CKD — the plain-language one-pager.

What is Chronic Kidney Disease?Diagnosis

Chronic Kidney Disease (CKD) is when your kidneys lose their ability to filter blood, balance fluids, manage minerals, and make urine over time. About 1 in 7 U.S. adults has CKD — and most don't know it. CKD is usually silent until late stages, which is why two simple labs — eGFR and ACR — should be checked yearly if you have hypertension, diabetes, heart disease, sickle cell disease, family history of kidney disease, or are 60+. Catching CKD early lets you slow it dramatically; catching it late often means dialysis or transplant.

• Five stages based on eGFR (estimated glomerular filtration rate). Stage 1: eGFR ≥90 with kidney damage. Stage 2: 60–89. Stage 3a: 45–59. Stage 3b: 30–44. Stage 4: 15–29 (nephrology referral). Stage 5: <15 (dialysis or transplant zone).
• The two labs that matter — eGFR (filter speed; from a blood creatinine) and ACR (urine albumin/creatinine ratio; tells you if protein is leaking). Together they classify CKD and predict what happens next. Your team will track them over time.
• Top causes — Diabetes (#1), hypertension (#2), heart disease, sickle cell disease, polycystic kidney disease, glomerulonephritis, repeated NSAID use, repeated kidney injuries (AKIs), urinary obstruction. Many people have more than one driver.
• The kidney-cardiovascular link — CKD itself raises your risk of heart attack, stroke, and heart failure. Most people with CKD die of cardiovascular disease, not of kidney failure. Treating the heart and treating the kidneys is the same job.

The 30/30 rule + the kidney-protective fourSlow the curve

The newest tools have changed CKD outcomes dramatically. Used together, they can slow CKD progression to dialysis by years and cut cardiovascular events at the same time.

• BP target generally <130/80 — and use an ACE inhibitor or ARB if there is any albumin in the urine (ACR ≥30). They protect the kidney filters specifically.
• SGLT2 inhibitor (empagliflozin, dapagliflozin) — proven to slow CKD progression and reduce heart-failure hospitalizations. Considered for most CKD patients (with or without diabetes) at eGFR ≥20.
• Finerenone (a non-steroidal MRA) — added on top of ACEi/ARB for diabetic CKD with albuminuria; cuts kidney and cardiovascular events further.
• GLP-1 receptor agonist (semaglutide, tirzepatide) — for diabetic CKD, supports weight, glucose, and now has CKD-protective signals as well.

The 30/30 rule: if your eGFR drops by 30% in less than 2 years, OR your ACR is ≥30, ask your team about adding the kidney-protective four if you are not already on them.

Your daily Force FieldLive It

• Take your kidney-protective meds every day — ACE inhibitor or ARB, SGLT2 inhibitor (empagliflozin/dapagliflozin) if eligible, finerenone if your team has added it, statin for cardiovascular protection. Missing doses lets the curve steepen.
• Daily home BP cuff — target generally <130/80. CKD + uncontrolled BP is the fastest road to dialysis.
• Diabetes / A1C control — every point of A1C improvement slows CKD progression. Target usually <7% (individualized by your team).
• Avoid kidney injuries — no NSAIDs (ibuprofen, naproxen, ketorolac) without your team's OK. Stay hydrated. Tell every clinician you have CKD before any contrast scan, surgery, or new medication.
• Sodium <2,300 mg/day — most kidneys can't excrete a high-sodium load. Less ultra-processed food. More cooking from scratch.
• Potassium awareness — many kidney-protective meds raise potassium. Know your level. If your team flags it, learn the high-K foods to limit (potatoes, tomatoes, oranges, bananas, beans).
• Protein — usually moderate, not low. A renal dietitian visit is one of the highest-leverage 60 minutes of CKD care.
• Vaccines — flu, COVID, pneumococcal, hepatitis B (especially if heading toward dialysis), shingles. CKD blunts immunity.
• If heading toward dialysis (eGFR <25) — ask early about a fistula (the AV access procedure has its own 360° page on the way), home options (peritoneal, home hemo), and transplant evaluation. Pre-emptive transplant has the best outcomes.

Red flags — call nowAction

• Call your clinic the same day for: new chest discomfort with exertion that goes away with rest (stable fluid overload worth evaluating); a missed dose of antiplatelet or BP medication; medication side effects (muscle aches, bleeding, GI symptoms).
• Bring up at next visit: any change in exercise tolerance, lipid follow-up timing, BP log review, smoking-cessation support, depression screening, sleep concerns.