Selenium

Selenium is a trace mineral present in soil, certain foods, and to a lesser extent, in water. It plays a vital role in human health. When combined with vitamin E, selenium functions as an antioxidant, combating free radicals that can damage DNA and cell membranes. These free radicals contribute to aging and various health issues, including cancer and cardiovascular diseases. Therefore, selenium helps neutralize these harmful agents, protecting the body from potential damage. Research indicates that regular intake of selenium is beneficial for both male and female fertility.

Benefits of Selenium

Selenium serves as an antioxidant, aiding in the reduction of oxidative stress within the body. When paired with other antioxidants like vitamin E, it has shown effectiveness against colon and prostate cancer.
It supports the immune system's proper functioning. Studies have demonstrated that selenium can slow the progression of HIV to AIDS.
Selenium promotes healthy blood circulation and mitigates oxidative stress from free radicals, thereby enhancing heart health and lowering the risk of heart disease.
It is essential for the optimal functioning of the thyroid gland.
Selenium may decrease the likelihood of asthma attacks.
It can also lower the risk of developing rheumatoid arthritis.
Additionally, selenium contributes to a healthy metabolism.

Food Sources

Seafood, particularly shellfish, is the richest source of selenium. Other significant sources include red meat, grains, brown rice, eggs, and garlic. Dairy products such as yogurt, milk, and cottage cheese also provide a notable amount of selenium. Various vegetables, including lentils, lettuce, green peas, potatoes, spinach, and carrots, are also good sources of this mineral.

High Amounts of Selenium

An excess of selenium in the bloodstream can lead to a condition known as selenosis. This condition may cause symptoms such as hair loss, fatigue, nausea, bad breath, irritability, and minor nerve damage. Severe overdose of selenium can result in complications affecting the kidneys, liver, and heart.

Selenium Deficiency

A deficiency in selenium can result in myocardial necrosis, which weakens the heart muscle. Insufficient selenium levels in the body are also associated with Kashin-Beck disease, characterized by degeneration, atrophy, and necrosis of cartilage tissues in the joints. Furthermore, a lack of selenium increases the body's vulnerability to various diseases. Selenium deficiency is linked to hypothyroidism, with symptoms that may include excessive fatigue, goiter, miscarriages, and cognitive impairments.