Ascorbic acid - Definition

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Ascorbic acid or vitamin C is mainly found in fruits (citrus) and fresh vegetables, and is therefore supplied through food. Cooking food lowers their value of vitamin C. Among other things, ascorbic acid helps fight against viruses by reinforcing the action of white blood cells and also helps metabolize iron. A lack of vitamin C can cause headaches, fatigue, loss of weight, increased sensibility to infection and, in severe cases, scurvy, a sickness responsible for the aggravation of these signs and for hemorrhaging.