Azo dye New study links tattoo ink to cancer

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A study presented at an American Chemical Society (ACS) conference suggests an azo-containing dye in U.S. tattoo ink may cause cancer. 

According to the American Chemical Society, Dr. John Swierk & his team at Binghamton University (SUNY) studied tattoo pigments using various techniques. 

Inks are largely unregulated in the U.S., according to the ACS. 

The scientific group said tattoos range from lifelike faces to elaborate nature scenes. 

Many people today adorn themselves with these images as a form of self-expression. 

In the U.S., tattoo inks are unregulated, so their ingredients are unknown. 

Researchers have analysed 100 inks & found that ingredient lists are often inaccurate. 

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