Understanding kidney disease & ESRD

A gentle overview for patients and families who've just heard the words “kidney failure.”

What your kidneys do

Your two kidneys quietly clean your blood — removing waste and extra fluid, balancing salts, and helping control blood pressure. When they work, you never notice them. That's the point.

What “chronic kidney disease” means

Chronic kidney disease (CKD) is a slow loss of that cleaning ability, often over years. It's measured in stages. In the later stages the kidneys can no longer keep up, and waste and fluid build up in the body.

What ESRD and dialysis are

End-stage renal disease (ESRD) is the point where the kidneys can no longer do enough on their own. Dialysis is a treatment that does part of the kidneys' job for them — cleaning the blood and removing extra fluid — usually a few times each week.

The reassuring part: many people live active, meaningful lives on dialysis — working, traveling, and spending time with family. Care is about routine, not fear.

Medically reviewed by a nephrologist. Last updated: 2026. This guide is educational and not a substitute for consultation.