12) a 3-day diet diary will be collected and the intake of total calories, fats, carbohydrates, proteins and fibre will be determined. Compliance with the diet will be monitored by individual discussions at each clinical visit with dietician and compared with the diet diary. The anthropometric measurements of body weight, height, waist and hip circumferences will be measured before the trial (week 0), during the trial (weeks 6 - 7) and after the trial (week 12) period. The recorded clinical measurements of blood profiles include HbA1c level, fasting plasma glucose concentration and serum lipid profiles including serum total cholesterol, high density lipoprotein (HDL), low density lipoprotein (LDL) and serum triglycerides, systolic and diastolic blood pressures will be measured at the baseline (week 0) and at 12 weeks during the study period.

Study Timeline

• Study Start: 2008-03
• Primary Completion: 2009-01
• Status Verified: 2009-02
• Study Completion: 2009-02
• Study First Submitted: 2009-02-18
• Study First Submitted QC: 2009-02-18
• Study First Posted: 2009-02-19
• Last Update Submitted: 2011-11-11
• Last Update Posted: 2011-11-14

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 58

Inclusion Criteria

1. Patients diagnosed with type 2 diabetes mellitus
2. Aged over 18 years, either sex
3. HbA1c level more than 7%
4. Patients treated only with oral anti-diabetic drugs or diet

Exclusion Criteria

1. Patients with severe health problems including renal disease, liver disease, cardiovascular disease and other chronic ill health conditions
2. Patients with mental health problems
3. Patients treated with insulin therapy
4. Patients refused to give informed consent
5. Pregnant and lactating women
6. Patients taking cinnamon supplements and other herbal supplements known to be effective

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
cinnamon	cinnamon 2g per day for 12 weeks	Subjects in this group will receive cinnamon capsules for 12 weeks period. The 2 g dose of cinnamon will be spread over the day as 500 mg (1 capsule) after breakfast, 1000 mg (2 capsules) after lunch and 500 mg (1 capsule) after dinner. The subjects will be instructed to take the capsules immediately after the meals.
Control	cinnamon 2g per day for 12 weeks	Subjects in this group will receive placebo capsules (starch flour) for 12 weeks period. The 2 g dose of starch capsules will be spread over the day as 500 mg (1 capsule) after breakfast, 1000 mg (2 capsules) after lunch and 500 mg (1 capsule) after dinner. The subjects will be instructed to take the capsules immediately after the meals.

Primary Outcome Measures

Name	Time	Method
HbA1c	3 months

Secondary Outcome Measures

Name	Time	Method
Plasma glucose concentration Plasma lipid profiles (HDL, LDL, Triglycerides and total cholesterol) systolic and diastolic blood pressures. Body Mass Index. Waist circumference. Total calorie intake.	3 months

Trial Locations

Locations (1)

Brent teaching Primary Care trust (NHS); 🇬🇧 Wembley, London, United Kingdom