A New Front in the Nutrition Wars

Legislators in California, New York, and Illinois have introduced bills that would impose taxes on ultra-processed foods, marking the most ambitious attempt yet to use fiscal policy to reshape American eating habits. The proposals, introduced within days of each other in late March 2026, have ignited passionate debate among public health advocates, food industry lobbyists, and consumer groups.

The bills vary in their specifics but share a common framework: imposing a per-unit or percentage-based tax on foods classified as ultra-processed under the NOVA food classification system, a framework developed by researchers at the University of Sao Paulo that categorizes foods based on their degree of industrial processing.

What Would Be Taxed

Under the NOVA system, ultra-processed foods are defined as industrial formulations made mostly or entirely from substances derived from foods and additives, with little or no intact food. Examples include:

The California bill (SB 1247) proposes a 2-cent-per-ounce tax on ultra-processed foods and beverages, with revenues directed to a public health nutrition fund. The New York proposal takes a different approach, adding a 10% surcharge at the point of sale. Illinois' version would apply a 5% wholesale tax to manufacturers and distributors.

The Public Health Case

Proponents point to a growing body of research linking ultra-processed food consumption to obesity, type 2 diabetes, cardiovascular disease, and certain cancers. A meta-analysis published in the British Medical Journal in February 2026 found that high consumption of ultra-processed foods was associated with a 29% increased risk of all-cause mortality.

"Ultra-processed foods now account for 58% of calories consumed by American adults," said Dr. Carlos Monteiro, the University of Sao Paulo nutrition researcher who developed the NOVA system. "No single dietary change would have a greater impact on public health than reducing this number."

Revenue projections are substantial. California's Legislative Analyst's Office estimates SB 1247 would generate approximately $3.2 billion annually, which could fund school nutrition programs, subsidies for fresh food access in food deserts, and public health education campaigns.

Industry Opposition

The food and beverage industry has mounted fierce opposition, arguing that the taxes are regressive, would disproportionately burden low-income families, and rest on what they characterize as imprecise science.

"The NOVA classification system was not designed for regulatory purposes," said Katie Bernstein, a spokesperson for the Consumer Brands Association. "It arbitrarily demonizes entire categories of affordable, safe, and nutritious foods. Whole wheat bread with preservatives to prevent spoilage should not be in the same category as candy bars."

The National Association of Convenience Stores has also weighed in, warning that the taxes could drive consumers to cross state lines for purchases, undermining both the health and revenue goals.

Political Outlook

Political analysts give the California bill the best chance of passage, given the state's history of progressive health policy. New York's proposal faces a more divided legislature, while the Illinois bill is considered a long shot in its current form.

Mexico and several European countries have already implemented versions of ultra-processed food taxes with mixed but generally positive public health results. Mexico's sugar-sweetened beverage tax, enacted in 2014, has been associated with a sustained 7.6% reduction in sugary drink purchases.

"The question is not whether these taxes work," said Dr. Monteiro. "The question is whether lawmakers have the political courage to stand up to an industry that profits from making people sick."