Inclusion Criteria:  Patients with a grade IIIA-B CKD (GFR with CKD-EPI ≥ 30 mL/min and < 60mL/min) Informed consent signed Aged 18 to 89 years  Exclusion Criteria:  Protected adult Acute renal failure Patient already on a low-AGE diet (< 1kU AGE/day) following a dietetic consultation Current participation in another interventional research