Eat or Avoid
E321

Butylated Hydroxytoluene

Also known as: BHT

AntioxidantsPreservatives

Safety rating

Use Sparingly

Eat Away!Generally SafeUse SparinglyAvoid

Purpose and Function

BHT (Butylated Hydroxytoluene) is a synthetic antioxidant that neutralizes free radicals to prevent oxidation of fats and oils, extending shelf life in processed foods, cosmetics, and industrial products.

Commonly found in

  • Cereals and snack foods
  • Baked goods
  • Packaged fats and oils

Key functions

  • Prevents oxidation and rancidity of fats and oils

Potential Risks and Side Effects

  1. 01Recognized as safe by the FDA and EFSA at typical food-use levels
  2. 02Some animal studies suggest a possible cancer link at high doses; human relevance unclear
  3. 03Possible weak estrogenic/endocrine-disrupting effects suggested in some studies, needing more research
  4. 04Rare allergic reactions, more commonly associated with cosmetic/topical use

References

    Related Additives