Porter Health
The Patient's Guide to CKM Syndrome
Understanding the Connection Between Your Heart, Kidneys, and Metabolism
For a long time, doctors treated heart disease, kidney disease, diabetes, and obesity as separate problems. We now know they are deeply connected.
CKM (Cardiovascular-Kidney-Metabolic) Syndrome is a health disorder defined by the connections among obesity, diabetes, kidney disease, and heart disease.
Think of it like a domino effect:
The Trigger:
Excess body weight or high blood sugar can stress your body.
The Damage:
This stress inflames your blood vessels and kidneys.
The Result:
Over time, this damages the heart, leading to heart attacks, stroke, or heart failure.
Why it matters: CKM Syndrome is a major cause of premature death, but catching it early can stop the progression.
The American Heart Association has created a staging system to help you and your doctor understand your risk. The goal is to stay at Stage 0 or stop progression at lower stages.
Stage 0: No Risk Factors
What it looks like: You have a healthy weight, normal blood pressure, and normal blood sugar. Your heart and kidneys are healthy.
What's happening inside: All systems functioning optimally with no metabolic stress.
Stage 1: Excess Weight
What it looks like: You may carry extra weight (BMI ≥ 25) or have "abdominal obesity" (a larger waistline). You might have "pre-diabetes" (slightly high blood sugar), even if your weight is normal.
What's happening inside: Early metabolic stress beginning to affect your body's systems.
Stage 2: Metabolic Risk
What it looks like: You have developed specific risk factors like High Blood Pressure, High Triglycerides, Type 2 Diabetes, or Kidney Disease.
What's happening inside: Active metabolic dysfunction with measurable impacts on cardiovascular and kidney health.
Stage 3: Silent Disease
What it looks like: You feel fine, but tests show early, hidden damage. This might be hardening of the arteries (calcium) or early strain on the heart muscle or kidney function.
What's happening inside: Subclinical cardiovascular disease - damage is present but you don't have symptoms yet.
Stage 4: Heart Disease
What it looks like: You have been diagnosed with a heart condition, such as a heart attack, stroke, heart failure, or atrial fibrillation.
What's happening inside: Clinical cardiovascular disease requiring active medical management.
Because early CKM stages often have no symptoms, you need specific tests to find them.
Three tests you might not be getting, but should ask about:
1Waist Circumference Measurement
Even if your overall weight is okay, carrying weight around your belly is a major risk factor.
Warning Sign: ≥ 35 inches (88cm) for women; ≥ 40 inches (102cm) for men
Note: The cutoff is lower for individuals of Asian ancestry (≥ 31in/80cm for women; ≥ 35in/90cm for men)
2Urine Albumin-Creatinine Ratio (UACR)
A simple urine test that checks for kidney stress before it shows up in blood work.
Who needs it: Suggested annually for anyone in Stage 2 (people with high BP, diabetes, or metabolic syndrome)
3CAC Score (Coronary Artery Calcium)
A CT scan that looks for "hardened" arteries.
Who needs it: Reasonable for people with borderline risk to help decide on preventive treatments like statins
Lifestyle: Life's Essential 8
To prevent or reverse CKM, the guide recommends focusing on Life's Essential 8, a checklist for heart health:
New Medications
If you have diabetes, kidney disease, or obesity, "lifestyle alone" isn't always enough. The advisory highlights specific medications that protect the kidneys and heart simultaneously:
SGLT2 Inhibitors
Originally for diabetes, these now help protect kidneys and prevent heart failure.
GLP-1 Receptor Agonists
These help with weight loss and blood sugar, and can lower the risk of heart attacks and strokes.
Use this checklist to guide your conversation about CKM syndrome and your health:
Reference:
Based on the American Heart Association Presidential Advisory on Cardiovascular-Kidney-Metabolic (CKM) Syndrome. This guide uses plain language to explain the clinical definitions and staging system established by the AHA.
Ndumele CE, Rangaswami J, Chow SL, et al. Cardiovascular-Kidney-Metabolic Health: A Presidential Advisory From the American Heart Association. Circulation. 2023;148(20):1606-1635. doi:10.1161/CIR.0000000000001184