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The Foods and Juices That Will Help Flush the Kidneys

author image Marie Dannie
Marie Dannie has been a professional journalist since 1991, specializing in nutrition and health topics. She has written for "Woman’s Own," the "Daily Mail," the "Daily Mirror" and the "Telegraph." She is a registered nutritionist and holds a Bachelor of Science degree with honors in food science from the University of Nottingham.
The Foods and Juices That Will Help Flush the Kidneys
A woman cuts up grapefruit. Photo Credit: YekoPhotoStudio/iStock/Getty Images

Kidneys are responsible for filtering waste from your system, so keeping them healthy -- by eating a balanced, nutritious diet -- will keep the rest of your body functioning well as wastes are properly eliminated. Because a poor diet can lead to problems with your kidneys, such as kidney stones or chronic kidney disease, eating foods rich in calcium and citrate, as well as drinking adequate amounts of water, can help your kidneys flush out all necessary waste.

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Drinking Enough Water

While not technically a juice, water is perhaps one of the most important beverages you can consume to keep your kidneys healthy. Harvard Health Publications considers it one of the primary ways of preventing kidney stones. While there is no recommended daily intake, in general, a minimum of eight 8-ounce glasses of water per day is recommended. This will help you produce around 2 liters of urine, and regular urination will help get rid of excess wastes, while the extra fluid will help dilute any materials in your system that could potentially cause kidney stones.

Kidney Stone-Preventing Cranberry Juice

Cranberry juice has long been associated with kidney health, and a 2003 edition of “BJU International” included a study which found that cranberry juice consumption might help reduce the risk of kidney stone formation. Over a period of 14 days, adult men were given a diet that included regular consumption of cranberry juice. Scientists found that cranberry juice consumption reduced calcium oxalate and phosphate levels, which lowered the risk of kidney stone formation. While the results were promising, further long-term research is still needed.

Yummy Citrus Fruits and Juices

Eating citrus fruits or drinking juices made from citrus fruits can stop small kidney stones from developing into larger, more painful stones. The citric acid found in citrus fruits, such as grapefruits, oranges, lemons and limes, helps break down small kidney stones, as the acid eats away at the calcium oxalate. Citrate, which is used in calcium citrate supplements, is similar to citric acid and is also helpful in breaking down and preventing kidney stones. According to the University of Wisconsin, lemon and lime juice have more citric acid than other juices, including orange and grapefruit.

Kidney Benefits of Kale

The leafy, dark green leaves of kale are chock full of nutrients, including calcium, which helps reduce your risk of developing kidney stones by keeping your body’s oxalate levels low. While kale can be eaten raw or cooked, it can also be made into a juice, using either a blender or a juicer. A 2-cup serving of kale has between 15 percent and 20 percent of the recommended dietary intake of calcium for adult men and women, with 201 milligrams of calcium per serving.

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