Kidney Detox: How Your Kidneys Clean Your Blood and How to Help
Your kidneys filter about 142 litres of blood every day. Learn why kidney disease is rising in India, which habits protect your kidneys and which tests to ask for.
On this page
- How do your kidneys detox your body?
- How common is kidney disease in India?
- What are the best habits for a kidney detox?
- Can juice cleanses harm your kidneys?
- Do kidney cleanse teas and drinks work?
- Which kidney tests should you ask for?
- What are the warning signs of kidney problems?
- The bottom line
- Frequently asked questions
- Sources
Quick answer
Your kidneys detox your body on their own, filtering about 142 litres of blood a day into urine. You protect them by drinking enough water, limiting salt, avoiding painkiller overuse and keeping blood pressure and sugar in check. Detox juices are not needed, and high-oxalate juice cleanses have been linked to kidney injury.
Key takeaways
- Your kidneys filter about 142 litres of blood every day and do not need detox products.
- About 13% of Indians aged 15 and over have chronic kidney disease, more in rural areas.
- High blood pressure and diabetes are the leading causes of kidney disease.
- Drink enough water, limit namak and avoid regular painkiller use without advice.
- High-oxalate green juice cleanses have been linked to acute kidney injury.
- Ask your doctor about creatinine, eGFR and urine ACR tests if you are at risk.
"Kidney detox" teas, juices and powders are sold with the promise of a cleaner, healthier filter system. Your kidneys, though, are already one of the hardest-working detox organs you have. This guide explains how they work, why kidney disease is rising in India, which habits protect them, why some juice cleanses can actually harm them, and which simple tests to ask your doctor about.
How do your kidneys detox your body?
Your kidneys detox your body by filtering your blood around the clock. Together they filter about 150 quarts, or roughly 142 litres, of blood every day and turn the waste and extra water into 1 to 2 quarts of urine (NIDDK).
Each kidney contains about a million tiny filtering units called nephrons. Your kidneys also help control blood pressure, balance salts and acids, signal your body to make red blood cells and keep your bones healthy.
Because this filtering never stops, healthy kidneys do not need a special cleanse. What they need is protection from the things that wear them down over years: high blood pressure, high blood sugar, too much salt, dehydration and certain medicines. Your kidneys work alongside your liver, gut, lungs and skin, as we explain in our full body detox guide.
How common is kidney disease in India?
Chronic kidney disease (CKD) affects more than one in eight Indians aged 15 and over. A 2025 review of community-based studies in Nephrology found a pooled prevalence of 13.24% (Talukdar et al., Nephrology 2025).
The same review found prevalence rose from 11.12% in studies from 2011–2017 to 16.38% in studies from 2018–2023. It was also higher in rural areas (15.34%) than in urban areas (10.65%), a reminder that kidney health is not only a city problem.
The main causes of CKD are high blood pressure and diabetes, along with high cholesterol, infections and some medicines. CKD is also more common in people of South Asian origin (NHS).
What are the best habits for a kidney detox?
The best "kidney detox" is a set of everyday habits that reduce strain on your kidneys. None of these is dramatic, but together they matter far more than any cleanse.
- Drink enough water, especially in summer. Indian summers, long commutes and outdoor work can leave you dehydrated without noticing. Sip water through the day and drink more when it is hot or you sweat heavily. Pale yellow urine is a simple sign you are drinking enough. If you have kidney or heart disease, ask your doctor how much fluid is right for you.
- Cut back on namak. NIDDK advises limiting sodium to under 2,300 mg a day, about one level teaspoon of salt in total (NIDDK). Much of our salt hides in achaar, papad, namkeen, instant noodles, chaat masala and restaurant food. Kala namak and rock salt are still salt.
- Do not overuse painkillers. Regular use of NSAIDs such as ibuprofen or diclofenac can harm the kidneys (NHS). Avoid taking them daily for aches and headaches without your doctor's advice.
- Check your blood pressure. High BP is a leading cause of CKD. A home BP machine costs less than many detox products and gives you far more useful information.
- Check your blood sugar. Diabetes is the other leading cause. If you have a family history, get a fasting sugar or HbA1c test as your doctor advises.
- Get calcium from food rather than pills. NIDDK notes that calcium from food does not cause stones and can actually help block substances that do. Ragi, til and leafy vegetables other than spinach are good options, alongside moderate dairy.
- Go easy on animal protein. NIDDK says eating animal protein such as meat, fish and eggs may increase your chances of kidney stones. Replace some of it with dal, chana and rajma.
- Be careful with unlabelled herbal products. Some Ayurvedic products have been found to contain lead, mercury or arsenic (NCCIH). Buy from reputable makers and tell your doctor what you take.
- Stay active and keep a healthy weight. This helps control both blood pressure and blood sugar, the two biggest threats to your kidneys.
Tip: Nimbu pani without sugar, chaas and coconut water can make hot days easier, but plain water should still be your main drink. If you have kidney disease, check with your doctor before drinking coconut water regularly.
Can juice cleanses harm your kidneys?
Yes, some can. Juices made from large amounts of greens or beets are high in oxalate, and NCCIH warns they can be risky for people prone to kidney stones (NCCIH).
In one published case, a 65-year-old who followed a 10-day "green smoothie cleanse" developed acute oxalate nephropathy, a type of kidney injury caused by oxalate crystals (Am J Kidney Dis, 2018). The person had a history of gastric bypass surgery, which increases oxalate absorption, but the case shows how a "healthy" cleanse can go wrong.
Other cleanse risks include dehydration from laxatives, electrolyte problems from long fasts or fluid-only diets, and bacteria in unpasteurised juice, which is a particular concern for children, older adults and people with low immunity. Detox products are not needed for kidney health, and you do not sweat out toxins through your skin either (Harvard Health).
