The kidneys are two small organs, about the size of a fist, that work silently around the clock, filtering more than 190 liters of blood a day, balancing fluids, and maintaining the proper functioning of vital body functions. However, when kidney health begins to deteriorate, the warning signs are often so subtle that most people overlook them.
Kidney disease doesn’t scream, it whispers.
And if you ignore those whispers, the damage could already be advanced by the time you notice it.
If you’re over 40, have high blood pressure, diabetes, or a family history of kidney problems, these 23 unusual symptoms of kidney disease deserve your attention. Detecting them early could help protect your kidneys for years to come.
1. Foamy or Bubbly Urine
Persistent bubbles in the toilet bowl may indicate protein loss, a common sign of early kidney damage.
2. Swelling in the ankles or feet
When the kidneys have difficulty removing excess salt and fluid, swelling may occur, especially in the lower legs.
3. Constant fatigue:
The kidneys produce erythropoietin, a hormone that helps produce red blood cells. Low levels of erythropoietin can lead to anemia, leaving you exhausted.
4. Frequent urination at night
Waking up and urinating more than once during the night can be a sign of reduced kidney function.
5. Brain fog or lack of concentration
The accumulation of toxins in the blood can impair brain function, causing confusion or forgetfulness.
6. Persistently dry or itchy skin
When the mineral balance is upset, the skin can become uncomfortably dry and itchy.
7. Metallic taste in the mouth
Uremia (a buildup of waste products) can cause a metallic taste or ammonia-like breath.
8. Loss of appetite
The accumulation of waste in the bloodstream can affect digestion and suppress hunger.
9. Bad breath despite good oral care
If regular brushing doesn’t help, a buildup of internal toxins (not dental problems) could be the cause.
10. Swelling around the eyes
Swelling around the eyes can be one of the first signs of protein loss through urine.
11. Dark Circles
Poor circulation and reduced filtration can lead to dark shadows under the eyes.
12. Craving ice or non-food items
This may indicate iron deficiency anemia, a complication related to kidney disease.
13. Nighttime muscle cramps.
The kidneys regulate calcium, potassium, and sodium. An imbalance can cause cramps and spasms.
14. Ardor al originar
Aunque a menudo está relacionado con una infección, ambién puede señal de inflammación del riñón.
15. Orina dark or colored cola
The orina of brown color, red or oxide may contain blood or proteins related to renal problems.
16. Ropa adjusted without an increase in weight
The retention of liquids due to the malfunction of the ribs may cause hinchazón.
17. High arterial pressure cannot be controlled.
Damaged ribs cannot regulate the arterial pressure so that it is effective, if there are any problems.
18. Nauseas and vomits
High levels of toxins in blood can irritate the stomach and cause nausea.
19. Feel cold all the time
Anemia caused by renal entrapment can reduce body temperature.
20. Changes in humor or depression
The accumulation of toxins and hormonal changes can affect the chemical substances that regulate the state of the body.
21. Difficulty breathing with light activity
The accumulation of fluid in the lungs due to renal problems can make breathing more difficult.
22. Pain in the lower back or sides
Discomfort near the ribs or back could be due to pain originating in the kidneys.
23. Lack of sleep or restless legs
Toxins in the blood can disrupt sleep and cause leg spasms during the night.
Why You Shouldn’t Ignore Early Symptoms of Kidney Disease
Kidney disease is known as the silent killer for a reason: it develops slowly, often without serious symptoms, until the damage is severe. Recognizing subtle changes early can help prevent permanent loss of kidney function.
What to do if you notice these signs
Ask your doctor for a kidney function test (creatinine, GFR, urinalysis)
Keep blood pressure and blood sugar within healthy ranges.
Drink enough water daily to promote filtration.
Follow a low-sodium, kidney-friendly diet rich in whole foods.
Exercise regularly to improve circulation.
Limit NSAIDs and avoid unnecessary medications that can overwork your kidneys.
Final thoughts: Your kidneys work tirelessly every day to maintain your body’s balance, but they have limits. Paying attention to early warning signs can mean the difference between manageable lifestyle changes and irreversible damage. If you recognize any of these symptoms, act now. A simple conversation with your healthcare professional could be the first step toward protecting your long-term health.
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