Your kidneys work quietly every day, filtering waste and extra fluid from your blood, helping control blood pressure, balancing important minerals, and supporting other essential functions. Because kidney disease can develop slowly and sometimes causes no symptoms in its early stages, taking care of your kidneys before problems appear is important.
The good news is that many of the major risk factors for kidney disease can be reduced or controlled. However, it is also important to be realistic: not every kidney problem can be prevented. Some kidney diseases are caused by genetics, autoimmune conditions, infections, structural problems, or other medical conditions that may be outside a person’s control.
The goal, therefore, is not to promise that kidney disease can always be avoided. It is to reduce preventable risks, identify problems early, and avoid habits that can unnecessarily damage the kidneys.
1. Keep Your Blood Pressure Under Control
High blood pressure is one of the most important causes and risk factors for chronic kidney disease.
The kidneys contain many small blood vessels that help filter the blood. Over time, uncontrolled high blood pressure can damage these vessels and reduce the kidneys’ ability to work properly.
People with high blood pressure should have it monitored and follow the treatment plan recommended by their health care professional. Treatment may involve eating less salt, exercising, maintaining a healthy weight, stopping smoking, and taking prescribed medication.
The National Institute of Diabetes and Digestive and Kidney Diseases states that preventing or controlling conditions such as high blood pressure is one of the main ways to protect the kidneys (National Institute of Diabetes and Digestive and Kidney Diseases [NIDDK], 2016).
Do not stop blood pressure medication because you feel well. High blood pressure often has no obvious symptoms.
2. Take Diabetes Seriously
Diabetes is another major cause of chronic kidney disease.
Persistently high blood sugar can damage the small blood vessels in the kidneys. According to the Centers for Disease Control and Prevention (CDC), approximately one in three adults with diabetes has chronic kidney disease (Centers for Disease Control and Prevention [CDC], 2024a).
If you have diabetes, protecting your kidneys involves keeping your blood sugar as close as reasonably possible to the target agreed upon with your health care professional, taking your medication as prescribed, monitoring your blood pressure, and receiving recommended kidney tests.
The right blood sugar target is not identical for everyone, so treatment should be individualized.
3. Do Not Abuse Painkillers
One of the most important kidney-safety messages is that some common pain medicines can harm the kidneys when used incorrectly.
Nonsteroidal anti-inflammatory drugs, commonly called NSAIDs, include medicines such as ibuprofen and naproxen. These medicines can be useful when taken appropriately, but frequent or prolonged use can damage the kidneys in some people.
The risk can become greater when a person is dehydrated, has low blood pressure, already has kidney disease, has diabetes, or has certain other medical conditions. NSAIDs can contribute to acute kidney injury, particularly during dehydration or serious illness (NIDDK, 2018).
This does not mean that nobody should ever use an NSAID. It means that people should avoid taking them excessively or continuously without medical advice.
If you regularly need pain medication, discuss the safest option with a doctor or pharmacist.
4. Stay Properly Hydrated, But Do Not Believe the “More Water Is Always Better” Myth
Water is important for normal body function, and dehydration can contribute to kidney injury in certain situations.
Adequate fluid intake is particularly important for people at risk of kidney stones. NIDDK identifies drinking enough liquid, mainly water, as one of the most important measures for preventing many types of kidney stones (NIDDK, 2017).
However, there is no evidence that endlessly forcing yourself to drink huge quantities of water will “clean” or “detox” healthy kidneys.
People with kidney failure, advanced kidney disease, heart failure, or certain other conditions may actually need individualized advice about fluid intake. Therefore, someone who has been told by a health professional to restrict fluids should not increase water intake simply because of general internet advice.
Drink enough to stay appropriately hydrated, especially during hot weather, exercise, vomiting, diarrhea, or illness, unless your health care professional has given you different instructions.
5. Reduce Excess Salt
Too much sodium can contribute to high blood pressure, which can place additional stress on the kidneys.
NIDDK recommends aiming for less than 2,300 milligrams of sodium per day for generally healthy adults as part of its kidney-disease prevention guidance (NIDDK, 2016).
A great deal of sodium does not necessarily come from the salt shaker. It can be hidden in processed meat, instant noodles, packaged snacks, canned foods, fast food, sauces, seasoning products, and many heavily processed meals.
Cooking more meals from basic ingredients, checking food labels, and gradually reducing salt can make a significant difference.
