Is Butylated Hydroxytoluene Safe During Pregnancy?
The facts: Butylated Hydroxytoluene is banned in 1 country/region (including Japan (banned for food use)), though the FDA still allows it in the US. We can't tell you whether it's safe for your pregnancy — that's a conversation for your OB-GYN or midwife. What we can do is show you the regulatory facts and flag Butylated Hydroxytoluene on any product's label so you can decide with your provider. Commonly found in: Kellogg's cereals (certain US formulations), Post cereals, Some potato chips.
TL;DR: Butylated Hydroxytoluene is banned in the EU and allowed in the US. Here's what to know if you're pregnant.
Butylated Hydroxytoluene: regulatory status at a glance
| EU status | Banned |
|---|---|
| US status | Allowed |
| Risk level (regulatory) | — |
| Where it shows up | Kellogg's cereals (certain US formulations), Post cereals, Some potato chips, Vegetable oils and shortenings, Some chewing gum, Various packaged snacks |
What is Butylated Hydroxytoluene?
Butylated hydroxytoluene (BHT) is a synthetic lipophilic phenolic antioxidant preservative derived from petroleum. It is a white crystalline solid with chemical formula C15H24O. Like BHA, it prevents fat oxidation and is widely used in food, cosmetics, pharmaceuticals, jet fuel, and rubber.
Why is Butylated Hydroxytoluene used in food?
BHT prevents oxidative rancidity of fats, oils, and fat-containing foods, extending shelf life. It is heat-stable and effective at very low concentrations. Used in cereals, snack foods, oils, and cosmetics. Often used synergistically with BHA.
What regulators have flagged about Butylated Hydroxytoluene
BHT's carcinogenicity profile is complex and bidirectional. Some NTP bioassays found liver tumors in female mice at high doses, while other studies suggested BHT might inhibit tumor initiation in certain contexts. A 1986 NTP bioassay found liver tumors in female mice but anti-carcinogenic effects in the rat forestomach — making BHT's net carcinogenicity uncertain. IARC has not formally classified BHT in a specific Group due to this conflicting evidence. The NTP notes that BHT's carcinogenicity data are complex. The 'Report on Carcinogens' does not currently list BHT, unlike BHA, but the NTP has noted inconclusive evidence. Potential endocrine disruption: a 2017 study in Environmental Science & Technology found BHT disrupted thyroid hormone levels in female rats. Multiple animal studies have demonstrated weak estrogenic effects. The American Academy of Pediatrics' 2018 policy statement on food additives mentioned BHT as a synthetic preservative warranting reduced childhood exposure. Kellogg's Frosted Flakes in the US contains BHT to preserve freshness; the European version uses mixed tocopherols (vitamin E) instead — a commercially meaningful difference demonstrating feasibility of substitution. Japan banned BHT for food use based on its precautionary approach. The EU restricts it with ADI-based maximum permitted levels.
For educational use only. This page summarizes the regulatory status of Butylated Hydroxytoluene with citations to the primary sources below. It is not medical advice and is not pregnancy-specific medical guidance. Consult your OB-GYN or midwife for decisions about your pregnancy.
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Butylated Hydroxytoluene and pregnancy: common questions
Is Butylated Hydroxytoluene banned anywhere?
Yes. Butylated Hydroxytoluene is banned in Japan (banned for food use); restricted in European Union (ADI-based restrictions), United Kingdom, Australia (restricted maximum levels). The FDA still allows it in the US.
Should I avoid Butylated Hydroxytoluene during pregnancy?
That's a decision for you and your OB-GYN or midwife — we don't give medical advice. What we can tell you is the regulatory status above. Many people choose to limit additives during pregnancy out of caution; bring this page and its sources to your next appointment.
What foods contain Butylated Hydroxytoluene?
Commonly found in Kellogg's cereals (certain US formulations), Post cereals, Some potato chips, Vegetable oils and shortenings, Some chewing gum, Various packaged snacks. Scan any product's barcode to check its label for Butylated Hydroxytoluene.
What can I use instead of Butylated Hydroxytoluene?
Mixed tocopherols (vitamin E), rosemary extract, ascorbyl palmitate, and natural antioxidant blends replace BHT effectively. Kellogg's and Post reformulate European versions of the same cereals with mixed tocopherols instead of BHT. Modifie See the pregnancy-conscious swaps below.
Scan any product's barcode and instantly see if it contains Butylated Hydroxytoluene or other ingredients restricted overseas.
Scan a product free →Other ingredients to check during pregnancy
Sources
- NTP Carcinogenesis Studies of BHT (Technical Report 150) — NTP/NIH
- EFSA Scientific Opinion on BHT (E 321) 2012 — EFSA
- AAP 2018 Policy Statement on Food Additives — AAP
- EWG on BHT in food and cosmetics — EWG
Our scores are never influenced by brands. Last updated 6/10/2026.