Date Fruit Effects in Type 2 Diabetes

Type2 Diabetes Clinical Trial

Official title:

Effect of Date Fruit Phytoestrogen on the Glycemic Control of Patients With Type 2 Diabetes: A Randomized Clinical Trial.

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04616066
• Other study ID #: 89 / 25-Oct-2020
• Status: Completed
• Phase: N/A
• Start date: October 10, 2021
• Est. completion date: May 30, 2022

Study information

• Verified date: October 2022
• Source: Royal College of Surgeons in Ireland - Medical University of Bahrain
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Dried dates (Phoenix dactylifera) have the second highest phytoestrogen content of any fruit, only secondary to dried apricots with 329ug of phytoestrogens per 100g. The date palm is one of oldest planted trees on the earth at around 2,000 years old. Dates are nutritionally rich and a good source of fiber and carbohydrates and their potential medicinal and nutritional effects have been suggested in a number of studies. Date sugars have also been shown to be phenol rich, potent antioxidant, and strong inhibitor of α -glycosidase that may also have benefit in diabetes. In addition, dates are rich in micronutrients that may also have benefit for diabetes and insulin resistance . Dates have a glycemic index of 50 and studies have shown that the consumption of differing varieties of dates do not significantly affect the acute glycemia in patients with type 2 diabetes.

The objective of this study is to investigate the effect of date phytoestrogens on HbA1C and fasting blood glucose in patients with type 2 diabetes in comparison to the same glycemic load of raisins that have low phytoestrogen content.

Description:

Production and consumption of soy foods within Western countries have increased dramatically in the last decade with the postulated health benefits including improvement in bone health, relief of menopausal symptoms and reduced risk of certain types of cancers due to the soy phytoestrogens. In addition, habitual intake of soy phytoestrogens has also been associated with a reduced risk of type 2 diabetes mellitus (T2DM) and cardiovascular disease (CVD), which is of particular relevance given the increasing global prevalence of diabetes. This is a particular problem here in the Middle East and North Africa (MENA) region, where diabetes is considered as a serious and increasing health problem. According to the International Diabetes Federation the prevalence of diabetes in the MENA region is over 23.3%; however worldwide there is an epidemic increase in type 2 diabetes with the WHO report that approximately 415 million people have diabetes worldwide, and that by 2030, diabetes will be the 7th leading cause of death.

Dried dates (Phoenix dactylifera) have the second highest phytoestrogen content of any fruit, only secondary to dried apricots with 329ug of phytoestrogens per 100g. The date palm is one of oldest planted trees on the earth at around 2,000 years old. Dates are nutritionally rich and a good source of fiber and carbohydrates and their potential medicinal and nutritional effects have been suggested in a number of studies. Date sugars have also been shown to be phenol rich, potent antioxidant, and strong inhibitor of α -glycosidase that may also have benefit in diabetes. In addition, dates are rich in micronutrients that may also have benefit for diabetes and insulin resistance. Dates have a glycemic index of 50 and studies have shown that the consumption of differing varieties of dates do not significantly affect the acute glycemia in patients with type 2 diabetes.

There has not been a medium term study of the effect of date fruit in diabetes; therefore, this study will determine if the consumption Khalas dates (3 dates =30g undried dates) twice daily (phytoestrogen content 329ug/100g), in accord with that advised in the Holy Qur'an, will improve the glycemic control in men with type 2 diabetes, in comparison with the equivalent glycemic load of raisins (30g twice daily, phytoestrogen content of 9.6ug/100g). Each intervention will be taken as a snack mid-morning and mid-afternoon.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 79
• Est. completion date: May 30, 2022
• Est. primary completion date: April 30, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 45 Years to 75 Years

Eligibility

Inclusion Criteria:

• The diagnosis of type 2 diabetes will be based on the WHO guidelines. An HbA1C of 6.5% or greater, or 2 fasting plasma glucose readings of >7.0mmoll-1 or 2 random plasma glucose readings >11mmoll-1 in the absence of symptoms or concurrent illness or medication which might lead to hyperglycaemia (e.g. thiazide diuretics). Or one reading meets the diagnostic level with the presence of symptoms of polyuria, polydipsia, nocturia, fatigue or blurring of vision. The final diagnostic method of diagnosis type 2 diabetes is a positive oral glucose tolerance test (OGTT) using a 75g glucose load. If doubt exists on the diagnosis of diabetes an OGTT will be performed.

• Patients will be on stable medication for their diabetes, hypertension, lipids and gout (if appropriate) for 3 months prior to entry into the study.

• HbA1c 7.5 - 10%

• Patients between the ages of 45-75 years at the start of the study.

• Capable to give informed consent and complete the study.

Exclusion Criteria:

• Patients with concurrent illness or any medication in the last 3 months.

• Patients who are taking hormone replacement therapy.

• Patients who are currently or have taken antibiotics in the last 3 months.

• Currently enrolled in other clinical trials.

