Link between food dyes, childhood hyperactivity gets renewed attention

摘要

When it comes to the safety of dyeing food, the one true shade is gray. Artificial colorings have been around for decades, and for just about as long, people have questioned whether tinted food is a good idea. In the 1800s, when merchants colored their products with outright poisons, critics had a pretty good case. Today's safety questions, though, aren't nearly so black and white-and neither are the answers.