Selenium: an essential trace element for health and well-being

Selenium is a vital trace element that plays a crucial role in numerous processes in the human body. It contributes to supporting the immune system, cell protection and thyroid function. Although the requirement is low, a selenium deficiency has a considerable impact on health. But what benefits does selenium offer exactly, and how can an adequate supply be ensured? Below you will find all the important information about selenium and its importance for our body.

What is selenium?

Selenium is a chemical element with the symbol Se and belongs to the trace elements that the human body needs only in small amounts. It occurs naturally in soil, water and food. Although the body cannot produce selenium itself, it is indispensable for a wide range of biological functions. Its antioxidant properties in particular make it a central part of our diet.

The most important functions of selenium in the body

Selenium is involved in many vital processes. Here are the main functions at a glance:

• Protection against oxidative stress: Selenium is a component of various enzymes, including glutathione peroxidase. These enzymes protect cells from free radicals and help prevent cell damage.
• Support for the thyroid gland: Selenium plays a central role in regulating thyroid hormones. It supports the conversion of thyroxine (T4) into the active form triiodothyronine (T3).
• Strengthening the immune system: Selenium contributes to immune system function by supporting the formation of white blood cells and having anti-inflammatory effects.
• Support for fertility: Selenium is particularly important for men, as it can improve sperm quality.

Benefits of adequate selenium intake

A balanced intake of selenium is essential to optimally support the functions mentioned above. The most important health benefits include:

• Protection against diseases such as cancer, cardiovascular conditions and inflammation
• Support for cognitive function and prevention of neurodegenerative diseases
• Better skin health and wound healing
• Improved general vitality and energy

Foods with a high selenium content

To cover the daily requirement for selenium, it is important to include suitable foods in your diet. Particularly selenium-rich foods include:

• Brazil nuts: these are considered the best natural source of selenium.
• Fish and seafood: tuna, salmon and shrimp contain high amounts of selenium.
• Meat and offal: beef and liver in particular are rich in selenium.
• Eggs: eggs also contribute to selenium intake.
• Cereal products: whole grain products and wheat germ are good plant-based sources.

The selenium concentration in plant foods can vary depending on the growing region, as it depends heavily on the selenium content of the soil.

Selenium deficiency: causes and effects

A deficiency in selenium can have serious health consequences. The most common causes of selenium deficiency include a selenium-poor diet, certain diseases such as intestinal disorders or reduced absorption capacity of the body. Symptoms of selenium deficiency include:

• weakness and fatigue
• hair loss and brittle nails
• disorders of thyroid function
• weakening of the immune system

In severe cases, a deficiency can even lead to heart muscle diseases or increased susceptibility to infections.

How much selenium does a person need?

The recommended daily dose of selenium varies depending on age, sex and life circumstances. For adults, the reference value in Switzerland is about 60 to 70 micrograms per day. Pregnant and breastfeeding women have a slightly increased requirement. It is important not to exceed the recommended amount, as an overdose can also be harmful to health.

Selenium supplements: when are they useful?

In some cases, taking selenium supplements can be useful, especially if selenium needs cannot be covered through diet. This may be the case in special life circumstances such as pregnancy, a weakened immune system or certain diseases. Before taking dietary supplements, however, a doctor or nutritionist should always be consulted in order to avoid overdose.

Tips for optimal selenium supply

To prevent selenium deficiency on the one hand and overdose on the other, you should observe the following tips:

• Regularly include selenium-rich foods in your diet.
• Avoid a one-sided diet that can impair your nutrient balance.
• If you are unsure or have complaints, consult an expert to determine your individual needs.

Conclusion: the importance of selenium for health

Selenium is an indispensable trace element that offers numerous health benefits. It protects cells, supports the thyroid gland, strengthens the immune system and contributes to fertility. A balanced diet with selenium-rich foods is the best way to cover daily needs. In special cases, dietary supplements can be a useful addition. Make sure to keep your selenium balance in equilibrium in order to benefit from the positive effects of this essential trace element.