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Named unexpected cause of problems with teeth

Названа неожиданная причина проблем с зубамиTeeth decay from tea bags

Scientists from the Medical College at Washington University in St. Louis found that instant tea contains dangerously high quantities of fluoride.

So, in packaged tea with normal strength was present in 6.5 parts of fluoride per million, which exceeds the allowable concentration. The contents of fluoride in different teas varied from 1 to 6.5 parts per million.

The maximum allowable concentration of fluoride in drinking water is 4 parts per million, while bottled mineral water should not contain more than 2.4 parts per million of fluorides, write more.

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According to one of the authors of the study Professor Michael white, the specialists know about the ability of tea leaves to accumulate fluoride, coming from the soil and water. You need to understand how depends on the fluoride content of teas and year of its collection, said the Professor. By the way, contained in tea fluoride in moderate doses can be good for your teeth and strengthen bones.

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