FD&C stands for Food, Drugs & Cosmetics. These colors are approved by the FDA to be used in Food, Drugs & Cosmetics. They are artificial colors. Most are derived from coal tar, a petrochemical which is known to cause cancer.
Now, while the FD&C colors themselves may not be "known" to cause cancer, many are potential carcinogens or may be contaminated with cancer-causing chemicals.
FD&C Colors are certified by the FDA to not contain more than 10 parts per million (ppm) of lead and arsenic, both of which are poisonous to the human body. The FDA does not address any other harmful effects these colors may have on human health.
Sometimes you will just see ingredients like Red 40 or Yellow No. 5. They're still FD&C colors. Any time you see a color with a number on a food package, it's an FD&C color.
These artificial colors can contribute to hyperactivity in children. They may also contribute to learning and visual disorders and nerve damage.
Coal tar is not a food and was never meant to be consumed by humans, and like most food additives, has never been proven safe.
Learn more about food additives and get free tips here.
