The food dyes in your toddler's snacks.
What the EU banned and the US didn't.
Red 40 is in the yogurt. Yellow 5 is in the mac and cheese. Blue 1 is in the birthday cake. The EU put warning labels on them. We put them in the grocery cart.
In 2007, a study at the University of Southampton changed the conversation in Europe forever. Researchers gave 3-year-olds and 8-9-year-olds drinks containing artificial food colors and sodium benzoate. The result: significant increases in hyperactive behavior — in the general population, not just children diagnosed with ADHD.
The EU responded. Every food containing these dyes now carries a mandatory warning: "may have an adverse effect on activity and attention in children." British manufacturers — Mars, Nestlé, Kellogg's — quietly reformulated. The UK versions of Skittles, M&Ms, and Fanta are now made with natural colors.
The American versions are not.
Same company. Same brand. Same packaging. Different formulas. Your kid's Fruit Loops in London use beetroot and turmeric for color. Your kid's Fruit Loops in New York use Red 40, Yellow 6, and Blue 1.
"I dare a stranger to sit next to a spicy toddler. I give them minutes after the seatbelt sign comes off to switch."
— UES mom groupThe Southampton Six
The study tested six artificial colors — now known as the "Southampton Six" — plus sodium benzoate as a preservative. These are the ingredients that triggered EU action:
Red 40 (Allura Red)
E129The most widely used food dye in the US. In cereal, candy, yogurt, sports drinks, fruit snacks. Southampton Six.
EU Warning LabelYellow 5 (Tartrazine)
E102In mac and cheese, chips, pickles, mustard. May trigger reactions in aspirin-sensitive individuals. Southampton Six.
EU Warning LabelYellow 6 (Sunset Yellow)
E110In cereals, candy, baked goods, beverages. Voluntarily removed by most UK manufacturers after EU ruling.
EU Warning LabelRed 3 (Erythrosine)
E127Banned in US cosmetics since 1990 for causing thyroid tumors in rats. Still legal in your child's candy. Thyroid disruptor.
Banned in EU (most uses)Blue 1 (Brilliant Blue)
E133In candy, beverages, ice cream. Feingold-listed. Less studied than Red 40 but same synthetic coal-tar origin.
Feingold ListedBlue 2 (Indigo Carmine)
E132In candy, pet food, diagnostic procedures. Linked to brain tumors in male rats. CSPI says avoid.
CSPI: AvoidAll six are synthetic coal-tar dyes. All six are still fully approved in the United States with no warning labels. The FDA's position, as of 2026: "a causal relationship between exposure to color additives and hyperactivity in children has not been established."
The EU didn't wait for "established." They applied the precautionary principle. Two continents looked at the same evidence and made different choices. Your toddler lives on one of them.
Beyond the Six — the ones nobody talks about
The Southampton study got the headlines. But there are other additives in your toddler's food that quietly raise the same concerns:
BHA (butylated hydroxyanisole) — an antioxidant preservative in cereal, snack foods, and chewing gum. IARC classifies it as a Group 2B possible carcinogen. Listed on California's Prop 65. Feingold-listed. An endocrine disruptor. Still GRAS in the US.
BHT (butylated hydroxytoluene) — BHA's cousin. Same foods, same concerns. Often used together. Endocrine disrupting. Being phased out by some manufacturers voluntarily — not by regulation.
TBHQ (tert-butylhydroquinone) — a preservative in fast food fryer oil, frozen pizza, crackers. Immune system effects in animal studies. Banned in Japan. FDA limits it to 0.02% of oil content. Feingold-listed.
Sodium benzoate — a preservative in soft drinks, juice, condiments. The Southampton study tested it alongside the six dyes. Combined with vitamin C (ascorbic acid), it can form benzene — a known carcinogen. Yes, in juice boxes.
Calcium propionate — the mold inhibitor in almost every loaf of bread your toddler eats. Australian studies link it to irritability, restlessness, and sleep disturbance in children. Nobody talks about this one.
