Another important factor affecting TAC is the amount of calories in eaten food. Studies have shown that postprandial plasma TAC increase after eating fruits and vegetables is less noticeable if more high-calorie compounds (carbohydrates, mainly in the form of simple sugars, fatty acids, proteins, and alcohol) are in the product. After a meal rich in carbohydrates, plasma TAC decreases,which is a consequence of production of large quantities of ROS (result of carbohydrate metabolism in aerobic conditions) [19]. After consuming a meal containing only nutrients (energy and building blocks) in an amount of about 484 kcal, patients’ level of plasma TAC lowering was an average of 0.99 units of the total antioxidant capacity (unit ¼ trolox equivalent [TE] mmol/L*h1) per kcal of consumed energy. Therefore, in order to prevent loss of redox balance of blood plasma, a diet enriched with plenty of antioxidant-rich fruits and vegetables is recommended daily [19,26].