Warning: People Vaccinated Against COVID-19 May Be at Risk of Kidney Problems? What Science Actually Says

Kidney disease cannot be diagnosed from a social media image or symptoms alone.

Healthcare professionals use several tests to assess kidney health.

Blood creatinine test: Creatinine is a waste product filtered by the kidneys. Elevated levels can indicate reduced kidney function, although interpretation depends on factors such as muscle mass, medications, and hydration.

Estimated glomerular filtration rate: The eGFR is calculated using blood test results and other relevant information. It estimates how effectively the kidneys filter waste from the blood.

Urine albumin-to-creatinine ratio: This test measures the amount of albumin, a protein, in the urine relative to creatinine. Increased levels can indicate kidney damage, even when eGFR remains relatively normal.

Urinalysis: A urine sample can be examined for blood, protein, signs of infection, and other abnormalities.

Kidney ultrasound: Ultrasound can help identify structural abnormalities, certain types of obstruction, kidney stones in some circumstances, and changes in kidney size.

Not everyone needs every test. A clinician determines which investigations are appropriate based on symptoms, risk factors, and medical history.

People with diabetes, high blood pressure, cardiovascular disease, or a family history of certain kidney disorders may benefit from regular kidney screening.

Anyone who is worried about kidney damage after a medical event should discuss the concern with a healthcare professional rather than relying on online images or unverified claims.

6. Who Is More Likely to Develop Kidney Disease?

Several established risk factors are associated with kidney disease.

Diabetes

Diabetes is one of the leading causes of chronic kidney disease.

Persistently elevated blood glucose can damage the small blood vessels that help the kidneys filter blood.

Managing blood glucose, monitoring kidney function, and following an appropriate treatment plan can help reduce complications.

High blood pressure

High blood pressure can damage the blood vessels in the kidneys over time.

As kidney function declines, blood pressure may become more difficult to control, creating a harmful cycle.

Regular monitoring and appropriate treatment can help protect kidney health.

Cardiovascular disease

Heart and kidney function are closely connected.

Heart failure and other cardiovascular conditions can affect blood flow to the kidneys, while kidney disease can increase cardiovascular risk.

People with cardiovascular conditions may require closer monitoring.

Certain medications

Some medications can affect kidney function, particularly when used at high doses, for prolonged periods, or during dehydration.

Nonsteroidal anti-inflammatory drugs, including ibuprofen and naproxen, can reduce blood flow to the kidneys in susceptible individuals.

Certain antibiotics and other medications may also affect kidney function in specific circumstances.

People with existing kidney disease should ask a healthcare professional or pharmacist whether their medications are appropriate.

Prescribed medications should not be stopped without medical advice.

Dehydration and severe illness

Significant dehydration can reduce blood flow to the kidneys and contribute to acute kidney injury.

Severe infections, major blood loss, and other serious illnesses can also impair kidney function.

Prompt treatment of the underlying problem is important.

7. How Can You Protect Your Kidney Health?

Although not every kidney disorder can be prevented, several practical measures can reduce risk.

Keep blood pressure under control. Follow medical advice, monitor blood pressure when recommended, and take prescribed medication as directed.

Manage blood glucose if you have diabetes. Regular testing and appropriate treatment can help reduce the risk of diabetic kidney disease.

Drink adequate fluids. Fluid requirements vary according to health, climate, activity, and medications. People with advanced kidney disease or heart failure may have specific fluid restrictions and should follow their clinician’s advice.

Avoid excessive use of painkillers. Frequent or prolonged use of certain anti-inflammatory medications can increase kidney risks, especially in people who are dehydrated or have existing kidney disease.

Avoid smoking. Smoking increases cardiovascular risk and can contribute to poorer outcomes in people with kidney disease.

Eat a balanced diet. A diet that supports healthy blood pressure and blood glucose can also support kidney health. People with advanced kidney disease may need individualized dietary advice regarding sodium, potassium, phosphorus, or protein.

Get recommended health checks. Kidney disease can remain silent for years. Appropriate screening is particularly important for people with diabetes, hypertension, or other risk factors.

Seek medical advice for concerning symptoms. Blood in the urine, persistent swelling, unexplained changes in urination, and other possible warning signs deserve assessment.

These measures are useful regardless of vaccination status.