6 Things That Quietly Damage Your Kidneys Every Day

Dr. Alex Wibberley explains:

Kidney health is about more than just hydration

Fun fact: you can lose 70% of your kidney function before symptoms appear, because your (approximately) 1 million nephrons per kidney compensate silently, creating a dangerous false sense of normality.

6 things to watch out for:

1. Painkillers: regular use of NSAIDs such as Ibuprofen, Naproxen, and Diclofenac reduces prostaglandin production, constricts blood vessels supplying your kidneys, lowers filtration, and—especially when combined with ACE inhibitors and diuretics—can trigger ischemia and permanent scarring.
2. Hhigh blood pressure and glomerular scarring: chronic hypertension forces excessive pressure through your glomeruli, causing thickening and sclerosis, protein leakage into your urine, nephron loss, and a vicious cycle in which worsening kidney damage further elevates blood pressure.
3. Chronic (even if mild) dehydration: persistently low fluid intake activates the renin–angiotensin–aldosterone system, increases vascular constriction and intrarenal pressure, promotes fibrosis, and raises your risk of kidney stones that can obstruct flow and destroy nephrons.
4. Salt, insulin resistance, and processed food: bundled together here as “homeostasis stuff”, these things are connected; sodium doesn’t directly poison your kidneys but, in the presence of insulin resistance, insulin drives persistent sodium retention, expands plasma volume, sustains high pressure, and accelerates nephron loss—particularly when combined with ultra-processed foods that (as well as often being high in sodium too) worsen metabolic dysfunction.
5. Diabetes and hyperfiltration damage: chronically elevated glucose causes glycation and advanced glycation end products that thicken your glomerular basement membrane, injure podocytes, trigger early hyperfiltration stress, and eventually reduce function, which is why monitoring Hemoglobin A1c is critical for early detection.
6. Excessively high protein intake: although healthy kidneys tolerate higher protein intake, existing kidney disease, diabetes, hypertension, or older age can make protein-driven hyperfiltration accelerate decline by increasing intraglomerular pressure and workload.

For more on all of this, enjoy:

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Take care!