What is a common nutritional deficiency in fast food?

The correct response highlights a prevalent nutritional deficiency associated with fast food consumption: Vitamins A and C. Fast food typically lacks a variety of fresh fruits and vegetables, which are primary sources of these vitamins. Vitamin A is vital for vision, immune function, and skin health, while Vitamin C plays a crucial role in the immune system, collagen synthesis, and absorption of iron from plant-based sources.

Due to the high-caloric, low-nutrient density often found in fast food, individuals consuming these diets may miss out on essential vitamins, leading to deficiencies that can affect overall health. While the other options may contain elements that can be found lacking in fast food, they do not accurately reflect the most common specific deficiencies observed. For instance, while iron can be an issue in some diets, fast food can still provide high-fat meats that are sources of iron. Similarly, the content of protein and fats may actually be abundant in many fast food items, and fiber and carbohydrates can vary widely based on menu choices.