California was the first state in the country to change the composition of most corn tortillas sold in its stores. Months after the obligation to add folic acid came into effect, the measure began to set the course in the United States: Alabama has already adopted a similar standard, other states are studying following the same path and some of the main manufacturers extended the modification to their products marketed throughout the country.

What began on January 1, 2026 as a California public health policy thus ceased to be an exclusively state change. The decision is changing the tortilla industry and could make corn dough fortification a new national standard.

What changes with the new law?

The measure, promoted as a public health strategy, made California the first state in the country to require the fortification of corn masa flour and most products made with it, such as tortillas.

The goal is to reduce the incidence of serious birth defects in babies, especially those that affect the brain and spinal cord.

The rule, known as AB 1830, requires that corn masa flour marketed in California contain a specific amount of folic acid, a B complex vitamin (B9) essential during the first weeks of pregnancy. In addition, packaging must clearly indicate its presence on the nutritional label.

The obligation covers most manufacturers and distributors of products made with corn dough.

Why is folic acid added?

Folic acid helps prevent neural tube defects, such as spina bifida and anencephaly, disorders that develop very early during pregnancy, often before a woman knows she is pregnant.

Since 1998, the United States has required fortifying products made with enriched wheat flour, such as breads, cereals, and pastas, with folic acid. However, corn flour had been left out of that requirement, despite being a staple food for millions of Latino families.

Various studies showed that this difference could contribute to higher rates of congenital defects in communities where corn dough is a regular part of the diet.

Will the flavor or texture change?

No. Health authorities and manufacturers maintain that the incorporation of folic acid does not modify the flavor, color, aroma or texture of tortillas or other products made with corn dough. The change occurs at a nutritional level and is imperceptible to consumers.

Will all tortillas have to meet the standard?

There are some exceptions. The law exempts certain small producers, artisanal food operations and some establishments that make their own dough in limited quantities. Certain snack-type products are also excluded.

On the other hand, most large brands and manufacturers that supply supermarkets in California must comply with the new regulations.

California leads the way for other states

The initiative is already being observed by other states. Alabama passed similar legislation, and places like Florida, Georgia, Oklahoma and Oregon are also considering projects to add folic acid to corn masa products.

For health authorities, the measure represents a simple and low-cost way to improve the population's nutrition and reduce preventable diseases without changing the eating habits of millions of people.

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