This study analyzes the potential economic benefits of identifying and treating patients with so-called prediabetes and prehypertension through the Mexican prevention program known by its Spanish acronym PREVENIMSS. The results show that for each US dollar invested in prevention, $84-$323 would be saved over a twenty-year period. For this and other reasons, providing preventive care for prediabetes and prehypertension patients is better than the current routine care model, in which care is provided in most cases when the disease has progressed substantially. Yet data show that screening and preventive care services are still not being used widely enough in Mexico, are provided too late, or are not sufficiently targeted to the most at-risk individuals. Investing in preventive care for patients with prediabetes and prehypertension is cost saving.