TRUE! Green tea may prevent kidney stones!


Kidney stones affect approximately five per cent of the total world’s population.

Around 75 per cent of these stones are composed of calcium, the rest are acids and other minerals. The most common stone type is calcium oxalate.

Researchers claim that kidney stone formation starts when high mineral concentrations accumulate in the urinary tract and clump together to form crystals, ultimately turning into stones.

Although experts have not yet discovered why they form, lack of exercise and improper diet appear to play a role here.

Contrary to previous studies green tea seems to protect, not contribute to, the formation of urinary stones.

Study 1:
green tea prevents painful stones

According to a 2010 study drinking green tea may help prevent these painful stones from developing.

Previously, experts thought green tea would form stones because it affects the crystallization. Now, however, Chinese researchers found that the calcium oxalate crystals become less stable with green tea extract, turning into a different, much flatter shape, and breaking more easily.

As a result, they are less likely to clump together and form large urinary stones. The smaller crystals effortlessly continue their way through our kidney without forming stones.

One of the green tea ingredients, polyphenols, seem to be the reason for this positive twist.

Study 2: yep…no more stones…

Another study performed back in 1998, of more than 80,000 women, aged 40 to 65 years, confirms these findings as they concluded tea drinking was inversely associated with the development of urinary stones.

In other words:

tea reduces the risk in kidney stone formation by 8 per cent for women!

Frequent consumption of green tea may help you avoid the misery of kidney stone formation. And green tea may have other positive impacts on your health, thanks to its high antioxidant content.

Green tea and CHOLESTEROL.

Read more about green tea and HEALTH.

Check out the BENEFITS of DRINKING green tea.

Find the best green tea SMOOTHIES here.

Find out all about green tea: green tea FACTS.

Go from kidney stones to the HOME page.

Chen Z, Wang C, Zhou H, Sang L and Li X. Modulation of calcium oxalate crystallization by commonly consumed green tea. Cryst Eng Comm, 2010(12):845-852.

Curhan GC, Willett WC, Speizer FE, Stampfer MJ. Beverage use and risk for kidneystones in women. Ann Intern Med. 1998;128:534-540.

Massey LK. Dietary influences on urinary oxalate and risk of kidneystones. Frontiers in Bioscience. 2003(8); s584-594.