blood pressure

Dizziness can come from the inner ear, blood pressure, vision, anxiety, dehydration, or neurological signals. This guide explains the main mechanisms.

Your kidneys filter your entire blood supply roughly 40 times every day — about 180 liters of fluid — and return 99% of it to the bloodstream while excreting only 1 to 2 liters as urine. The precision of that selective reclamation process is what keeps you alive.

Discover how kidneys filter 180 liters of blood daily, regulate blood pressure, and what happens when they fail. Nephrons, RAAS, dialysis explained.