Inclusion Criteria:  - Patients >18 years old with advanced CKD (GFR <30ml/min) starting follow-up in the advanced CKD consulting room of the Malaga University Regional Hospital and who clearly understand the study and give their informed consent.  Exclusion Criteria:  Patients presenting any of these conditions:  Active cancer Being already participants of another study that may affect the results Pregnancy or possible pregnancy Informed consent refusal Hospital admission during one month previous to the study Severe mental disorders (SMD), prolonged mental disorders involving a high level of disability and social dysfunction, which requires attendance by the mental health and social care network Alcohol or any other substance abuse that, in the researcher's opinion, may interfere with the study