ALSOFOUNDINBHA (Butylated hydroxyanisole)
IARC Group 2BKeeps chips fresh. Listed as 'possibly carcinogenic to humans.' Also listed on labels as Butylated hydroxyanisole, E320.
E-number: E320
What it is
A synthetic antioxidant that stops fats and oils from going rancid — the reason a bag of chips tastes the same in month three as day one. It works so well it's also in cosmetics, animal feed, and the packaging itself.
Why it's in food
Rancid fat is the shelf-life killer, and BHA is cheap insurance against it. A trace protects an entire product through warehouses, trucks, and your pantry.
US vs EU status
United States
Here's the split ticket: the FDA classifies BHA as GRAS — 'generally recognized as safe' — while the US National Toxicology Program lists it as 'reasonably anticipated to be a human carcinogen.' Both are official US government positions, on the record, right now. California requires a Prop 65 warning. It remains legal and common.
European Union
Permitted as E320 with tight dose limits, re-affirmed by Europe's regulator in 2011. Japan is the notable restrictor, confining BHA to narrow uses. The 'possibly carcinogenic' classification comes from the WHO's cancer agency, based on tumors in the forestomach of rodents — an organ humans don't have, which is exactly where the scientific fight lives.
Common products
- Breakfast cereals — sometimes via the bag, not the food
- Potato chips and snack mixes
- Sausage, jerky, and dehydrated meats
- Chewing gum
- Shortening and butter spreads
- Lipstick and cosmetics (same molecule, different aisle)
Cleaner swaps
- Vitamin E (mixed tocopherols) — the natural antioxidant swap
- Rosemary extract
- Cereals and snacks labeled 'No BHA/BHT'
Case note
One arm of the US government lists BHA as 'reasonably anticipated to be a human carcinogen.' Another arm certifies it 'generally recognized as safe.' Both sentences are on the books at the same time, about the same molecule in your cereal. This file exists because you shouldn't need to subpoena two agencies to read a breakfast label.
FAQ
Is BHA a carcinogen or not?
Depends which US agency you ask — literally. The National Toxicology Program says 'reasonably anticipated to be a human carcinogen,' based on consistent tumors in rodents. The FDA says GRAS, leaning on the fact that those tumors grew in the forestomach, an organ people don't have. The WHO splits the difference at 'possibly carcinogenic.' Three referees, three cards.
What's the difference between BHA and BHT?
Siblings with different rap sheets. They do the same job and often appear together, but the carcinogen listings — WHO Group 2B, the NTP designation, Prop 65 — attach to BHA. BHT's evidence is more mixed and it carries none of those labels. Lumping them together is common and, strictly speaking, unfair to BHT.
How do I avoid BHA if it's in the packaging?
That's the catch — when BHA is applied to the liner bag to preserve the cereal, US rules can leave it off the ingredient list. Your practical filters: brands that advertise 'No BHA/BHT,' shorter-shelf-life products, and the fresh perimeter of the store. You can't read your way around a bag treatment; you can only shop around it.
Is BHA banned anywhere?
No major market bans it in food outright. Japan restricts it to narrow uses, the EU caps doses tightly, and California mandates a cancer warning. The pattern is containment rather than prohibition — every regulator hedging the same unresolved rodent data a little differently.
How the FDA decides what reaches your table and your medicine cabinet — and how it learned to decide.
Related files
Potassium Bromate Bromated flour
Banned in the EU, UK, Canada, and China. Still in US flour.
Open file →BHT Butylated hydroxytoluene
BHA's sibling — restricted in parts of Europe and Japan.
Open file →Sodium Nitrite Curing salt
Cures bacon pink. Can form nitrosamines at high heat.
Open file →Sodium Benzoate Benzoate of soda
Fine alone. Combined with vitamin C, it can form benzene.
Open file →