London: Tea drinkers who opt for cheaper supermarket blends could be at a higher risk of bone and teeth problems, researchers, including an Indian origin scientist, have claimed. Many supermarket value brands have been found to contain potentially harmful levels of fluoride, a mineral that can severely damage bones if consumed in large amounts, researchers said. Levels of fluoride found in 38 tea products were compared with each other and to the US National Academy of Sciences` (NAS) daily dietary reference intake in the research by Laura Chan, Professor Aradhana Mehra and Professor Paul Lynch from the University of Derby London.
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