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B6 vitamin (pyridoxine)
B6 vitamin is set of several substances which possess similar biological activity.
B6 vitamin is extremely necessary for an organism as it is responsible for digestion of unsaturated fatty acids, an exchange of proteins and fats. Besides, this vitamin takes part in many chemical changes in an organism. The more fats and proteins the person eats, the more this connection is necessary for him. At deficit of B6 vitamin in an organism some of enzymes can be blocked, and without them course of chemical processes is impossible. B6 vitamin also improves work of a nervous system, a liver, takes part in a hemopoiesis. As well as all other vitamins of this group, B6 vitamin are accepted by a role in a metabolism, participates in synthesis of glyutaminovy acid, a histamine, hemoglobin, enzymes. It reduces cholesterol level, improves contractility of muscles of heart, together with B5 vitamin it turns folic acid into an active form. One more function of B6 vitamin consists in antibody formation, and also synthesis of neuromediators which are necessary for healthy functioning of a nervous system, takes part in development of erythrocytes, processes of digestion of glucose by nervous cells. Besides, B6 vitamin slows down processes of aging thanks to synthesis of nucleic acids, works as a natural diuretic, reduces numbness of extremities, spasms and spasms of muscles, helps to prevent skin frustration.
Discovery of B6 vitamin was spontaneous, as a by-product.
B6 vitamin is water-soluble, it does not collect in an organism and quickly – within eight hours, is removed from it. Therefore completion of this connection is constantly necessary for an organism that has to occur by means of the balanced diet.
Daily requirement of B6 vitamin various each age, for babies requires 0,3-0,7 mg, for children of advanced age – from 1 to 1,7 mg, the adult needs 1,6-2,2 mg, and it will be required to pregnant women and the feeding mothers by from 1,8 to 2,6 mg of this vitamin.
Reception of some drugs, such as cuprimine and Penicillaminum, antitubercular and anticonvulsant drugs can result in strong shortage of this vitamin B an organism. The concomitant use of B6 vitamin with B1 and B12 vitamin because of weakening of their general influence is not recommended. Also this vitamin can lead to reduction of efficiency of drugs for treatment of an illness of Parkinson.
Increase in the accepted dose of vitamin is useful at reception of oral contraceptives, antidepressants, to the smokers, persons using large amounts of alcohol during the raised exercise stresses.
Symptoms of shortage of B6 vitamin in an organism:
- Loss of appetite
- Nausea and vomiting
- Increase of level of uneasiness
- Growth inhibition at children's age
- Seborrheal dermatitis
- Konvulsionny attacks
- Anomalies of an encephalogram
- Emergence of stones in kidneys
- Polyneurites of the lower and upper extremities
- Emergence of stones in kidneys
- Peripheral neuritis
B6 vitamin is well acquired in various forms. Did not lead daily reception of this substance in doses which exceed recommended by 50 times within several years to any side effects.
It is possible to distinguish soy, potatoes, mustard from vegetable sources of B6 vitamin field, corn, a citrus, tomatoes, white and a cauliflower, strawberry, nuts, bananas, avocado, carrots, bean, rice, grain, spinach, yeast, spinach, grains of cereals.
Sources of vitamin of animal origin are eggs, heart, kidneys, a liver of cattle and cod, dairy products and milk, oysters, fish, meat.