Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that is essential for the growth and repair of tissues in the body. It is also a powerful antioxidant that helps protect cells from damage caused by free radicals. Research on vitamin C focuses on its role in the immune system, wound healing, collagen production, and its potential benefits in preventing and treating various health conditions such as scurvy, cardiovascular disease, and certain types of cancer. Additionally, studies have explored the effects of vitamin C supplementation on overall health and longevity.