A multivitamin-mineral can serve as an effective bridge between what Americans should eat and what they actually consume. Repeated studies have shown that Americans do not consume essential nutrients at recommended levels through diet alone. Low-income and older Americans are more likely than others to have insufficient and nutritionally inadequate diets. The best way to get all of the recommended daily nutrients is to eat a healthy, well-balanced diet. But this is not always possible, especially for low-income populations.