They are organic materials whose presence in food is bound, even in small quantities, because they are necessary for growth and healthy life, and recent studies indicate that some vitamins are important in terms of their optimal function of the immune system. Their absence or presence in insufficient quantities leads to delays in growth and disturbances in human life that result in symptoms of some diseases and some of them may lead to death.
And that the role of vitamins is delicate in the functional processes of the body, as they act as a chemical mediator during the metabolic processes because they are important in the many chemical processes that occur inside the body, and it is known that vitamins do not produce energy but are necessary for the vitality of the body because they are involved in the synthesis of hormones and enzymes (where it is building Enzymes are essential for cellular metabolism.)
Some vitamins affect protein synthesis, blood formation, bone and cell growth, and endocrine activity, and although they are not a source of energy, they dominate oxidation processes and energy generation by helping direct the reactions that take place inside the body and without being a party to it.
The human body needs very small amounts of vitamins, a simple lack of the level of vitamins will lead to a reduction in the level of functional efficiency, general weakness, hyper-irritability, and a lack of immunity of the body, and vitamins have different interactions within the human body, the existence of one of them is the basis for the functional work of the other, and the body cannot manufacture them, Therefore, its only source is the food that we eat, and studies have shown that the vitamins in foods are more effective than those added vitamins, as vitamins should not be taken except when needed in the event of a deficiency in the body or when performing activities that affect their percentage in order to reduce oxidation pressure Resulting from the physical performance.
Note that large groups that exceed daily requirements do not improve function or performance, and maybe toxic.
In general, vitamins are divided in terms of their solubility into two main categories, namely:
- Fat-soluble vitamins such as vitamins (A, D, E, and k). And because it is fat-soluble, it is stored in the body, and therefore it does not need to be supplied to the body again every day, and the excess amounts accumulated in the body of these vitamins can be toxic.
- Vitamins that dissolve in water, such as the B complex group and vitamin C.
These water-soluble vitamins are not stored in the body, but they are expelled in the urine, and since their presence decreases continuously from the body, they should be supplied again.
Here we emphasize that it is always better to take vitamins in foods than to take them as tablets, and it is not permissible to take large doses of soluble vitamins either in water or in fat.
Studies confirm that the basic materials that facilitate chemical reactions are good nutrition that contains vitamins that are included as a catalyst in the synthesis of enzymes that dominate all physiological processes in the body, especially when energy is released from sugary substances (glucose) and fatty substances that specialize in these processes are vitamin (C). .E).
Sometimes the supply of vitamins is necessary. For individuals and athletes who perform high activity, they need more vitamins when they burn more energy, and this need for an increase should be matched by an increase in the intake of high-calorie foods to meet energy needs and nutrient requirements, noting that the performance of exercise during training units increases the demand in high quantities among athletes Vitamin (CE) as they are considered a defense system as a result of their participation in chemical processes that take place inside the body in order to prevent damage and rupture of cell membranes from free radicals, as well as cell membranes and tissues from injuries and diseases that appear on athletes during periods of continuous training, and as certain types of vitamins raise the response Immunity and maintaining a healthy immune system, it must include a balanced diet on its supply, which may help reduce the risk of exposure to the disease that usually accompanies exhaustion and overtraining, as well as antioxidant vitamins can reduce the possibility of muscle damage during violent activity.