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Can parsley cleanse the kidneys?

Kidney health is extremely important. The kidneys filter waste and excess fluid from the blood to be excreted through urine. When the kidneys are not functioning properly, waste and fluid can build up in the body, leading to swelling, high blood pressure, and other health issues. Some people believe that parsley can help cleanse and detox the kidneys due to its diuretic effects. In this article, we’ll explore the evidence behind using parsley to support kidney health.


Parsley is an herb commonly used for cooking, but some also consume it for its potential health benefits. It has a light, fresh taste and can be added to salads, soups, and more. Parsley contains several nutrients that may be beneficial for overall health, including vitamin K, vitamin C, and antioxidant flavonoids. Some proponents suggest that parsley can also cleanse and detox the kidneys.

The kidneys are two bean-shaped organs that filter waste and excess fluid from the bloodstream. As blood flows through the kidneys, they help remove urea, mineral salts, toxins, and other materials. The kidneys also regulate levels of electrolytes like sodium, potassium, and phosphate. They are essential for overall health and normal bodily functions. However, many factors like chronic diseases, medications, and poor diet can take a toll on kidney health over time.

When the kidneys become damaged, waste can build up in the blood rather than being excreted through urine. This can cause problems like high blood pressure, swelling in the hands and feet, and electrolyte imbalances. That’s why finding ways to support kidney health and function is important, especially for those at risk of kidney disease. Some believe that parsley may help filter and flush out the kidneys due to its diuretic properties.

Diuretic Effects of Parsley

One of the primary traditional uses of parsley is as a diuretic. Diuretics are substances that increase the production of urine. They help the body get rid of excess fluid and salt through urination. Parsley’s diuretic effects come mostly from a compound called apiol.

Apiol makes up about 2-7% of parsley’s essential oil. Research indicates that apiol inhibits sodium ion reabsorption in the kidneys. This leads to increased urine output and fluid excretion from the body. Studies in rats have shown that apiol-containing parsley extracts significantly increase urine output over a 24-hour period.

In addition to apiol, parsley contains other diuretic compounds like myristicin, limonene, and eugenol. The combination of these compounds is likely responsible for parsley’s diuretic effects when consumed.

Compound Percentage in Parsley Oil Diuretic Mechanism
Apiol 2-7% Inhibits sodium reabsorption
Myristicin 12-27% Increases glomerular filtration rate
Limonene 1-13% Increases renal blood flow
Eugenol Trace amounts Inhibits antidiuretic hormone

Through various mechanisms, these diuretic compounds in parsley help promote increased urine production and excretion of fluids, salts, and waste from the kidneys.

Potential Benefits for the Kidneys

Research suggests parsley’s diuretic effects may translate to benefits for overall kidney health and function:

  • Reduces fluid retention: By increasing urine output, parsley may help relieve symptoms of fluid retention like edema, swelling, and bloating.
  • Supports filtration: The diuretic effects help flush the kidneys and may support normal filtration functions.
  • Cleanses the urinary tract: Increased urine flushes out bacteria and other debris, keeping the urinary tract clean.
  • Removes toxins: The increase in urination helps eliminate metabolic waste, salt, toxins, and excess water from the body.
  • Lowers blood pressure: The fluid and salt excretion induced by parsley can help reduce high blood pressure.

For those looking to reduce fluid retention, cleanse their kidneys, or lower blood pressure, parsley’s diuretic effects may be helpful. More human studies are still needed, but the current evidence indicates parsley can promote urine production and salt/fluid excretion from the kidneys.

Using Parsley to Support Kidney Health

For those interested in using parsley for kidney health, there are several ways it can be incorporated into your diet or regimen:

  • Add it to dishes: Use fresh parsley in salads, soups, smoothies, and sauces. The leaf, stem, and root are all edible.
  • Juice it: Drink fresh parsley juice or add it to juices with other vegetables like cucumber and celery.
  • Make parsley water: Infuse water with fresh parsley leaves overnight to create a mild diuretic water.
  • Take parsley supplements: Parsley root supplements in capsule or tincture form provide concentrated nutritional benefits.
  • Do a parsley cleanse: Some cleanses suggest drinking parsley juice and water for several days to flush the kidneys.

Aim for 1-2 tablespoons of fresh parsley daily, either divided into meals or as a juice/water infusion. Dried parsley loses some potency. Parsley is very safe, but be mindful of your fluid intake if also taking diuretic medications.

Potential Side Effects and Precautions

For most people, eating moderate amounts of parsley as a food is considered very safe. However, there are some precautions to keep in mind:

  • May interact with certain medications, including diuretics, lithium, and blood thinners. Check with your doctor.
  • Large doses can cause intestinal upset, kidney inflammation, or photosensitivity.
  • Avoid large amounts during pregnancy. Can have a stimulant effect on the uterus.
  • May increase the risk of kidney stones in those predisposed.
  • Consume plenty of water to stay hydrated when using parsley for its diuretic effects.

It’s also important to note that parsley should not be used in place of standard medical treatment for kidney disease or other health conditions. Always talk to your doctor first before making major changes.

The Bottom Line

Parsley is an aromatic herb often used for its fresh, herbal flavor in cooking. But it also has a long history of use as a diuretic due to compounds like apiol, myristicin, and limonene. Research indicates these active compounds can increase urine production and excretion of water, salts, toxins, and waste from the body.

This diuretic effect may translate to benefits for the kidneys. By flushing the kidneys and urinary tract, parsley may help reduce fluid retention, cleanse the kidneys of debris, and support normal filtration. However, human studies are still limited.

Adding parsley to your diet in moderation or drinking parsley water/juice may support kidney health, especially if you struggle with fluid retention or edema. But check with your doctor first if taking medications or have kidney disease. While promising, more research is still needed on parsley’s effects on kidney function in humans.