Kidney Health
Your biological filtration plant. The kidneys filter 200 liters of blood daily, extracting waste while keeping what you need. They regulate blood pressure, fluid balance, electrolytes, pH, and activate vitamin D. Chronic kidney disease is often silent until advanced—prevention is key.
What Kidneys Do
Filter Blood
Remove waste products: urea, creatinine, toxins, drugs. Keep proteins and cells in blood.
Regulate Fluid
Control water balance. Concentrate or dilute urine based on hydration. ADH responsive.
Electrolyte Balance
Regulate sodium, potassium, calcium, phosphorus, magnesium. Critical for heart function.
Blood Pressure
RAAS system control. Release renin. Regulate fluid volume → BP control.
Vitamin D Activation
Convert 25-OH vitamin D to active 1,25-OH form. Essential for calcium absorption.
Red Blood Cell Production
Produce erythropoietin (EPO). Signals bone marrow to make RBCs. CKD causes anemia.
What Damages Kidneys
Major Causes of CKD
- Diabetes: #1 cause. High glucose damages nephrons
- High blood pressure: #2 cause. Damages blood vessels
- Glomerulonephritis: Immune attack on filters
- Polycystic kidney disease: Genetic cysts
- Recurrent infections: Scarring from pyelonephritis
Other Kidney Stressors
- NSAIDs: Ibuprofen, naproxen. Reduce blood flow
- Contrast dye: CT scan contrast is nephrotoxic
- Dehydration: Chronic under-hydration stresses kidneys
- Heavy metals: Lead, cadmium, mercury accumulate
- Excessive protein: Very high protein may stress kidneys
Supporting Kidney Health
Control Blood Sugar
Keep HbA1c in healthy range. Reduce sugar and processed carbs. Protect nephrons.
Manage Blood Pressure
Target <130/80 for kidney protection. ACE inhibitors/ARBs especially protective.
Stay Hydrated
Adequate water helps kidneys flush waste. Don't over-hydrate either. Watch urine color.
Limit NSAIDs
Avoid regular use. Use alternatives when possible. Especially risky with dehydration.