Citrus fruits are well-known for being rich in vitamin C, an essential nutrient that supports various bodily functions. Vitamin C acts as an antioxidant, helping to protect the body from oxidative stress and inflammation. Additionally, it plays a crucial role in collagen synthesis, which is vital for skin health, wound healing, and maintaining the integrity of blood vessels. Consuming citrus fruits like oranges, lemons, and grapefruits can therefore contribute to a well-balanced diet and enhance overall health, particularly in boosting the immune system.