Which vitamin is important for collagen synthesis and immune function?

Vitamin C plays a crucial role in collagen synthesis, which is essential for maintaining the structural integrity of skin, blood vessels, tendons, ligaments, and cartilage. It acts as a cofactor for the enzymes involved in the hydroxylation of proline and lysine, amino acids needed for collagen stability. Without adequate vitamin C, the body cannot effectively form or repair connective tissue, leading to issues such as weakened skin and poor wound healing.

Additionally, vitamin C is known for its immune-boosting properties. It supports various cellular functions of both the innate and adaptive immune systems, enhancing the production and function of white blood cells, which are vital for fighting infections.

In contrast, other vitamins listed have different roles; for example, vitamin E is primarily an antioxidant and helps protect cells from oxidative stress but is not directly involved in collagen synthesis. Vitamin K is important for blood clotting and bone health, and vitamin B12 is crucial for nerve function and the formation of red blood cells but does not play a significant role in collagen production or immune function. Therefore, vitamin C is clearly the key vitamin associated with both collagen synthesis and immune health.