This work will make it possible to identify the nephron loss of type 2 diabetic patients in the western region and to better define in general practice the impact of the elements put in place to reduce this loss and to raise awareness of the importance of these measures through training in comparison with a control group.

Inclusion Criteria:

• Patient consulting his or her investigating general practitioner
• 50 years old or more
• type 2 diabetic for more than 5 years, with a GFR lower than 90 ml/mn and higher than 45 ml/mn (stage 2 and 3a of renal failure) and a nephron loss calculated on the average of the two previous years, higher than 3 ml/mn/year
• a microalbuminuria > 30 mg/gr of creatinuria.
• Having declared the investigator as the treating physician

Exclusion Criteria:

• Patient under 50 years of age Patients who do not agree to the use of their data (refusal of consent) or are unable to give consent (dementia, other) Patients with other types of diabetes Patients with renal failure other than diabetic or hypertensive glomerulopathy Patients unable to give consent Patients who do not understand the French language Patients with less than 3 months of planned follow-up Patients with a barrier to follow-up Patients undergoing dialysis, transplantation