FDA Is Reviewing BHT and ADA in Food: What the 2026 Reassessment Means for Your Labels

If you have ever turned over a cereal box and squinted at “BHT added to preserve freshness,” you already know this additive exists. What you may not know is that on May 12, 2026, the FDA finalized a new formal process for revisiting previously approved food chemicals and chose BHT and ADA as the first two substances under review. (FoodNavigator-USA)

This post covers what BHT and ADA actually are, what the FDA review involves, and what you can do about it today.

What Are BHT and ADA, and Why Are They in Food?

BHT stands for butylated hydroxytoluene. It is a synthetic antioxidant derived from toluene. (FSCIChem) Manufacturers add it to fats and oils in packaged foods to slow oxidation. The practical effect: the food does not go rancid as quickly. You will find it in many breakfast cereals, snack crackers, chewing gum, packaged baked goods, and dry baking mixes.

A quick note to avoid confusion: BHA (butylated hydroxyanisole) is a different compound. BHA is derived from anisole; BHT is derived from toluene. They have different chemical structures, different solubility profiles, and different primary food uses. (FSCIChem) They often appear together on labels because they work well in combination, but the FDA has opened separate review processes for each. The BHA reassessment preceded this one. This post focuses on BHT. If you want the BHA background first, see our BHA in food explainer on NoJunk.

ADA stands for azodicarbonamide. It is a flour treatment agent used as a dough conditioner and bleaching agent in commercial bread and cereal flour. (FoodNavigator-USA) In the United States, it is approved for use at concentrations up to 45 parts per million. (21 CFR 172.806)

You have probably heard ADA called the “yoga mat chemical.” That nickname came from the fact that azodicarbonamide is also used as a blowing agent in foam rubber manufacturing, including in yoga mats. (Wikipedia; EWG) The molecule is chemically the same in both applications. The formulation, the concentration, and the purpose are different. (FoodFacts) As a flour conditioner in bread, ADA is used at very low concentrations to improve dough handling. In foam rubber manufacturing, it acts as a foaming agent at much higher concentrations. The compound is the same; the two products are not.

What Is the FDA Actually Doing Right Now?

On May 12, 2026, the FDA finalized a program called the “Enhanced Systematic Process for Post-Market Assessment of Chemicals in Food” and launched BHT and ADA as its first two subjects. (FoodNavigator-USA; FDA press announcement)

Three things to understand about this process:

It is not a recall. Both additives remain approved and legal to use. The review does not pull them from products.

It is a formal re-examination. The FDA is reviewing whether the original safety approvals for these substances are still supported by current science. Much of the foundational data for substances like BHT dates back several decades.

There is a public comment period. The comment window is open through July 13, 2026. (FoodNavigator-USA) Anyone can submit comments, questions, or links to scientific studies to the FDA’s official docket. To participate, go to regulations.gov and search for the relevant docket number.

The term “post-market” in the program name is deliberate: these substances are already in commerce. The FDA is not responding to a new product application. It is revisiting what it already allowed.

What Foods Commonly Contain BHT?

BHT appears in many common packaged foods, mainly those containing fats or oils that need to stay stable over time. Common examples include:

• Breakfast cereals (it is often listed on the inner liner bag rather than the outer cardboard box)
• Crackers, chips, and other dry snack foods
• Chewing gum
• Vegetable shortening and some cooking oils
• Instant noodle products
• Packaged baked goods and dry baking mixes

Manufacturers are required to list BHT by name on the ingredient label when it is added to the food itself. Look for “BHT” or “butylated hydroxytoluene.” Some products note “BHT added to packaging to maintain freshness,” which means the additive is in the packaging material rather than the food, though migration between the two can occur.

ADA is more specific in its application. You will find it primarily in commercial sliced bread, hamburger buns, and other high-volume yeast breads. Artisan breads, organic breads, and sprouted grain breads typically do not use it.

How Is This Different from the BHA Review?

BHA and BHT are frequently grouped together. They have similar names, similar functions, and they often appear on the same label. But they are distinct molecules derived from different parent compounds, with different chemical behaviours. (FSCIChem)

The FDA’s new post-market program is reviewing them on separate tracks. The BHA reassessment began before this announcement. BHT and ADA entered the queue together on May 12, 2026. (FoodNavigator-USA)

If a product contains both BHA and BHT, both are now under active review. If it contains only one, only that compound is currently subject to a formal reassessment.

Should You Change What You Buy Right Now?

The FDA review does not mean BHT or ADA have been found unsafe. What it means is that the FDA considers the existing safety evaluations for these substances old enough to warrant a fresh look.

If you want to reduce exposure while the review runs, the practical path is label reading. Both additives are required to appear by name in the ingredients list. Choosing whole foods, fresh bread from a bakery, and products with shorter ingredient lists will naturally reduce exposure to both.

If you would rather not scan every label in the aisle, NoJunk flags BHT, ADA, and over 100 other additives when you scan a product’s barcode. You get the information before you put it in the cart.

Last reviewed: 2026-05-30