BHT
This is what the ingredient is.
BHT (butylated hydroxytoluene) is a synthetic antioxidant chemically related to BHA. Prevents fat oxidation and rancidity.
Here is why it shows up on the label.
Antioxidant preservative for fats and oils. Used in cereals, snack foods, and foods containing fats. Prevents rancidity and extends shelf life.
Here is what food agencies say.
FDA GRAS with limits by food type. Europe sets a suggested daily limit of up to 0.25 milligrams per kilogram of body weight. It is approved in the US, Europe (as E321), and Canada.
Here is what research has found.
Extensively studied for safety. Mixed results in animal studies - some show protective effects, others raise concerns. Regulatory agencies maintain approval at regulated levels. Human data limited.
Here are a few things worth knowing.
Safety debated in scientific community. Some animal studies suggest potential concerns at high doses. Regulatory agencies consider approved levels safe. May cause allergic reactions in sensitive individuals. Usage has declined as alternatives developed.
Sources
- FDA 21 CFR 172.110
- EFSA Opinion 2012
- Toxicology Reviews
How to read this page
We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.