Follow medication guidance

Some medicines can affect kidney function, particularly in people who already have kidney disease.

Always take prescribed medications as directed and discuss over-the-counter drugs with your healthcare professional when appropriate.

Be Careful With NSAID Painkillers

A group of medications called nonsteroidal anti-inflammatory drugs (NSAIDs) includes drugs such as ibuprofen and naproxen.

These medications can affect kidney blood flow and may increase the risk of kidney injury in certain people, particularly those with existing kidney disease, dehydration, heart failure, or certain other conditions.

This does not mean everyone must avoid NSAIDs.

It means people at risk should discuss their use with a healthcare professional rather than assuming over-the-counter automatically means harmless.

Don't Assume Supplements Are Safe for the Kidneys

"Natural" does not automatically mean kidney-safe.

Some herbal products and dietary supplements can affect kidney function or interact with medications.

This is especially important for people who already have kidney disease.

If you take supplements regularly, tell your healthcare professional exactly what you are taking.

Hydration Is Important—but More Water Isn't Always Better

People sometimes hear that drinking enormous amounts of water will "flush" the kidneys.

That is not generally necessary.

For most healthy people, normal hydration is sufficient.

Excessive water intake can actually be dangerous because it can dilute sodium in the blood.

People with certain kidney, heart, or liver conditions may also have individualized fluid restrictions.

The appropriate amount of fluid depends on the person and their medical circumstances.

When Should You Talk to a Doctor?

Consider seeking medical advice if you develop persistent or unexplained:

• Changes in urination

• Foamy urine

• Blood in the urine

• Swelling of the feet or ankles

• Puffiness around the eyes

• Severe or persistent fatigue

• Itching

• Nausea or appetite loss

• Muscle cramps

• Unexplained changes in weight

• High blood pressure

The presence of one symptom does not mean you have kidney disease.

But persistent symptoms - especially several occurring together should not simply be ignored.

When Symptoms Require Urgent Care

Some symptoms require more immediate attention.

Seek urgent medical care for:

• Sudden severe shortness of breath

• Chest pain

• Severe confusion

• Loss of consciousness

• Very little or no urine production

• Severe swelling accompanied by breathing difficulties

• Sudden severe weakness

• Severe flank pain with fever or other concerning symptoms

These signs can have many causes, some of which are emergencies.

Don't Wait Until You Feel Sick

One of the most important lessons about kidney health is that prevention and early detection matter.

Kidney disease often does not announce itself dramatically in the beginning.

Instead, changes may first appear on a routine blood test or urine test.

That is why people with diabetes, high blood pressure, cardiovascular disease, or other risk factors should discuss appropriate kidney screening with their healthcare provider.

Testing can reveal problems while a person still feels completely healthy.

The Bottom Line

Your kidneys rarely demand attention.

They work continuously, filtering waste, regulating fluid and electrolytes, helping control blood pressure, supporting red-blood-cell production, and contributing to bone and mineral health.

When kidney function declines, the early signs can be subtle or nonexistent.

Persistent changes in urination, foamy urine, blood in the urine, swelling around the ankles or eyes, unexplained fatigue, itching, muscle cramps, appetite changes, and difficulty concentrating can occur with kidney disease, particularly as it becomes more advanced.

But none of these symptoms is specific enough to diagnose kidney disease on its own.

The most reliable way to understand kidney health is through appropriate blood and urine testing, particularly eGFR and urine albumin measurements.

If you have diabetes, high blood pressure, cardiovascular disease, a family history of kidney disease, or another major risk factor, don't wait for symptoms before talking with your healthcare professional about screening.

Your kidneys can lose function quietly.

Sometimes, the earliest warning isn't something you feel at all—it's a small change in a blood or urine test that gives you an opportunity to act before more serious problems develop.