The Hidden Dangers of Red Dye 40
Europe makes this dye carry a warning label for children. America puts it in cereal. Here is what the research actually says.
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Ingredient exposés built on public records, regulator filings, and peer-reviewed research — written in plain words, with every claim sourced.
Europe makes this dye carry a warning label for children. America puts it in cereal. Here is what the research actually says.
One of these has a worse reputation. The science says the real problem is the one they share.
The FDA told industry to remove them by 2020. A labeling loophole lets "0g trans fat" mean something else.
It started with a letter in 1968. Fifty years of research later, the story is more boring — and more honest — than the rumor.
The WHO now says diet sweeteners don't help with weight control. And the aspartame debate is a real argument between experts.
Developed in the 1950s, everywhere by the 1980s, fading since 1999. The deepest look we've done at America's most argued-about ingredient.
Twelve of the most debated ingredients in American food, rated High / Medium / Low by our editors — with plain-word explanations and label aliases so you can spot them in the store.
From Red 40 to carrageenan, each with E-numbers, aliases, and risk bullets.
High, Medium, Low — our editorial judgment, shown next to the evidence.
Sweeteners, dyes, preservatives, emulsifiers, and more. Search and filter live.
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