People who already have chronic kidney disease may need more individualized dietary advice.
6. Eat a Balanced Diet Instead of Following “Kidney Detox” Diets
There is no special juice, tea, powder, herb, or food that can magically cleanse your kidneys.
A healthier approach is a balanced diet containing foods such as vegetables, fruits, whole grains, legumes, and other minimally processed foods while limiting excessive sodium, refined carbohydrates, highly processed foods, and added sugars.
NIDDK recommends heart-healthy food choices as part of kidney disease prevention, while the KDIGO clinical guideline also emphasizes healthy dietary patterns and appropriate lifestyle changes for people with chronic kidney disease (Kidney Disease: Improving Global Outcomes [KDIGO] CKD Work Group, 2024; NIDDK, 2016).
Do not drastically restrict protein, potassium, phosphorus, or calcium simply because you are afraid of kidney disease. These restrictions are appropriate for some patients with particular kidney conditions but are not automatically necessary for healthy people.
7. Be Careful With Herbal Products and Supplements
Something described as “natural” is not automatically harmless.
Herbal remedies, supplements, vitamins, medicines, and traditional preparations may contain substances that affect the kidneys or interact with prescription medication. The exact risk varies greatly depending on the ingredients, dosage, manufacturing quality, and individual using the product.
NIDDK advises people to discuss over-the-counter medicines, vitamins, and supplements with their health care providers or pharmacists, especially when kidney disease or kidney risk factors are present (NIDDK, 2018).
Avoid taking unknown mixtures simply because someone claims they “clean the kidneys.”
If a product does not clearly state what it contains, that is a good reason to be cautious.
8. Exercise and Maintain a Healthy Weight
Regular physical activity helps protect the kidneys indirectly by improving blood pressure, blood sugar control, cardiovascular health, and body weight.
NIDDK recommends being physically active for at least 30 minutes on most days as part of a kidney-protective lifestyle (NIDDK, 2016).
The 2024 KDIGO guideline also recommends regular moderate-intensity physical activity for people with chronic kidney disease when medically appropriate (KDIGO CKD Work Group, 2024).
You do not necessarily need a gym. Walking briskly, cycling, swimming, dancing, or other activities can contribute to your weekly exercise.
People who have been inactive for a long time or have serious medical conditions should discuss appropriate exercise with a health professional.
9. Do Not Smoke
Smoking damages blood vessels and increases cardiovascular risk. Because healthy kidney function depends on adequate blood flow, avoiding tobacco is an important part of overall kidney and cardiovascular protection.
Both NIDDK and KDIGO include avoiding tobacco as part of kidney-protective lifestyle recommendations (KDIGO CKD Work Group, 2024; NIDDK, 2016).
Stopping smoking can benefit far more than the kidneys. It lowers the risk of heart disease, stroke, lung disease, and several cancers.
10. Treat Urinary Tract Infections Promptly
A urinary tract infection should not always be dismissed as a minor inconvenience.
Many kidney infections begin as infections of the bladder that spread upward into one or both kidneys. Untreated kidney infections can occasionally result in serious complications, including kidney scarring, sepsis, and kidney failure (NIDDK, 2024a).
Symptoms that deserve medical attention include burning or pain when urinating, unusually frequent urination, cloudy or bloody urine, fever, chills, nausea, vomiting, and pain in the back, side, or groin.
A combination of urinary symptoms with fever or back or side pain can indicate a kidney infection and should be assessed promptly.
11. Reduce Your Risk of Kidney Stones
Kidney stones are not the same as chronic kidney disease, but they can cause severe pain and, in some situations, complications.
For many people, adequate fluid intake is one of the most important ways to reduce kidney stone risk. Sodium intake can also matter. People who have previously developed stones may need dietary changes depending on the specific type of stone they form.
For example, recommendations may involve changing sodium, animal protein, calcium, or oxalate intake. These changes should ideally be based on the type of stone rather than following a random restrictive diet (NIDDK, 2017).
Importantly, people with calcium-containing stones should not automatically remove calcium from their diet. Appropriate dietary calcium can actually be important in preventing certain stones.
12. Know Whether You Are at Higher Risk
You should pay particular attention to kidney health if you have:
- Diabetes
- High blood pressure
- Heart or cardiovascular disease
- A close family history of chronic kidney disease or kidney failure
- Overweight or obesity
- Previous kidney disease or repeated kidney stones
- Regular exposure to medicines that may affect kidney function
Diabetes, high blood pressure, cardiovascular disease, and family history are among the important recognized risk factors for chronic kidney disease (CDC, 2024a; NIDDK, 2016).
