Mandatory alcohol health warning labels: limited visibility despite high regulatory compliance in Mexico

Abstract Introduction This study evaluated the physical characteristics and visibility of mandatory alcohol health warning labels on commercial beverage containers to assess their communicative effectiveness. Methods A descriptive observational study analyzed a sample of alcoholic beverage containers. Physical attributes—including warning location, font size, pictogram dimensions, and color contrast—were measured using standardized geometric approximations. Results While 97.4% of containers included warnings, only 11.5% placed them on the front label. Visibility was low: pictograms occupied less than 1% of the total label area, and font sizes averaged just 3.6 mm. Furthermore, only 19.2% adhered to officially approved color schemes, with most relying on low-contrast backgrounds. Discussion Although producers technically comply with mandatory regulations, their design choices structurally minimize warning salience. To restore public health impact, regulations must be urgently updated to mandate front-of-package placement, proportional sizing, and standardized high-contrast formats.