Are dye free skittles actually better for my kid?
Dye-free Skittles aren't proven to be healthier overall, but the evidence on artificial dyes and hyperactivity is genuinely mixed, so choosing dye-free is a reasonable, low-risk preference rather than a medical necessity.
Health Canada has reviewed the dye-behaviour research and says it isn't strong enough to prove cause and effect, while some clinical trials do show small effects in certain children.
Mixed
Evidence includes one large randomized controlled trial and a meta-analysis of trials showing a small effect, but Health Canada's own review of this same research found it insufficient to prove dyes cause behaviour problems.
What the evidence says
Skittles without dyes are colored using plant or vegetable extracts instead of synthetic dyes like Red 40 or Yellow 5. In terms of sugar, calories, and overall nutrition, dye-free and regular Skittles are basically the same candy, so dye-free isn't a 'healthy' swap in the way fruit or vegetables would be.
The real question is whether synthetic dyes affect kids' behaviour, like making them more hyperactive. A well-known British study put groups of 3-year-olds and 8 to 9-year-olds on drinks with food dye mixes or a plain placebo, without anyone knowing which was which. Researchers found that food additives and hyperactive behaviour in 3-year-old and 8/9-year-old children in the community showed a link. Kids given the dye mixture showed more hyperactive behaviour than kids given the placebo.
A separate analysis pooling fifteen similar trials found artificial food colours had a real but small effect on hyperactivity, and the effect was strongest in trials that first screened for children who seemed sensitive to dyes. This suggests some kids react more than others, and for most children the effect, if it exists, is minor.
Health Canada, the agency that regulates food additives here, has looked at this same body of research. They concluded the evidence isn't strong enough to prove synthetic dyes cause behaviour problems, so they haven't restricted these dyes. Canadian food safety testing reports echo this, noting a suggested correlation that has not been conclusively proven.
So here's the honest picture: there's some real science behind the concern, but it's not settled, and Health Canada doesn't currently see enough proof to act. If you notice your child seems to get wound up or moody after eating dyed candy, trying dye-free versions is a reasonable, harmless experiment. But there's no strong evidence every child needs to avoid dyes, and dye-free candy isn't otherwise better for teeth, weight, or nutrition.
Sources
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Guideline
Food additives: Food colours
Health Canada
Health Canada says current evidence is insufficient to prove dyes cause behaviour effects.
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Guideline
Food colours in selected foods
Canadian Food Inspection Agency
Notes a suggested but not conclusively proven link between dyes and hyperactivity.
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Systematic review
Do artificial food colors promote hyperactivity in children with hyperactive syndromes? A meta-analysis
PubMed
Pooled 15 trials; found a small but real effect, strongest in dye-sensitive children.
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Guideline
Food additives and hyperactive behaviour in 3-year-old and 8/9-year-old children in the community
The Lancet (via PubMed/CFIA reference)
Large randomized trial found dye mixes increased hyperactivity in general-population kids.
✓Reviewed by CH, MD, FRCPC
Reviewed by a specialist physician certified by the Royal College of Physicians and Surgeons of Canada, who has read this answer against the sources listed above and confirmed it reflects them. That is not medical advice about your child. How we review
Answer checked August 5, 2026