Summary Dates, rich in simple sugars, fiber, and antioxidant polyphenols, have a variable glycemic index and conflicting reported effects on type 2 diabetes. Moderate consumption might raise glycemia if added to the usual diet, but could improve insulin sensitivity and oxidative balance if used as an isocaloric substitute. This prospective, interventional, single-center study (Endocrinology Department., La Rabta Hospital, Tunis) aims to evaluate the effect of daily consumption of 3 Deglet Nour dates for 8 weeks on glycemic control and oxidative stress in 130 well-controlled type 2 diabetic patients. Primary objectives: Assess changes in HbA1c, fasting glucose, and HOMA-IR. Measure variations in oxidative stress markers (MDA, SOD, TAC, pentosidine). Secondary objectives: Monitor changes in weight, BMI, waist circumference, and blood pressure. Assess tolerance, adherence, satisfaction, and adverse events. Study design: Baseline and final visits (week 0 and week 8) with clinical, dietary, and laboratory assessments. Isocaloric substitution: 3 dates replace a carbohydrate portion (e.g., fruit or dessert). No change in antidiabetic therapy or lifestyle allowed. Endpoints: Primary: ΔHbA1c, Δfasting glucose, ΔHOMA-IR, and oxidative markers. Secondary: Anthropometrics, blood pressure, safety, adherence, lipid and metabolic parameters. Expected outcome: determine whether moderate, isocaloric date consumption is safe and potentially beneficial for metabolic control and oxidative balance in Tunisian patients with type 2 diabetes.
Age range
18 Years – 65 Years
Sex
ALL
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Change in HbA1c
Timeframe: between M3 (Week 12) and M0 (baseline),)
Change in Fasting blood glucose
Timeframe: Between M3 ( week 12) and M0 (baseline)
change in oxidative stress markers
Timeframe: Between M3 ( week 12) and M0 (baseline)
change in lipid profile
Timeframe: Between M3 ( week 12) and M0 (baseline)
change in Insulin resistance (HOMA-IR)
Timeframe: Between M3 ( week 12) and M0 (baseline)
CHAYMA BEL HADJ SLIMAN, Hospital-University Physician