• Hba1c at recruiting stage of more than 10%.

• Patients with a BMI less than 20 and more than 40.

• Patients with known food allergies.

• Patients on insulin.

• Patients who are eating dates or raisins should be washed out for 4 weeks.

• Pregnant or nursing, or plans to become pregnant in the next 3 months, or not using adequate contraceptive measures.

Related Conditions & MeSH terms

• Diabetes Mellitus
• Diabetes Mellitus, Type 2
• Type2 Diabetes

Intervention

Other:
• Dates
The effect of date phytoestrogens on HbA1C and fasting blood glucose in patients with type 2 diabetes
• Raisins
The effect of raisins phytoestrogens on HbA1C and fasting blood glucose in patients with type 2 diabetes

Locations

Country	Name	City	State
Bahrain	Royal College of Surgeons in Ireland - Bahrain	Manama

Sponsors (2)

Lead Sponsor	Collaborator
Royal College of Surgeons in Ireland - Medical University of Bahrain	King Hamad University Hospital, Bahrain

Country where clinical trial is conducted

Bahrain, 

References & Publications (12)

Alkaabi J, Al-Dabbagh B, Saadi H, Gariballa S, Yasin J. Effect of traditional Arabic coffee consumption on the glycemic index of Khalas dates tested in healthy and diabetic subjects. Asia Pac J Clin Nutr. 2013;22(4):565-73. doi: 10.6133/apjcn.2013.22.4.09. — View Citation

Alkaabi JM, Al-Dabbagh B, Ahmad S, Saadi HF, Gariballa S, Ghazali MA. Glycemic indices of five varieties of dates in healthy and diabetic subjects. Nutr J. 2011 May 28;10:59. doi: 10.1186/1475-2891-10-59. — View Citation

Hamad I, AbdElgawad H, Al Jaouni S, Zinta G, Asard H, Hassan S, Hegab M, Hagagy N, Selim S. Metabolic Analysis of Various Date Palm Fruit (Phoenix dactylifera L.) Cultivars from Saudi Arabia to Assess Their Nutritional Quality. Molecules. 2015 Jul 27;20(8):13620-41. doi: 10.3390/molecules200813620. — View Citation

Jayagopal V, Albertazzi P, Kilpatrick ES, Howarth EM, Jennings PE, Hepburn DA, Atkin SL. Beneficial effects of soy phytoestrogen intake in postmenopausal women with type 2 diabetes. Diabetes Care. 2002 Oct;25(10):1709-14. — View Citation

Knol MJ, Groenwold RH, Grobbee DE. P-values in baseline tables of randomised controlled trials are inappropriate but still common in high impact journals. Eur J Prev Cardiol. 2012 Apr;19(2):231-2. — View Citation

Miller CJ, Dunn EV, Hashim IB. The glycaemic index of dates and date/yoghurt mixed meals. Are dates 'the candy that grows on trees'? Eur J Clin Nutr. 2003 Mar;57(3):427-30. — View Citation

Senn S. Testing for baseline balance in clinical trials. Stat Med. 1994 Sep 15;13(17):1715-26. — View Citation

Senn SJ. Covariate imbalance and random allocation in clinical trials. Stat Med. 1989 Apr;8(4):467-75. — View Citation

Thompson LU, Boucher BA, Liu Z, Cotterchio M, Kreiger N. Phytoestrogen content of foods consumed in Canada, including isoflavones, lignans, and coumestan. Nutr Cancer. 2006;54(2):184-201. — View Citation

Vayalil PK. Date fruits (Phoenix dactylifera Linn): an emerging medicinal food. Crit Rev Food Sci Nutr. 2012;52(3):249-71. doi: 10.1080/10408398.2010.499824. Review. — View Citation

Xiao CW. Health effects of soy protein and isoflavones in humans. J Nutr. 2008 Jun;138(6):1244S-9S. Review. — View Citation

Xu SZ, Zeng B, Daskoulidou N, Chen GL, Atkin SL, Lukhele B. Activation of TRPC cationic channels by mercurial compounds confers the cytotoxicity of mercury exposure. Toxicol Sci. 2012 Jan;125(1):56-68. doi: 10.1093/toxsci/kfr268. Epub 2011 Oct 9. — View Citation

* Note: There are 12 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The effect of phytoestrogens on HbA1C and fasting blood glucose in patients with type 2 diabetes	Measuring the levels of phytoestrogen and evaluate if it has reduced the average blood sugar levels over a period of 3 months.	90 days
Secondary	Determine whether date phytoestrogens affect cardiovascular risk	Determine whether the level of phytoestrogens has lowered risks of cardiovascular disease by measuring the fasting lipids, C reactive protein and blood pressure.	90 days
Secondary	Determine whether date phytoestrogens affect insulin resistance	Homeostatic model assessment (HOMA) is a method for assessing ß-cell function and insulin resistance (IR) from basal (fasting) glucose and insulin or C-peptide concentrations.	90 days