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Surg Obes Relat Dis. 2012 Jan-Feb;8(1):20-4. doi: 10.1016/j.soard.2011.06.015. Epub 2011 Jul 13.

Type 2 diabetes in obese patients with body mass index of 30-35 kg/m2: sleeve gastrectomy versus medical treatment.

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Surgical-Medical Department for Digestive Diseases, Policlinico Umberto I, University La Sapienza, Rome, Italy.



Type 2 diabetes mellitus (T2DM) and obesity are diseases of epidemic proportions. Long-term realistic weight loss by nonsurgical methods has a variable effect on glycemic control, and only a proportion of patients with T2DM have a worthwhile response. Laparoscopic sleeve gastrectomy (LSG) has been proposed as an advantageous bariatric procedure for patients with a lower body mass index (BMI). Our objective was to compare the effects of LSG and medical therapy on patients with T2DM and a BMI of <35 kg/m(2).


A total of 18 nonmorbidly obese patients with T2DM, diagnosed according to the American Diabetes Association guidelines, were consecutively enrolled. Of these patients, 9 underwent LSG (group A) and 9 underwent conventional medical therapy (group B). The 2 groups were matched for BMI, glycated hemoglobin (HbA1c) and C-peptide levels, pretrial therapy type, and number of patients with a T2DM duration of >10 years.


In group A, T2DM resolution was achieved in 8 (88.8%) of the 9 patients (T2DM duration 5.2 yr). Hypertension was controlled in all 8 of 9 patients. Dyslipidemia was corrected. In 1 patient, obstructive sleep apnea syndrome improved. In group B, all 9 patients continued to have T2DM and required hypertensive and hypolipemic therapies throughout the observation period. At baseline, 3 patients were affected by obstructive sleep apnea syndrome and remained affected 1 year later.


The results of the present study have confirmed the efficacy of LSG in the treatment of nonmorbidly obese T2DM patients, with a remission rate of 88.8% without undesirable excessive weight loss. The results in this group of patients add to those obtained by us in patients with a BMI >35 kg/m(2).

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