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Exp Clin Endocrinol Diabetes. 2008 Feb;116(2):132-4. Epub 2007 Dec 20.

Clinical benefit of a short term dietary oatmeal intervention in patients with type 2 diabetes and severe insulin resistance: a pilot study.

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V Medizinische Klinik, University Hospital Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany.



To evaluate the potential effectiveness of 'carbohydrate days' as a dietary intervention to overcome insulin resistance in type 2 diabetes.


Patients (n=14) with uncontrolled type 2 diabetes and insulin resistance as defined by a dosage of more than 1 IU/day (*)kg BW were consecutively enrolled in this prospective study. Primary outcomes were daily insulin requirement and mean blood glucose levels which were evaluated before, after, and 4 weeks after the intervention.


All patients had a metabolic syndrome, 75% had microvascular and 57.1% macrovascular complications. Hospital setting and diabetes adapted diet alone led to improved glycemic control with a mean blood glucose 158+/-47 mg/dl. Intervention with two days of oatmeal diet further decreased mean blood glucose to 118+/-37 mg/dl (p<0.05). This was associated with a significant reduction of insulin dosage by 42.5% (before: 145+/-68.9 U/d, after 83+/-34.2 U/d, p<0.001) as well as a significant reduction (-26.4%, p<0.01) of serum leptin levels. After the four weeks outpatient period, insulin dosage remained significantly decreased (83+/-20.2 U/kg (*)d, p<0.01). Glycemic control was comparable (mean blood glucose141+/-20.78 mg/dl) to glucose levels within the hospital setting. Adiponectin levels increased significantly by 53.8% (p<0.05).


In this uncontrolled pilot study, hospital admission and diabetes adapted diet followed by oatmeal intervention achieved a approximately 40% reduction of insulin dosage required to achieve controlled glucose levels. This effect was conserved after a 4 week outpatient phase with normal diet.

[Indexed for MEDLINE]

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