Florida subpoenas General Mills over cancer-linked bread additive

One ingredient hiding in some packaged baked goods has become the center of a health debate. Florida Attorney General James Uthmeier has launched an investigation into General Mills, the company behind Pillsbury, over its use of potassium bromate, a dough-strengthening additive that's already banned in California (starting in 2027) and several countries because of cancer concerns. While no lawsuits have been filed, Florida is asking a lot of questions.

You likely missed it until now

Unless you are the type of person who reads bread labels for fun, you have probably never noticed it. Potassium bromate is a flour additive that helps dough become stronger and more elastic. It also speeds up the bread-making process, making it attractive for large-scale commercial baking.

In other words, it is one of those behind-the-scenes ingredients that helps factories churn out fluffy loaves faster. The problem is that scientists have been debating its safety for decades.

High doses of this additive caused cancer in lab rats

Research has shown that high doses of potassium bromate caused cancer in laboratory rats, particularly affecting the kidneys and thyroid. That doesn't automatically mean eating a slice of bread is dangerous. The FDA still allows potassium bromate in flour at very small amounts, and says that when baked properly, most of the chemical breaks down during the baking process. But "most" isn't the same as "all."

One U.K. study found measurable traces of the additive remained in nearly one-third of packaged breads tested after baking. This finding has kept the debate alive among scientists, regulators, and consumer advocates.

Florida wants answers, not lawsuits (yet)

Uthmeier has issued a civil subpoena requesting information from General Mills, including which products contain potassium bromate, what safety research the company has reviewed, what information has been shared with consumers, and what company executives knew about any potential health risks.

The attorney general emphasized that this is an investigation, not a lawsuit. "This is again just the initial aspect of an investigation," he said during a press conference.

The nationwide crackdown on food additives

Florida is being proactive about this as states have become increasingly aggressive about regulating food additives, especially those found in ultra-processed foods. California passed a law banning potassium bromate back in 2023, with enforcement scheduled to begin in 2027.

New York lawmakers have also approved a ban, although it still awaits the governor's signature. Meanwhile, the FDA has included the substance in a broader review of food additives whose safety may deserve another look.

Should you panic about your sandwich?

Probably not. For starters, not every loaf of bread contains potassium bromate. Many major brands have already reformulated their recipes or advertise that they're bromate-free. But if you're curious, the ingredient list is your best friend. Potassium bromate must be listed if it's present.

Source: Food Dive