Look for your country's currency

Supplement & Natural Health Care Articles | Dr. Clark Store

What is Selenium?

Posted by

What is Selenium?

Selenium is a trace element that is naturally present in many foods. It is only needed in small amounts and is nutritionally essential for humans because it plays a critical role in reproduction, thyroid hormone metabolism, DNA synthesis, and protection from oxidative damage and infection.

There are two forms of Selenium that exist. The first is inorganic (selenate and selenite) and the second is organic (selenomethionine and selenocysteine). Both forms can be good dietary sources of selenium.

Most selenium is in the form of selenomethionine which is found in animal and human tissues. Traces of selenium are also found in body proteins. Skeletal muscle is the major site of selenium storage, which according to the National Institute of Health “[accounts] for approximately 28% to 46% of the total selenium pool”. Selenium can be found in your blood, urine, hair, and nails.

Here’s a list of foods that are rich in Selenium:

  • Brazil nuts*
  • Seafoods*
  • Organ meats*
  • Breads
  • Grains
  • Meat
  • Poultry
  • Fish
  • Eggs

* - The richest sources of selenium.

Table from National Institute of Health Site - Click Here

The amount of selenium in a given type of plant-based food depends on the amount of selenium in the soil. The quality of the soil is very important because the selenium content of soil affects the amounts of selenium in the plants that animals eat, so the quantities of selenium in animal products may also vary. Selenium is available in multivitamin/multimineral supplements and as a stand-alone supplement. At the Dr. Clark Store, we offer selenium supplements in 200 mcg capsules. Selenium functions as an antioxidant, promotes proper thyroid function, and supports general immunity.*

In the table below, we show the recommended dietary allowances for Selenium.

Table from National Institute of Health Site - Click Here

Selenium’s antioxidant properties help to reduce the damage of oxidative stress. Working along with other antioxidants such as vitamin E, vitamin C, and glutathione, selenium helps to fight the damage to cell membranes and DNA caused by free radicals. This type of cellular manipulation has been linked to aging and disease formation. Antioxidants help to neutralize free radicals and put a stop to their damaging effects.*

Selenium is an essential nutrient needed to maintain proper thyroid function. Selenium helps to regulate the production of thyroid hormone T3. The thyroid gland needs to be in tip-top shape, as it plays a vital role in regulating body temperature, metabolic rate, reproduction, growth, and more.*

Selenium also helps to build white blood cells. These are the antibodies which destroy foreign pathogens that can result in the formation of illness and infection.*

The blood thinning properties of selenium help to reduce blood clot formation. Selenium may also reduce levels of LDL cholesterol. Build-up of blood platelets and cholesterol in the veins and arteries are contributing factors to cardiovascular events.* Selenoproteins help prevent the oxidative modification of lipids, reducing inflammation and preventing platelets from aggregating. Experts have suggested that selenium supplements could reduce the risk of cardiovascular disease or deaths associated with cardiovascular disease. Although the studies show great promise, the limited clinical trial evidence to date does not support the use of selenium supplements as a way to prevent heart disease, particularly in healthy people who already obtain sufficient selenium from food. The supplements are meant to be an addition to your normal diet, they are not meant to become the primary source of nutrition.

The Risks of Too Much Selenium

The Selenium concentration is much higher in the thyroid gland than in any other organ in the body. Selenium has important functions in thyroid hormone synthesis and metabolism, similar to iodine. It has been proven that selenium is important, however too much of a good thing can be a bad thing. Chronic high intakes of selenium in either the organic or inorganic form has similar negative effects on the body. Here are a list of symptoms of too much selenium in your system:

  • A garlic odor in the breath and metallic taste in the mouth
  • Hair loss
  • Nail brittleness
  • Lesions of the skin and nervous system
  • Nausea
  • Diarrhea
  • Skin rashes
  • Mottled teeth
  • Fatigue
  • Irritability
  • And nervous system abnormalities.

Selenium toxicity is not only a result from supplements. Brazil nuts for instance, have high amounts of selenium which can cause toxicity if consumed regularly. The table below shows the highest levels of selenium that each person can take.

Foods provide an array of nutrients and other components that have benefits for health, nutritional needs should be met primarily through foods. In many cases, fortified foods and dietary supplements are useful when it is not possible otherwise to meet needs for one or more nutrients.


National Institute of Health - https://ods.od.nih.gov/factsheets/Selenium-HealthProfessional/

Dr. Clark Store - https://drclarkstore.com/selenium-200-mcg-50-capsules/

View Comments

Add Povidone-Iodine to Your Respiratory Infection Prevention Plan

For many decades iodine solutions have been successfully used as trustworthy antiseptic agents, particularly povidone-iodine solutions. They are widely used in hospitals to disinfect the skin before and after surgery. They are sold globally over the counter under a number of brand names as first aid agents to disinfect minor skin wounds.Povidone-iodine is so well regarded for its disinfection properties that [...]

Read More »

5 Ways to Enhance Digestive Health

Nearly every single one of us has experienced digestive problems at some point. If you’re one of the afflicted, then every time you eat is a potential for stomach and intestinal discomfort. While the symptoms and severity may vary from person to person, digestive health has become a widespread concern for the majority of the [...]

Read More »

Exploring the Health Benefits of Colloidal Silver

What does your immune strategy look like these days? Whether your plan to stay healthy is short-lived and ends when we’re done with cold and flu season or immune health is a permanent fixture in your life, make sure your plan is varied. Of course following a healthy diet and getting regular exercise are a [...]

Read More »

5 Ways to Promote an Effective Liver Detox

The brain might rule the roost up top, but if you travel down the body, the liver is king (or queen). The liver is the body’s detox center and performs a number of functions ranging from eliminating toxic elements to maintaining the chemical balance in the body. Among all the essential  functions of the liver, detoxification is the most important and highlighted function. The [...]

Read More »

Strengthen Your Immunity and Fight Off Covid-19 Symptoms with These Vitamins

Approximately 90% of Americans do not consume enough vegetables and fruits but the majority of them are making up for nutritional deficiencies in the body by taking vitamin supplements.The use of supplements has been going on for several decades since they play important roles in improving and maintaining health. According to statistics from the Council for Responsible Nutrition, 75% [...]

Read More »

Essential Vitamins to Strengthen Your Immune System

Most of us have imperfect lifestyles coupled with several stress-inducing factors. In the middle of fighting never-ending and unfortunate moments of our lives, we can hardly manage to maintain a healthy routine. We may overlook the fact that complex problems often have simple solutions, one of which may be committing to building a healthy and resistant body to deal with [...]

Read More »

Most Overlooked Causes of Fatigue

Chronic fatigue is far more different from occasional tiredness. It is a biological illness that limits our daily activities and results in physical exertion, mental exhaustion, and immune dysfunction. Anyone who has this condition would agree that going through fatigue is devastating because this debilitating state leaves a person exhausted. Fatigue is more than just feeling tired, and it cannot be remedied [...]

Read More »

Top Essential Vitamins Your Multivitamin Should Have

Do you know our bodies need proper nutrition to function effectively? Good nutrition that consists of all essential vitamins and minerals has a direct impact on the quality of life. Foods rich in vitamins and minerals play a vital role in decreasing our chances of developing multiple diseases. Therefore, sticking to the intake of essential vitamins is extremely important to [...]

Read More »

Immunity Building Secrets That Everyone Should Know By Now

The immune system plays a significant role in protecting against infections. With the winter approaching, flu and other seasonal illnesses become quite prevalent. A well-functioning immune system is your primary defense against a variety of infections and immune system diseases. In this article, we will talk about how to improve your immune system, natural immune boosters, and have a look [...]

Read More »