Selenium is an essential trace element of fundamental importance to human health.
The most abundant sources of selenium are Brazil nuts, seafood, meat and poultry. People at risk of selenium deficiency include those with a restricted food intake (slimmers, vegetarians, the elderly), pregnant and lactating women, and those living in geographical regions with selenium depleted soils.
It is recognized that soils in many areas of the world, including the UK, are deficient in selenium, often as a result of continual or intensive farming. This deficiency is manifest upwards through the food chain via plants and animals, culminating in man. In Scandinavian countries, selenium is added to agricultural fertilizers to increase depleted soil selenium levels, resulting in an increase in population average selenium intake from 30 to 90 microgm per day.
Dietary selenium always occurs in an organic form (i.e. bound to an amino acid such as methionine or cysteine), whereas selenium in supplements may be organic or inorganic in form. The absorption of organic selenium (selenomethionine, selenocysteine) is generally more efficient than for inorganic selenium (e.g. sodium selenite), and the absorption of organic forms of selenium is not reduced by concurrent intake of vitamin C.
Pharma Nord Bio-Selen is a multiple nutritional supplement designed to meet the daily requirement for the basic antioxidants, which act synergistically with selenium when supplemented in combination. We use our own ingredient, SelenoPrecise. This product has a high and stable content of l-selenomethionine and 30 other organic selenium compounds boasting a guaranteed total absorption of 89%.
Selenium is an essential component of the key antioxidant enzyme glutathione peroxidase, which acts in concert with other types of antioxidants (particularly vitamin E) to protect the body from the effects of damaging free radicals. Selenium helps to maintain a healthy immune system, which is important in resistance to infectious bacteria and viruses, as well as cancer cells. Selenium plays important roles in the control of normal thyroid hormone metabolism, and in maintaining fertility by promoting sperm motility.
Deficiencies of selenium or zinc have been identified as important factors in promoting the growth of Candida species, as a consequence of the adverse effects of such deficiencies on immune function and thyroid/adrenal hormone metabolism.
Oral Health
Selenium helps to protect the body from the toxic effects of heavy metals such as mercury from amalgam fillings. Amalgam fillings release mercury vapour which is absorbed into the bloodstream with potentially harmful effects. Selenium binds to heavy metals rendering them harmless. British diets are very low in minerals and antioxidants, in particular selenium. The basis for our natural defense mechanisms may be too weak and so make mercury poisoning even more dangerous. This is why it is advisable to take measures to deal directly with the problem of amalgam fillings and ensure that our diets contain sufficient selenium and antioxidants.