Why this microbiologist is warning people not to ingest some food dyes

• 6 months ago
• Radio
• Duration 7:22

Research indicates that certain artificial food dyes can produce toxic byproducts when broken down by gut microbes. These dyes are used primarily for their aesthetic appeal despite lacking nutritional value. University of Guelph professor Emma Allen-Vercoe is urging the public to be vigilant, and for regulators and manufacturers to re-evaluate their use.