It is an intriguing question and the answer is going to make you happy. Yes, Type 2 diabetes can be cured in some cases. According to a scholarly article “Weight and Type 2 Diabetes after Bariatric Surgery”, in “The American Journal of medicine; Overall, 78.1% of diabetic patients had complete resolution, and diabetes was improved or resolved in 86.6% of patients. Weight loss and diabetes resolution were greatest for patients undergoing biliopancreatic diversion/duodenal switch, followed by gastric bypass
In a similar study, a meta-analysis reported improved glycemic control and remission of type 2 diabetes in 83.8% of patients following gastric bypass and 47.8% following gastric banding.
biliopancreatic diversion, BPD) and restrictive (roux-en-Y gastric bypass, RYGB) surgeries are bariatric surgeries for treating patients with morbid obesity, and have shown complete Type 2 diabetes resolution in more than 78% of the patients, and improvement and resolution of Type 2 diabetes in more than 86% of the patients.
There are many reasons behind resolution of Type 2 diabetes after bariatric surgeries like 1. Gastric Sleeve or Sleeve Gastrectomy, 2. Gastric bypass also known as roux-en-Y gastric bypass, and 3. Gastric Lap Banding.
According to the prevailing theories, the surgeries affect diabetes because there is quick delivery of nutrients to the small intestine, and the other is the suppression of the anti-incretin hormone. A major lifestyle change is also responsible for the improvement in Type 2 diabetes, as post obesity surgery, the patients have to take meals in smaller proportions, have to follow strict diet and exercise, and have to abstain from alcohol and smoking.
Although it can be argued that by making substantial lifestyle changes and by following strict dietary, exercise and medicine routine one can see the improvement in diabetes but such success percentage is about 6% compared to 86% in case of Gastric Surgeries.
You should consult a bariatric surgeon if:
Your BMI is higher than 35 and you have diabetes, heart condition, or other severe diseases
Your BMI is higher than 40 although you have no disease
You are obese and are not able to lose weight through exercise and diet
You are obese and your Diabetes is severely getting out of control
The final decision has to be taken by your doctor and your bariatric surgeon. The weight loss bariatric surgery demands a substantial amount of lifestyle change and if you are ready to do that, you will also reap the benefits that comes with it.