Kidney health: key habits to prevent disease and early warning signs

Kidneys filter about 1,700 L of blood each day, removing toxins and balancing fluids. The main threats to renal function are diabetes and chronic hypertension. Health experts advise drinking at least two litres of water daily, controlling weight, eating a balanced diet low in salt and sugar, exercising regularly, and avoiding frequent use of anti‑inflammatory drugs to reduce strain on the kidneys.

Early symptoms can be subtle: swelling in the legs or face, persistent fatigue, elevated blood pressure, foamy or reddish urine, excessive thirst and nocturia (waking to urinate at night). In hypertensive patients, these signs may indicate that the kidneys are struggling to filter fluids and salts. Damage to small blood vessels from high pressure leads to fluid retention, reduced urine concentration and increased nighttime urination. Screening tests such as serum creatinine measurement and urine analysis are recommended annually for high‑risk groups (diabetics, hypertensive, obese) to detect silent kidney disease before it progresses.