What is a significant dietary source of vitamin C?

Citrus fruits are widely recognized as a significant dietary source of vitamin C due to their high concentration of this essential nutrient. Vitamin C, or ascorbic acid, plays a crucial role in the body, including functions such as the maintenance of healthy skin, blood vessels, bones, and cartilage, as well as aiding in the healing process.

Citrus fruits like oranges, lemons, limes, and grapefruits are particularly noted for containing high levels of vitamin C, making them an easy and tasty way to meet the daily recommended intake. In addition to citrus fruits, other fruits such as strawberries, kiwi, and guavas also provide substantial amounts of vitamin C, but the association between citrus fruits and vitamin C is historically significant and well-established in nutritional science.

While leafy greens do contain some vitamin C, their levels are generally lower than those found in citrus fruits. Nuts and whole grains are not significant sources of vitamin C; they typically provide other nutrients such as healthy fats, protein, and fiber but lack the high vitamin C content that citrus fruits offer.