The same brand, two formulas
This is the part that's hard to explain without getting angry. Major food companies already make versions of their products without artificial dyes — they just sell them in countries where the law requires it.
| Product | US Version | UK/EU Version |
|---|---|---|
| Fanta Orange | Red 40, Yellow 6 | Pumpkin & carrot extract |
| M&Ms | Red 40, Yellow 5, Blue 1, Blue 2 | Beetroot, turmeric, spirulina |
| Kraft Mac & Cheese | Yellow 5, Yellow 6 | Paprika, turmeric |
| Starburst | Red 40, Yellow 5, Blue 1 | Black carrot, paprika, turmeric |
The reformulation is possible. The cost difference is minimal. The companies know it. They just don't do it here because they don't have to.
The phase-out is finally happening
In early 2026, the FDA did something it hasn't done in decades: it started moving. The agency announced plans to phase out petroleum-based synthetic dyes from the US food supply by January 2027.
At the same time, the FDA approved several natural color alternatives:
Beetroot red — a precision-fermented betanin produced by Israeli startup Phytolon using engineered baker's yeast. Intended as the primary Red 40 replacement. The FDA approved it in February 2026, but the effective date was immediately delayed after objections about insufficient long-term safety data and allergenicity concerns. It's approved on paper. It's not settled science yet.
Spirulina extract (expanded uses) — already used in some products. The FDA expanded its approved applications, but stakeholders raised concerns about cadmium contamination and inadequate exposure analysis specifically for children's food categories. Clarity flags spirulina as a heavy metal risk for this reason.
Butterfly pea flower, Galdieria algae blue, and Gardenia blue — three new natural blue dyes approved in 2025, filling the gap left by Blue 1 and Blue 2. Traditional food ingredients with long histories of use in Southeast and East Asian cuisine.
The shift is real. But "natural" doesn't automatically mean "studied." The replacement dyes have far less safety data than the synthetic ones they're replacing — especially for children and pregnant/nursing women. We're trading known risks for unknown ones. That's probably the right trade. But it's worth being honest about what we don't know yet.
What you can actually do
You don't need to become an ingredient detective. But a few simple shifts make a real difference:
Read the back, not the front. "Made with real fruit" can coexist with Red 40 on the same package. The ingredient list is the only thing that matters.
Look for the numbers. Any ingredient that starts with "FD&C" or has an E-number (E102, E110, E129, E127, E131, E132, E133) is a synthetic dye. If it's in a toddler snack, there's almost always an alternative without it.
European brands are your shortcut. If a product is sold in the EU, it either doesn't contain these dyes or it carries a warning. HIPP, Ella's Kitchen, and Organix are naturally colored by default.
Check with Clarity. Paste any ingredient list and get instant ADHD-risk flags, plus the 15+ other safety dimensions. One search, all the signals.
Sources
McCann D, et al. "Food additives and hyperactive behaviour in 3-year-old and 8/9-year-old children in the community." Lancet. 2007;370(9598):1560-7. PMID: 17825405
EFSA Panel on Food Additives and Nutrient Sources. "Scientific Opinion on the re-evaluation of Allura Red AC (E 129)." EFSA Journal. 2009.
Feingold Association of the United States. feingold.org
CSPI. "Chemical Cuisine: Food Additive Safety Ratings." cspinet.org
FDA. "Tracking Food Industry Pledges to Remove Petroleum Based Food Dyes." fda.gov, 2026.
FDA Final Order. "Beetroot Red as a Color Additive in Human Food." Federal Register, February 2026.
He Z, et al. "Red 40 dye causes DNA damage, gut inflammation, and microbiome disruption in mice." 2025.
Clarity Ingredient Safety Database — 14 ADHD-flagged ingredients, 1,046 total. healthai.com/clarity
Does my child need to have ADHD for food dyes to affect them?
No. The Southampton study specifically tested children in the general population — not children with existing ADHD diagnoses. The increased hyperactivity was observed across the board. Children with ADHD may be more sensitive, but the behavioral effects were seen in neurotypical children too.
If the FDA says they're safe, why does the EU disagree?
