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Further studies are needed to establish the optimal diet for treating T2D.
The investigators wishes to investigate whether a low carbohydrate diet, high in monounsaturated fats (LCD) will affect cardiovascular function, metabolism and the liver.
135 participants with T2D, will be following either a LCD, or a regular diabetes diet (RDD) for 6 months. Measurements and investigations will be performed at baseline and after 6 months.
Full description
Type 2 diabetes (T2D) is an increasing global problem, especially in developing countries. T2D is associated with an increased risk of cardiovascular disease (CVD), where hyperglycemia is especially important for microvascular damage.
Previous studies in T2D on reduced carbohydrate intake has shown beneficial effects on glycemic control, indicated by reduction in HbA1c, fasting insulin and 2h-glucose (OGTT) values. However further studies are needed to establish the optimal diet for treating T2D.
The investigators wishes to investigate whether a low carbohydrate diet, high in monounsaturated fats will:
The study will be conducted through a 6 month randomized controlled trial with 135 participants with type 2 diabetes. 90 participants will be randomized to the intervention group, following a LCD, and 45 participants will be randomized to the control group (regular diet for diabetes, RDD). The below described measurements will be conducted before baseline and after 6 months, and the participants will fill out a QoL questionnaire at 0, 3 and 6 months.
Planned examinations are ultrasound assessment of flow-mediated vasodilation, Dual-energy X-ray absorptiometry (DEXA-scan), retina scan, liver biopsy, liver-scans, blood, urine, hair, saliva and feces. Accelerometers will be applied before, during and after the study to evaluate compliance in unchanged exercise pattern. Compliance with diet will be evaluated by a clinical dietitian and through food diaries.
Baseline histology from the first 50 participants suggest that the current inclusion criteria doesn't cover the full spectrum of NAFLD (NASH and fibrosis) as expected. Further 50 participants who will have had diabetes for more than 10 years and who will not fulfill inclusion criteria number 1 and 2 will be included. On this group of participants we will only perform liver-investigations and DEXA-scan. This group of participants, will not affect the timeschedule of the main study.
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Inclusion criteria
Duration of established T2D for more than six months and less than five years and HbA1c in compliance with T2D (above 48 mmol/mol), but without need for adjustment of antidiabetic treatment*
Serum cholesterol below 4.5 mmol/l and LDL cholesterol below 2.5 mmol/l at inclusion**
Age of 18 or above
Stable diabetic treatment three months prior to inclusion***
Be able to read and understand Danish language
Signed written consent
based on the assumption that metabolic and cardiovascular changes are less likely to be reversible in patients with longstanding T2D. HbA1c and need for adjustment and if the patient is eligible for inclusion will be evaluated individually based on the patients current treatment and current HbA1c by the project responsible. If the patient has duration of diabetes > 5 years but with current treatment ≤ 2 oral antidiabetic drugs and without insulin treatment, the patient will be accepted for enrolment.
Exclusion criteria
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185 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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