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Selenium – a chemical element discovered in 1817 by a Swedish scientist Berzelius. Because it occurs in negligible amounts in nature, it didn’t enjoy any particular interest in the world of science; however, it is quite well tested today. Selenium can be found in seeds and nuts, particularly Brazilian – its richest source, as well as in salmon, tuna, legumes, liver, beef, and turkey meat.
Role of selenium in the body
For a long time selenium had bad repute, as it was believed to have only toxic properties. Along with scientific progress it was discovered, however, that the element in appropriate amounts performs many important functions in the human body. As it turns out, selenium is a component of some extremely important enzymes, for example glutathione peroxidase.
Assimilability of selenium and its deficiencies
There are many factors that can distort the assimilability of selenium, which can potentially translate into deficiencies. For example, it drops drastically in the presence of vitamin C, which is a very common component of our diet.
The assimilability of selenium is also affected by carbohydrates, particularly simple sugars. This allows a conclusion that people with a sweet tooth can have a rather big problem with assimilating the mineral.
Glutathione peroxidase and reduction of peroxides
Selenium is one of the components of glutathione peroxidase (oxidised glutathione) – an enzyme that to a great extent protects our tissues from the harmful activity of organic and non-organic peroxides, particularly hydrogen peroxide. Thanks to that it can protect our cell membranes and red blood cells from their destructive activity.
Functioning of the thyroid
Selenium is an element that enjoys particular popularity among people who suffer from hypothyroidism and Hashimoto’s disease, that is the autoimmune inflammation of the gland. The element is usually used to reduce the number of antibodies that attack the tissue of the thyroid gland and to increase the level of free hormones T3 and T4.
It is worth mentioning that selenium is one of the components of deiodinases, that is the enzymes that transform the inactive form of T4 into the active hormone T3. It is then possible to benefit from the many blessings of the hormone, including faster metabolism and slimmer body.
The above-mentioned glutathione peroxidase is also an important enzyme for the thyroid gland. It has the ability to reduce hydrogen peroxide produced during the oxidation of iodine to its active form. The excess of the factor is responsible for oxidative damage of the thyroid.
Healthy hair and nails
Selenium deficiencies are connected with a significant deterioration of skin derivatives, which might be quite worrying for women. Nails can become brittle or even fall off, and hair usually starts falling much quicker than before. That is why the right supply of the element is worth taking care of to maintain beautiful hair and nails for as long as possible.
Symptoms of selenium deficiency
Problems with the thyroid should definitely be mentioned when it comes to the symptoms of selenium deficiency, as it plays an important role in maintaining the normal functioning of the gland. The deficiency of the component is also connected with the increased frequency of some types of cancer.
A disease typical of selenium deficiency is cardiomyopathy – Keshan disease, which occurs mainly in China, as the Chinese cuisine is particularly poor in the element.
Selenium deficiencies have been observed in people who suffered from some specific diseases. Among them are: depressive disorders, circulatory system diseases, AIDS, malabsorption, pancreatitis.
One of the main properties of selenium is the ability to stimulate the immune system. Supplementing selenium deficiencies allows an increase in the production of lymphocytes and macrophages, thanks to which the organism’s defence line is strengthened and the risk of an infection reduced.
There are also long-term benefits of supplementing selenium. Scientists have observed that the risk of carcinogenesis is increased in the areas of low selenium levels in food. Limiting the process of cancer development includes selenoproteins, for example the above-mentioned glutathione peroxidase and selenoprotein P. Cancer is a horrible experience, so proper prevention is worth taking care of while the organism is still healthy.
Scitec Selenium is recommended particularly for people with a diagnosed selenium deficiency. It can also be helpful in the case of thyroid diseases, for supporting immunity, or as a way to reduce the risk of developing cancer.
Preventively and in case of slight deficiencies, one capsule is sufficient. For therapeutic purposes, e.g. thyroid diseases, you may take 200-400 mcg a day for a short time, up to a month. Total supplementation time should not be longer than 3 months.
Supplements of Scitec Nutrition are designed for people practicing power sports. The offer includes products like high-quality creatine, glutamine, protein supplements, fat burners, weight gainers and BCAA. There are also protein bars and sports drinks in various flavors. These products helps to increase the energy and allow you to achieve better results during training.
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Thickeners (Calcium Hydrogen Phosphate, Microcrystalline Cellulose), Selenium-enriched Yeasts, Anti-caking Agent (Magnesium Stearate)
Selenium (element, chemical symbol Se, atomic no. 34, from chalcogenide, it is present in several allotropic forms). It is supplied the body with food in the form of seleno-amino acids (selenomethionine - gathering supplies, and selenocysteine – a component of glutathione peroxidase, deiodinase and seleno-proteins). Regulates the functioning of the thyroid gland. It affects the growth and development, including sexual development (by increasing production and sperm motility). It affects the flexibility of the tissue, removes some of the toxins from the body and destroys cancer cells and reduces the severity of menopause in women. Natural products containing selenium are seafood (sea fish, oysters, bladderwrack) and vegetable products (broccoli, onions, wheat germ, bran, tomatoes) and animal products (poultry, eggs). It is also included in the composition of vitamin-mineral and mineral supplements. Selenium supplementation is recommended as a dietary supplement of active people having diet poor in this element, and as a factor increasing the body's immunity.
Selenium deficiency increases the risk of developing cancer and heart disease. Symptoms of selenium deficiency are: cardiomyopathy, growth stoppage, disorders of detoxification processes which may lead to damage to the kidneys and liver.
An excess of selenium can lead to selenosis (the disease, the symptoms are: loss of hair, nail cracks, lesions).
daily demand of selenium for pregnant women 65 mcg; nursing mothers 75 mcg; men 7 mcg.
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