California's rule to add folic acid brings a Hispanic staple into the regulatory fold

In January, California became the first U.S. state to require food makers to add folic acid to products like tortillas because of the high rate of neural tube defects in Hispanic infants. AYESHA RASCOE, HOST: California is the first state to require folic acid in corn masa flour. That's the key ingredient in foods like tortillas. Experts say that could help prevent serious birth defects, which occur at higher rates among Hispanic families. KQED's Lesley McClurg reports. …