Drinking green tea helps prevent kidney stones

Nov 13, 2009
Picture of calcium oxalate crystals, changing shape with different amounts of green tea. The flatter crystals form less stable kidney stones that break up easily.

(PhysOrg.com) -- Drinking green tea can help prevent the formation of large kidney stones, report Chinese scientists in the Royal Society of Chemistry journal CrystEngComm.

The researchers have found that compounds in the tea make it difficult for larger stones to form, by changing the shape of mineral crystals that might otherwise clump together.

The smaller stones that are left are painlessly passed out in urine.

Kidney stones affect up to five per cent of the world population, and the prevalence is rising, says Xudong Li at Sichuan University, Chengdu, China, lead author of the article.

Compounds in the tea called phenols bond to the calcium oxalate, making the resulting crystals a different shape and less likely to clump together to form large .

More information: Original article: www.rsc.org/Publishing/Journals/CE/article.asp?doi=b913589h

Provided by Royal Society of Chemistry

Explore further: Making radiation-proof materials for electronics, power plants

add to favorites email to friend print save as pdf

Related Stories

Of mice and men... and kidney stones

Mar 01, 2008

Kidney stones are very common – and painful – in men. About 3 in 20 men (1 in 20 women) in developed countries develop them at some stage. Mice, however, rarely suffer though the precise reasons are unknown. Jeffrey ...

How to ... avoid kidney stones

Jul 17, 2009

These solid masses that form in the kidneys can grow big enough to cause severe pain and even infection as they pass into the urinary tract.

Study finds bacteria may reduce risk for kidney stones

Mar 05, 2008

Researchers from Boston University’s Slone Epidemiology Center have found that the bacteria Oxalobacter formigenes (O. formigenes), a naturally occurring bacterium that has no known side effects, is associated with a 70 ...

Roux-en-Y weight loss surgery raises kidney stone risk

Jun 17, 2009

The most popular type of gastric bypass surgery appears to nearly double the chance that a patient will develop kidney stones, despite earlier assumptions that it would not, Johns Hopkins doctors report in a new study. ...

An apple a day keeps kidney stones away

Aug 13, 2009

Researchers have found another reason to eat well: a healthy diet helps prevent kidney stones. Loading up on fruits, vegetables, nuts, low-fat dairy products, and whole grains, while limiting salt, red and processed meats, ...

Recommended for you

A greener source of polyester—cork trees

23 hours ago

On the scale of earth-friendly materials, you'd be hard pressed to find two that are farther apart than polyester (not at all) and cork (very). In an unexpected twist, however, scientists are figuring out ...

Breakthrough points to new drugs from nature

Apr 16, 2014

Researchers at Griffith University's Eskitis Institute have developed a new technique for discovering natural compounds which could form the basis of novel therapeutic drugs.

User comments : 0

More news stories

A greener source of polyester—cork trees

On the scale of earth-friendly materials, you'd be hard pressed to find two that are farther apart than polyester (not at all) and cork (very). In an unexpected twist, however, scientists are figuring out ...

Cosmologists weigh cosmic filaments and voids

(Phys.org) —Cosmologists have established that much of the stuff of the universe is made of dark matter, a mysterious, invisible substance that can't be directly detected but which exerts a gravitational ...