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Is drinking a lot of water good for your kidneys?

Author

Ava Wright

Updated on July 14, 2026

Water helps the kidneys remove wastes from your blood in the form of urine. Water also helps keep your blood vessels open so that blood can travel freely to your kidneys, and deliver essential nutrients to them. But if you become dehydrated, then it is more difficult for this delivery system to work.

Can you damage your kidneys by drinking too much water?

When you drink too much water, your kidneys can't get rid of the excess water. The sodium content of your blood becomes diluted. This is called hyponatremia and it can be life-threatening. There is a problem with information submitted for this request.

How much water should I drink for my kidneys?

Whilst all fluid counts towards your fluid intake, water is one of the healthiest choices when it comes to maintaining kidney health. Sip water little and often. Women should aim to drink eight 200ml glasses of fluid a day. Men should aim to drink ten 200ml glasses of fluid a day.

How do I improve my kidney function?

Here are some tips to help keep your kidneys healthy.

  1. Keep active and fit. ...
  2. Control your blood sugar. ...
  3. Monitor blood pressure. ...
  4. Monitor weight and eat a healthy diet. ...
  5. Drink plenty of fluids. ...
  6. Don't smoke. ...
  7. Be aware of the amount of OTC pills you take. ...
  8. Have your kidney function tested if you're at high risk.

How much water can damage your kidneys?

To avoid hyponatremia, it is important not to outpace the kidneys by drinking more water than they can eliminate. The authors of the study report that hyponatremia symptoms can develop if a person drinks 3–4 liters of water in a short period, though they do not give a specific time estimate.

32 related questions found

What color is urine when your kidneys are failing?

Light-brown or tea-colored urine can be a sign of kidney disease/failure or muscle breakdown.

Can kidneys repair themselves?

While a damaged kidney typically can't repair itself, the condition can be treated if caught early. Acute kidney failure can be reversed with prompt hospitalization, although the recovery process can take weeks to months and requires regular monitoring, diet modifications, and medications.

What are the first signs of kidney problems?

Signs of Kidney Disease

  • You're more tired, have less energy or are having trouble concentrating. ...
  • You're having trouble sleeping. ...
  • You have dry and itchy skin. ...
  • You feel the need to urinate more often. ...
  • You see blood in your urine. ...
  • Your urine is foamy. ...
  • You're experiencing persistent puffiness around your eyes.

How can I heal my kidneys naturally?

Following are some natural remedies that can help you take care of your kidneys.

  1. Stay hydrated. The most common reason for the formation of kidney problems is lack of water. ...
  2. Vitamin C. Vitamins and minerals are powerful antioxidants. ...
  3. Apples. ...
  4. Kidney beans. ...
  5. Lemon juice and honey. ...
  6. Watch blood pressure. ...
  7. Dates.

What vitamins are good for kidneys?

Special renal vitamins are usually prescribed to kidney patients to provide the extra water soluble vitamins needed. Renal vitamins contain vitamins B1, B2, B6, B12, folic acid, niacin, pantothenic acid, biotin and a small dose of vitamin C.

Can drinking water reverse kidney damage?

Unfortunately, there is no cure for chronic kidney disease and it can eventually lead to kidney failure. Therefore, the goal of treatment is to slow its effects and preserve kidney function over time. Many studies suggest that increased water intake promotes better kidney function.

Does water clean your kidneys?

Water helps the kidneys remove wastes from your blood in the form of urine. Water also helps keep your blood vessels open so that blood can travel freely to your kidneys, and deliver essential nutrients to them.

What happens if you drink too much water?

Drinking too much water can be unhealthy and even lead to death in extreme cases. When you drink more water than your kidneys can handle, you can upset the balance of sodium levels in your blood. This is called water intoxication and in extreme cases, it can cause brain damage, comas, and even death.

How many bottles of water should I drink a day?

Health experts commonly recommend eight 8-ounce glasses, which equals about 2 liters, or half a gallon a day. This is called the 8×8 rule and is very easy to remember. However, some experts believe that you need to sip on water constantly throughout the day, even when you're not thirsty.

Should I drink a gallon of water a day?

“Drinking a gallon of water a day is not really necessary, but it's not going to hurt you either,” says Czerwony. “Everybody's hydration levels are different, but most people don't need a daily gallon.” Your body is incredibly efficient and will let you know when it is thirsty.

How do doctors flush your kidneys?

Diuretics — to flush out the kidneys, increase urine flow, and rid the body of excess sodium. Blood pressure medications. Medicine to treat anemia. Sodium polystyrene sulfonate or insulin in dextrose to control high potassium levels.

What juice is good for kidneys?

To get the best health benefits, be sure to choose 100% organic water-based cranberry juice. So how does cranberry juice help? It can prevent bacteria from sticking to the walls of your kidneys, which helps prevent an infection from forming in the first place.

Is lemon water good for kidneys?

Drinking lemon water has numerous health benefits and does not cause any harm to the kidneys. Lemon can boost hydration, prevent the formation of kidney stones, create an alkaline atmosphere in the body, and is rich in antioxidants which are responsible to protect against cellular damage.

What does it feel like when something is wrong with your kidneys?

A dull ache that's usually constant. Pain under your rib cage or in your belly. Pain in your side; usually only one side, but sometimes both hurt. Sharp or severe pain that may come in waves.

How can I check my kidneys at home?

One of the best ways to test for CKD and assess kidney damage is a simple urine test which detects the presence of albumin. The smartphone app from Healthy.io enables lay users to conduct a urinalysis test at home and securely share results with their clinicians.

Is it kidney pain or back pain?

Unlike back pain, which usually occurs in the lower back, kidney pain is deeper and higher up the back. The kidneys can be found underneath the ribcage, on each side of the spine. Pain from the kidneys is felt in the sides, or in the middle to upper back (most often under the ribs, to the right or left of the spine).

What happens when kidneys start to shut down?

Your hands or feet may swell. You will feel tired and weak because your body needs clean blood to function properly. Untreated uremia may lead to seizures or coma and will ultimately result in death. If your kidneys stop working completely, you will need to undergo dialysis or kidney transplant.

What causes kidneys to fail?

What causes kidney failure? High blood pressure and diabetes are the two most common causes of kidney failure. They can also become damaged from physical injury, diseases, or other disorders.

What are the 8 signs of kidney failure?

8 Signs You Could Be Suffering From Kidney Disease

  • Your energy levels have plummeted. ...
  • Your skin is noticeably dry and itchy. ...
  • You have to go to the bathroom more often. ...
  • You've got blood in your urine. ...
  • Your urine is usually frothy. ...
  • Your eyes always look puffy. ...
  • Your extremities are swollen. ...
  • You experience frequent muscle cramps.

Is clear urine Good?

Clear urine is a sign of good hydration and a healthy urinary tract. However, if they consistently notice clear urine and also have extreme or unusual thirst, it is best to speak to a doctor.