9 Warning Signs Your Kidneys May Be Struggling — and Tests That Help Protect Kidney Function
The kidneys play a vital role in filtering waste from the blood, balancing fluids, controlling blood pressure, and supporting healthy red blood cell production. Chronic kidney disease (CKD) often develops slowly and may have few symptoms early on, which is why regular testing is important for people at risk.
Early detection and proper treatment can help slow kidney damage and may reduce the risk of reaching advanced kidney failure.
9 Possible Warning Signs of Kidney Problems
1. Changes in Urination
Pay attention to:
- Urinating much more or less than usual
- Needing to urinate frequently at night
- Foamy or bubbly urine
- Blood in the urine
- Difficulty urinating
2. Swelling in the Legs, Ankles, or Feet
When kidneys cannot remove enough fluid and salt, fluid may build up and cause swelling (edema).
3. Unusual Fatigue or Weakness
Kidney problems can contribute to anemia and toxin buildup, which may cause:
- Low energy
- Tiredness
- Difficulty concentrating
4. Shortness of Breath
Fluid buildup or anemia related to kidney disease can sometimes cause breathing difficulties.
5. Nausea, Loss of Appetite, or Vomiting
As kidney function declines, waste products can accumulate and affect digestion and appetite.
6. Persistent Itching or Dry Skin
Mineral and waste imbalances associated with kidney disease may contribute to skin irritation.
7. Muscle Cramps
Changes in electrolyte balance, including calcium and phosphorus levels, may contribute to cramps.
8. Back or Side Pain
Pain in the kidney area can occur with some kidney conditions, such as infections or stones, though chronic kidney disease itself often causes no pain.
9. High Blood Pressure
The kidneys help regulate blood pressure. Kidney disease and high blood pressure can worsen each other.
