Participants will undergo an intensive, individualized dietary treatment to achieve a 10% reduction in body weight, during which glucose-lowering therapy will be withdrawn. Before and after the intervention, the patients will undergo:
* measurement of fasting glucose and glycated hemoglobin
* Indirect calorimetry
* oral glucose tolerance test
* intravenous glucose tolerance test
* quality of life and diet-related questionnaires
* 72-hour food records
At the end of the protocol, subjects will be followed up to maintain lifestyle changes and intercept cases of diabetes relapse.