Different standards of evidence, different regulatory philosophy. The FDA requires "established" causal proof before acting. The EU applies the precautionary principle — if the evidence suggests risk, act before proof is conclusive. Both looked at the same Southampton study. One required warning labels. The other didn't. The dyes haven't changed. The science hasn't changed. The regulatory threshold is what's different.
Are natural food dyes actually better?
For ADHD and behavioral concerns, yes — they don't carry the same links to hyperactivity. Beet juice, turmeric, spirulina, paprika extract, and annatto are common natural alternatives. Carmine (E120, from cochineal insects) is natural but can trigger allergic reactions in rare cases. Overall, natural dyes are not associated with the behavioral effects seen with synthetic coal-tar dyes.
What about Red 3 and thyroid cancer?
Red 3 (Erythrosine) caused thyroid tumors in rats at high doses. The FDA banned it from cosmetics in 1990 but never finalized a proposed food ban. It inhibits thyroid peroxidase — the enzyme that makes thyroid hormones. It's still in maraschino cherries, some candy, and popsicles. The EU has banned it for most food uses. Clarity rates it as Avoid.
Can food dyes affect my baby through breast milk?
There is limited research on whether synthetic food dyes transfer into breast milk at meaningful concentrations. Most dyes are poorly absorbed from the GI tract. However, given the absence of nutritional benefit and the availability of alternatives, avoiding synthetic dyes during breastfeeding is a reasonable precaution if your infant seems sensitive.
What does the Feingold diet actually eliminate?
The Feingold diet removes synthetic food dyes, artificial flavors, and certain preservatives (BHA, BHT, TBHQ). It was developed by pediatric allergist Dr. Ben Feingold in the 1970s. While not universally accepted as an ADHD treatment, many families report behavioral improvements. The evidence from the Southampton study supports the dye component of the program.
Is the FDA really banning food dyes?
Yes — the FDA announced plans to phase out petroleum-based synthetic food dyes from the US food supply by January 2027. This includes Red 40, Yellow 5, Yellow 6, and others. The agency is also tracking voluntary industry pledges to reformulate. In parallel, several natural color alternatives have been approved, including beetroot red, butterfly pea flower extract, and expanded spirulina uses. The phase-out is underway, but timelines may shift depending on industry compliance.
What is beetroot red and is it safe?
Beetroot red is a natural red dye produced via precision fermentation — engineered baker's yeast that produces betanin, the pigment found in red beets. The FDA approved it in February 2026 as a Red 40 replacement. However, the effective date was immediately delayed after objections from consumer groups citing insufficient long-term carcinogenicity and allergenicity data. It does not carry the ADHD-linked behavioral concerns of synthetic dyes, but its long-term safety profile in children is not yet established.
What are the new natural food dyes approved by the FDA?
In 2025-2026, the FDA approved or expanded several natural color additives: beetroot red (precision-fermented betanin), butterfly pea flower extract (blue/purple), Galdieria algae extract (blue), gardenia genipin blue, and expanded uses for spirulina extract. These are intended to replace synthetic coal-tar dyes like Red 40, Blue 1, and Blue 2. Most have traditional food use histories in Asian and Southeast Asian cuisine. Spirulina carries a cadmium contamination risk that varies by source.
Are natural food dyes safe during pregnancy and breastfeeding?
Most natural food dyes (beet juice, turmeric, paprika, annatto) have long histories of food use and are generally considered safe in food amounts. The newer FDA-approved dyes (beetroot red via fermentation, Galdieria blue) have less pregnancy and lactation-specific data. None carry the behavioral concerns of synthetic dyes. Clarity flags each natural dye individually — because "natural" is a starting point, not a safety verdict.
Read the label.
Or let Clarity read it for you.
Paste any ingredient list and get instant ADHD-risk flags, toddler safety ratings, and 15+ other safety signals. One search.
Check an Ingredient →Clarity is an informational tool and does not constitute medical advice. The behavioral effects of food additives vary between individuals. If you have concerns about your child's behavior or diet, consult your pediatrician. The information above is based on published peer-reviewed research and the Clarity validated ingredient database.