Hello , Thanks for the great question. There are so many reasons why your kidneys can fail. I just think the top ones are high blood pressure and diabetes. My grandmother was 85 when she was diagnosed with CKD. She never had high blood pressure or diabetes as we know of. As patients, it's up to us to be our own best advocates. Have you contacted your healthcare team for more testing? Let us know what you find out. We would like to hear from you. Diane (Team Member)