Do kidney cleanse teas and drinks work?
No kidney tea, powder or drink has been shown to cleanse the kidneys. NCCIH found "no compelling research" that detox diets eliminate toxins, and warns that some detox products have contained harmful ingredients (NCCIH).
Laxative-based cleanses deserve extra care. Epsom salt, used in many naturopathy cleanses including our own Cleansing Therapy, is magnesium sulphate, and your kidneys are what clear magnesium from the body. That is why anyone with a kidney condition should talk to their doctor before any cleanse and should never do one unsupervised. The same caution applies to the olive oil and citrus steps we describe in our liver detox guide.
Which kidney tests should you ask for?
Early kidney disease usually causes no symptoms, so the only way to know is to be tested. The NHS advises that people with diabetes or high blood pressure have regular blood and urine tests (NHS).
| Test | What it checks | Who should ask for it |
|---|---|---|
| Serum creatinine with eGFR | How well your kidneys are filtering waste from your blood | Anyone with diabetes, high BP, heart disease or a family history of kidney disease |
| Urine albumin-to-creatinine ratio (ACR) | Whether protein is leaking into your urine, an early sign of kidney damage | Especially people with diabetes or high BP |
| Blood pressure | A leading cause of kidney damage | All adults, regularly |
| Fasting blood sugar or HbA1c | Diabetes, the other leading cause | Adults with risk factors, as your doctor advises |
| Routine urine test | Blood, infection or protein in urine | If you have symptoms or as part of a health check |
Your doctor will tell you how often to repeat these. Many diagnostic labs in India offer them at modest cost, and a yearly check is a far better investment than a detox kit.
What are the warning signs of kidney problems?
Kidney disease is often silent until it is advanced. When symptoms appear, they can include tiredness, swollen ankles, feet or hands, breathlessness, feeling sick and blood in your urine (NHS).
See a doctor if: you notice blood in your urine, swelling in your ankles, feet, hands or face, unexplained tiredness or breathlessness, persistent nausea, a big change in how much you pass urine, or severe pain in your side or back. If you have diabetes or high blood pressure, ask for kidney tests even if you feel well.
(In Hindi, people often search for this as किडनी की सफाई कैसे करें or "kidney detox kaise kare".)
The bottom line
Your kidneys filter about 142 litres of blood a day without any help from detox products. Protect them by drinking enough water, cutting back on salt, avoiding painkiller overuse, and keeping your blood pressure and blood sugar in check. Ask your doctor for creatinine, eGFR and urine ACR tests if you are at risk.
If you are curious about supervised naturopathy, read our FAQs or talk to our team about whether a camp suits you, and speak to your doctor first if you have any kidney condition.
Medical note: This article is for general information and is not a substitute for advice from a qualified doctor. If you have a health condition, are pregnant or take regular medicines, talk to your doctor before starting any cleanse or diet change.
Frequently asked questions
How can I detox my kidneys naturally?
Your kidneys already clean your blood, so the natural approach is to reduce what strains them. Drink enough water, especially in hot weather, keep sodium under 2,300 mg a day, avoid taking painkillers like ibuprofen regularly without advice, stay active and keep your blood pressure and blood sugar under control. Regular tests matter if you have diabetes or high BP.
How much water should I drink for healthy kidneys?
There is no single number for everyone, because needs change with heat, activity and health. A practical guide is to drink enough through the day that your urine stays pale yellow, and to drink more in Indian summers or when sweating heavily. People with kidney or heart disease may need to limit fluids, so they should follow their doctor's advice.
Are kidney cleanse juices safe?
Not always. Juices made from large amounts of greens or beets are high in oxalate, which can be risky for people prone to kidney stones. A published case described acute oxalate nephropathy in a 65-year-old after a 10-day green smoothie cleanse. Unpasteurised juices can also carry bacteria, and fluid-only diets can upset electrolytes.
Which test shows if my kidneys are healthy?
Two simple tests give most of the picture. A blood test for serum creatinine is used to calculate your eGFR, which shows how well your kidneys filter. A urine albumin-to-creatinine ratio (ACR) checks for protein leaking into urine, an early sign of damage. Your doctor may also check blood pressure, blood sugar and a routine urine test.
What are the early signs of kidney problems?
Early kidney disease usually has no symptoms, which is why testing matters for people with diabetes or high blood pressure. As it progresses, signs can include tiredness, swollen ankles, feet or hands, breathlessness, nausea and blood in the urine. See a doctor promptly if you notice any of these, rather than trying a home cleanse.
Do painkillers damage the kidneys?
Some can when used often or for a long time. The NHS lists certain medicines, including non-steroidal anti-inflammatory drugs such as ibuprofen, among the causes of chronic kidney disease. Occasional use as directed is usually fine for healthy people, but if you need painkillers regularly, talk to your doctor about safer options and kidney tests.
Sources
- Your Kidneys & How They Work — NIDDK
- Chronic Kidney Disease Prevalence in India: A Systematic Review and Meta-Analysis From Community-Based Representative Evidence Between 2011 to 2023 — Nephrology (2025)
- Chronic kidney disease — NHS
- "Green Smoothie Cleanse" Causing Acute Oxalate Nephropathy — American Journal of Kidney Diseases (2018)
- Eating, Diet, & Nutrition for Kidney Stones — NIDDK
- Detoxes and Cleanses: What You Need To Know — NCCIH
- The dubious practice of detox — Harvard Health Publishing
- Ayurvedic Medicine: In Depth — NCCIH
We cite peer-reviewed research, government health bodies and the providers’ own published information. Found an error? Tell us and we’ll review it.
