Food Dyes make food look more appealing, but they should be avoided at all costs. They don’t belong in your body. Yellow#5; Blue#1; Blue#2 increase the risk of tumors in the Brain. Candy is loaded with so many dyes, and they contribute to the following: Allergies; ADHD; Learning difficulties; Hyperactivity; Mood disorders; Cancer of the Bladder and Thyroid Disease, to just list a few serious health issues that food dyes are connected to.