Final answer:
Vitamins A, vitamin C, calcium, and iron are required to be listed on nutritional labels to help consumers understand how much a serving of food contributes to their daily nutrient intake.
Step-by-step explanation:
Vitamins A, vitamin C, calcium, and iron are required to appear on nutritional labels. In the United States, the Nutrition Facts label is mandated by law to include these micronutrients because they play crucial roles in maintaining health. Vitamin A is essential for vision and immune function, vitamin C is important for skin and connective tissue, calcium is vital for bone health, and iron is crucial for blood production and oxygen transport. Since our bodies need certain amounts of these nutrients each day, these percent daily values help consumers understand how much a serving of food contributes to their overall nutrient intake.
Understanding Percent Daily Values on Labels
When you look at the Nutrition Facts label, nutrients with percent daily values of 5% or less are low in that food, and those with 20% or more are high. For instance, a label might indicate 10% of the daily value for vitamin A, 8% for vitamin C, 20% for calcium, and 45% for iron, showing the significance of these nutrients in your diet.