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B1 vitamin (thiamin)
B1 vitamin, or thiamin, is a water-soluble vitamin which represents colourless substance of crystal structure.
B1 vitamin plays an important role in a metabolism of fats and carbohydrates. This substance is extremely necessary for normal course of developments and growth, for maintenance of health of digestive and nervous systems, appropriate cardiac performance. Being water-soluble substance, thiamin does not collect in an organism, and also does not possess toxic properties.
In the nature this vitamin is synthesized by a set of microorganisms and plants, however the person cannot make it and therefore the only source of B1 vitamin is the food.
Constant shortage of thiamin leads to heavy frustration among which a specific place is held by diseases of a nervous system. Usually deficit of vitamin is connected with unbalanced food. First, the insufficient use of the products rich with B1 vitamin can serve as the reason. Secondly, deficit can develop because of excess consumption of antitiaminovy factors. For example, seafood and fresh fish to contain a large amount of substance of a thiaminase which destroys B1 besides coffee and tea weaken its absorption.
Hyper avitaminosis for this substance is not characteristic. However the superhigh dose of injection administration of drug can lead to an acute anaphylaxis as a result of degranulation of mast cells. Besides, overdose can cause various allergic reactions.
The vegetable food is the main source of B1 vitamin. With thiamin products as spinach, peas, haricot, soy, products from coarse flour are rich so. Little smaller concentration of vitamin B cabbage, carrots, potatoes, yeast. From animal products it is possible to allocate beef, pork, a brain, kidneys, a liver, milk.
Depending on a kalorazh of a diet and amount of carbohydrates in it, the adult of the person needs not less than 2 mg of B1 vitamin a day. The raised doses of this substance can it is required during recovery and during diseases, at strong exercise stresses, to elderly people and children, people with hyperfunction of a thyroid gland.
Some medicines are capable to reduce the level of this hormone in an organism because of contents in sulfurs, among such drugs there are oral contraceptives, antibiotics and other drugs. Enough magnesium in an organism is necessary for full digestion of B1 vitamin.
Symptoms of deficit of thiamin:
- Fast fatigue
- Chill at a normal temperature
- Loss of appetite
- Deterioration in coordination
- Gastrointestinal frustration
- Take an illness - brie which is characterized by serious defeat of TsNS, an atrophy of muscles, paralysis, heart failure.