(KTNV) -- A group of moms is urging Mars to replace the artificial dye that it uses in its brightly-colored M&M's.
The groups claims that the candy causes some kids to be hyperactive and it is because of the dye.
One mom says that her nine-year-old child's behavior changed drastically after she removed all artificial dyes from his diet.
They say that since Mars has replaced many of the dyes in candy sold overseas, it shouldn't be too hard for the company to start using natural dyes in the United States.
However, there is no scientific research saying food dyes lead to behavioral issues. Research has been done by both sides on the issue.
Mars said it is aware of the Change.org petition. It says all the colors used in its products comply with strict internal quality and safety requirements.
But Mars says the company is constantly evaluating and updating ingredients to fit consumer's needs.
So far, more than 60,000 supports have signed the online petition.