The FDA Sent Its Ultra-Processed Food Definition to the White House as a White Paper. Food Manufacturers Just Lost the Preemption They Were Counting On

Fifty-five percent of every calorie eaten in the United States comes from ultra-processed food. Among children aged six to eleven it is 64.8%. Until this month, no federal agency had a written definition of what that phrase actually means.

On 3 August the Food and Drug Administration sent one to the White House. It now sits with the Office of Information and Regulatory Affairs under the title "White Paper: Proposed Definition of Ultra Processed Food". It is logged as a notice. It is marked not economically significant. It is not a proposed rule, and that single choice changes everything the definition can do.

A document with no legal force is also a document with nothing to sue

A proposed rule follows a set path. It goes in the Federal Register. It names the legal authority behind it. It takes public comment. Years later it becomes enforceable. Along the way industry can comment, litigate and shape it. And once it lands, federal law generally sits above state law.

A white paper does none of that. There is no comment period to file into. There is no final rule to challenge in court. There is no preemption. The industry spent two years asking for one federal standard, and got a definition that overrides nothing.

That matters because the fight so far has been fought on legal ground. Food trade groups went to court in December 2025 over the Texas warning label law. The FRESH Act was introduced in April 2026, with backing from large manufacturers. It was written to override state ingredient rules. Both moves assume the argument gets settled by law. A white paper moves the argument somewhere else.

The state patchwork just became the operating reality

California already has a legal definition. Assembly Bill 1264 took effect on 1 January 2026. The test has two parts. A food is ultra-processed if it holds a listed additive, such as a dye, an emulsifier or an artificial sweetener. It also has to be high in saturated fat, added sugar or sodium.

The California timetable is long and specific. Experts had to name the most harmful products by 1 July 2026. Vendors selling into California schools file an annual report from 1 February 2027. Schools start removing the worst products on 1 January 2028. The state health department must define "ultra-processed foods of concern" by 1 June 2029. Vendors are barred from offering them by 1 July 2032, and schools by 1 July 2035. California is the working national standard already, because almost nobody bakes a separate biscuit for one state.

Texas took a different route. Its warning label law names 44 additives and sets the exact wording that has to appear on pack. In 2025 alone, 35 states introduced 93 bills on food additives, part of more than 140 bills across 38 states. A federal definition that preempts nothing adds one more standard to a pile that already runs past fifty.

The pressure will not arrive as a statute

Look at what happened with synthetic dyes. There was no ban. There was an understanding between the health secretary and manufacturers, and the reformulation started anyway. A definition works the same way, only faster and at almost no cost to the regulator.

Once a federal reference point exists, it gets picked up by people who do not need a statute. School districts write it into tenders. Retailers write it into own-brand specifications. Plaintiff lawyers put it in front of juries. State legislators copy the wording. Investors ask what share of revenue sits inside it. A voluntary standard is cheap for the government and expensive for the manufacturer.

Front-of-pack labels are the slower half

Health secretary Robert F Kennedy Jr wants a traffic light label. He has also said he wants a mark for ultra-processed products, once a shared definition exists. The proposal already on the table is a plain black and white box. It shows low, medium or high for a handful of nutrients.

Those are two different systems. Amaru Sanchez, an attorney at Akin Gump, has set out the problem. Adding a colour scheme and an ultra-processed claim to the current proposal would fail the "logical outgrowth" test under the Administrative Procedure Act. The FDA would have to start a fresh round of rulemaking. The label is years out. The definition is weeks out.

What operators should plan against

One number is worth holding on to. The share of adult calories from ultra-processed food is falling. It was 55.8% in 2013 to 2014. It is 53.0% in the most recent survey. The category has been shrinking as a share of the American diet since well before any of this started. Reformulation, protein claims and the move to fresh were already doing the work.

So the planning error is to wait for a compliance date. There may never be one. The definition itself is the event. From the day it publishes, every buyer, retailer, lawyer and legislator has one shared way to sort a shelf. The sorting starts at once. Manufacturers who can already say which of their products fall inside the California test know their exposure today. Everyone else finds out when a retail buyer tells them.