thyroid gland - is one of the key links in the body's endocrine system, which regulates metabolism.Synthesized by her hormones are involved in numerous vital processes.
So if a well-being was something unintelligible, recommendation №1 - «check the thyroid."
main product of so-called A-gland cells - thyroid hormones: triiodothyronine (T3) and tetraiodothyronine (thyroxine, T4) .Thyroxine - a low-level form of triiodothyronine.
Thyroid makes it a lot, but most of T4 is about "safety" in case of need to quickly go into biologically active T3 form.
C-cells produce thyroid hormone calcitonin.It stimulates the osteoblast cells that form bone, and inhibits the activity of osteoclasts that destroy it.
Normally, the more a person eats, the more forms of t
If the body is starving, thyroid gland produces less thyroid hormone, and the body begins to live "slowly" to not waste precious energy.
Thyroid hormones are involved in regulating the production of growth hormone in the pituitary gland.Its deficiency leads to growth arrest.Lack
hormone calcitonin causes of violations of absorption of calcium - the basic building material for bone tissue.
Calcium is also needed for muscle function and conduction of nerve impulses.For example, with an increase in blood levels of thyroid hormones all tendon reflexes are increased.A tremor (shaking hands) develops in overproduction.
Suffice it to say that the introduction of only 1 mg of thyroxin daily energy expenditure increases to 1000 kcal.
This happens because thyroxine enhances glucose uptake, resulting in starts actively spent glycogen in the liver.A glycogen consumption - is a powerful release of energy.
Thyroid hormones enhance the process of splitting fat (lipolysis).As a result, the body also receives a large number of molecules of ATP (adenosine triphosphate) - the main source of energy for any living organism.And yet at the same time slows down the process of fat deposits.
Thyroid hormones have the ability to enhance the processes of formation of erythrocytes (red blood cells) in the bone marrow.
Thyroid hormones are involved in the work of the heart muscle (myocardium), regulating the transport of amino acids, glucose and calcium and protecting the heart from stress.
Thyroid hormones increase the sensitivity of tissues to catecholamines - Substances that are forced to work the nervous system, they are called "control" molecules.The most famous catecholamine - adrenaline.
thyroxine accelerates adrenaline consumption by the body.It largely determines the overall condition of the person.According to doctors, 10-15% of the cause of depression is the deficit of thyroid hormones.
Thus, in addition to purely physiological problems may develop depression, a general lack of energy, a person loses interest in what happens.
With increased activity of the thyroid gland function increases the level of estrogen in the body.At low - progesterone.
Any serious imbalance of estrogen and progesterone can cause the development of endometriosis, fibroids, mastitis.
hypo- and hyperthyroidism during pregnancy is fraught with anemia, preeclampsia, premature detachment of the placenta.When violations of the thyroid gland gets off the menstrual cycle, until the development of anovulation and infertility.
thyroid dysfunction may cause prolonged posledrodovoy depression that developed during pregnancy.
This is another reason to consider that during pregnancy iodine consumption increases - because the fetus during the I trimester formed its own thyroid gland, which also uses iodine to produce its own thyroid hormones.As a result, my mother in this period begins to experience severe iodine deficiency, which leads to hypothyroidism.
Acute deficiency of thyroid hormones leads to myxedema - severe hypothyroidism.Due to the violation of all energy metabolism processes in the body slow down: if a person falls into a chronic sleep - both physiological and intellectual.
body temperature falls (people always freeze), decreases blood pressure and heart rate (bradycardia), may start losing his hair, even against the background of reduced appetite worse work the gastrointestinal tract.Due to the disruption of the metabolism of proteins forming heavy swelling throughout the body.
Excessive production of thyroid hormones is quite different.The metabolism is accelerated.Good appetite and increased nutrition do not save on weight loss.
Increased sweating, heat intolerance may develop.Increased heart rate (tachycardia), heart failure symptoms appear.One becomes overly emotional, restless.His hands shaking, he could not concentrate.In women, the menstrual cycle is disrupted, and potency in men falls and possibly breast enlargement (gynaecomastia).
In both cases, the characteristic feature of thyroid dysfunction - goiter.thyroid tissue overgrowth occurs when the thyroid hormone deficiency, and their overproduction.
In the first case there is goiter due to lack of iodine, necessary for the production of hormones.Then the body is desperately increases thyroid tissue in the hope that he can so absorb more iodine and synthesize the missing amount of hormones.In the second crop is growing under the influence of thyroid hormones themselves, forcing the thyroid tissue to live an active life too.
Severe hypothyroidism during pregnancy leads to underdevelopment of the fetal brain and cretinism in children.
thyrotoxicosis (hyperthyroidism) in the expectant mother is no less dangerous for the health of the baby: it is fraught with malformations, low birth weight infants.Since thyroid hormones in early pregnancy corpus luteum control work, in violation of their production possible spontaneous miscarriage.
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