The FDA is set to review the link between food dyes and ADHD and decide on whether warning labels should be put on foods that use them. A background document, however, already indicated that the government agency has determined through extensive research that no causal relationship has been established between food dyes and ADHD.

Food dyes are used in almost any food people can buy in the market these days. However, groups such as CSPI (Center for Science in the Public Interest) are saying that these chemicals that are used to make food look more pleasing to the eyes have a direct effect on aggravating the symptoms of ADHD.

Food dyes, which were originally synthesized from coal tar are now being synthesized from petroleum. Because of the fact that they are cheaper than natural food coloring, companies use them more often in their manufacturing process. However, since food dyes are not pure chemicals, they can contain a lot of impurities coming from chemicals used to manufacture them.

At the moment, there are around 9 different colors allowed by the FDA, and each of these has its own health risks and problems associated with using them. However, the issues surrounding these food dyes can be summed up by the fact that they can be toxic at certain levels.