20 Aug 2026 (Navroze Bureau) : Your daily habits can play an important role in protecting kidney health. A nephrologist explains which lifestyle choices can support healthy kidneys and which habits may increase the risk of kidney damage over time.
Why Kidney Health Matters
The kidneys do much more than remove waste from the blood. They help regulate fluid levels, electrolytes and blood pressure while also supporting several important functions in the body.
Kidney problems can develop gradually, sometimes without obvious symptoms until the condition becomes advanced. This makes prevention and regular health checks particularly important for people at higher risk.
Start: Stay Properly Hydrated
Drinking enough fluids helps the kidneys maintain normal function and supports the body’s ability to regulate fluid balance.
However, there is no universal requirement to drink a fixed amount of water every day. Fluid needs can vary depending on factors such as weather, activity level, diet and existing medical conditions.
People with certain kidney or heart conditions may have specific fluid restrictions and should follow their doctor’s advice.
Start: Keep Blood Pressure Under Control
High blood pressure is one of the major risk factors for chronic kidney disease.
Over time, uncontrolled hypertension can damage the small blood vessels and filtering structures inside the kidneys.
Regular blood-pressure checks, a balanced diet, physical activity and prescribed treatment can help reduce this risk.
Start: Control Blood Sugar
Diabetes is another major cause of chronic kidney disease.
Persistently high blood sugar can damage kidney blood vessels and filtering units. Maintaining healthy blood glucose levels through appropriate diet, exercise and prescribed treatment can therefore help protect kidney function.
Start: Exercise Regularly
Regular physical activity can support kidney health indirectly by helping control blood pressure, blood sugar, body weight and cardiovascular health.
Walking, cycling, swimming and other moderate activities can be incorporated into a regular routine according to individual fitness levels.
Start: Eat a Kidney-Friendly Diet
A balanced diet can help reduce several risk factors for kidney disease.
Limiting excessive salt, highly processed foods and added sugars can support blood-pressure and metabolic health.
A diet rich in vegetables, fruits and appropriate sources of protein can also contribute to overall health, although people with established kidney disease may require individualized dietary restrictions.
Stop: Smoking
Smoking damages blood vessels and can reduce healthy blood flow to organs, including the kidneys.
It is also associated with cardiovascular disease and other conditions that can worsen kidney health.
Quitting smoking is therefore an important step toward protecting overall health and reducing kidney-related risks.
Stop: Overusing Painkillers
Frequent or prolonged use of certain painkillers, particularly NSAIDs such as ibuprofen and naproxen, can potentially damage the kidneys.
These medicines can reduce blood flow to the kidneys and may be particularly risky for people who already have kidney disease, dehydration or certain other medical conditions.
They should be used only as directed and with medical advice when regular use is required.
Stop: Excessive Salt Intake
Eating too much salt can contribute to high blood pressure, which in turn can damage the kidneys.
Reducing heavily salted foods, packaged snacks and processed meals can help lower sodium intake.
Stop: Ignoring Warning Signs
Persistent swelling, changes in urination, blood in the urine, unexplained fatigue or other concerning symptoms should not be ignored.
Kidney disease can sometimes progress silently, so people with risk factors should discuss appropriate screening with a healthcare professional.
Regular Health Checks Can Help
People with diabetes, high blood pressure, obesity, a family history of kidney disease or previous kidney problems may benefit from regular kidney-function testing.
Common tests include blood creatinine and estimated glomerular filtration rate, along with urine testing for markers such as albumin.
The Bottom Line
There is no single habit that can guarantee protection from kidney failure. However, maintaining healthy blood pressure and blood sugar, exercising, avoiding tobacco, limiting excess salt and using medicines responsibly can help reduce kidney-disease risk.
People with existing kidney disease should not make major changes to fluid, protein, potassium or other dietary intake without advice from their healthcare team.