Having a risk factor does not mean that you will definitely develop kidney disease. It means that screening and prevention deserve more attention.
13. Get Your Kidneys Tested If You Are at Risk
One of the most dangerous things about chronic kidney disease is that early disease may cause no symptoms.
Waiting until you “feel kidney pain” is therefore not an effective screening strategy.
Kidney function can be assessed with blood and urine tests. Common tests include blood creatinine with an estimated glomerular filtration rate, or eGFR, and urine testing for albumin, often using a urine albumin-to-creatinine ratio.
The CDC recommends regular kidney testing for people at increased risk, especially those with diabetes or high blood pressure. Early diagnosis can allow treatment to begin before severe kidney damage develops (CDC, 2024b).
Ask your health care professional whether you need kidney testing and how frequently it should be performed.
14. Do Not Ignore Warning Signs
Many people with early kidney disease feel completely normal. However, certain symptoms should not be ignored.
Possible signs of kidney or urinary problems can include:
- Blood in the urine
- Persistent foamy urine
- Swelling of the feet, ankles, legs, hands, or face
- Major changes in how frequently you urinate
- Difficulty passing urine
- Severe pain in the back or side
- Pain or burning during urination
- Fever combined with urinary symptoms or back pain
- Persistent nausea or vomiting
- Unexplained worsening tiredness
These symptoms do not automatically mean that someone has kidney disease because many other conditions can cause them. However, they may require medical assessment. Early chronic kidney disease frequently produces no symptoms at all, which is why appropriate testing is important (NIDDK, 2024b).
What You Should Remember
Protecting your kidneys is usually less about buying special supplements or drinking “detox” products and more about managing ordinary health risks consistently.
Control your blood pressure and blood sugar. Avoid unnecessary or excessive use of medicines that can harm the kidneys. Eat a balanced diet without excessive salt. Stay appropriately hydrated. Exercise regularly. Avoid tobacco. Treat urinary infections promptly. Maintain a healthy weight, and get tested if you have risk factors.
Most importantly, do not wait for symptoms before thinking about your kidneys. Chronic kidney disease can remain silent for years.
Good kidney health is often built through ordinary habits practiced consistently rather than extraordinary treatments.
Medical Disclaimer
This article is for general educational and informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease and should not replace individualized medical advice from a qualified health care professional. Kidney health recommendations can differ depending on a person’s medical history, medications, age, pregnancy status, kidney function, blood pressure, diabetes status, and other conditions. Readers should consult a qualified health professional before making significant changes to medication, supplements, fluid intake, or diet. Readers are also encouraged to verify health information using reputable medical and public-health sources.
References
Centers for Disease Control and Prevention. (2024a, May 14). Risk factors for chronic kidney disease. https://www.cdc.gov/kidney-disease/risk-factors/index.html
Centers for Disease Control and Prevention. (2024b, May 15). Testing for chronic kidney disease. https://www.cdc.gov/kidney-disease/testing/index.html
Kidney Disease: Improving Global Outcomes (KDIGO) CKD Work Group. (2024). KDIGO 2024 clinical practice guideline for the evaluation and management of chronic kidney disease. Kidney International, 105(4S), S117–S314. https://doi.org/10.1016/j.kint.2023.10.018
National Institute of Diabetes and Digestive and Kidney Diseases. (2016, October). Preventing chronic kidney disease. National Institutes of Health. NIDDK: Preventing chronic kidney disease
National Institute of Diabetes and Digestive and Kidney Diseases. (2017, May). Eating, diet, & nutrition for kidney stones. National Institutes of Health. NIDDK: Eating, diet, & nutrition for kidney stones
National Institute of Diabetes and Digestive and Kidney Diseases. (2018, June). Keeping kidneys safe: Smart choices about medicines. National Institutes of Health. NIDDK: Keeping kidneys safe
National Institute of Diabetes and Digestive and Kidney Diseases. (2024a, October). Symptoms & causes of kidney infection (pyelonephritis). National Institutes of Health. NIDDK: Kidney infection symptoms and causes
National Institute of Diabetes and Digestive and Kidney Diseases. (2024b). What is chronic kidney disease in adults? National Institutes of Health. NIDDK: Chronic kidney disease in adults
