4. Causes of selenium deficiency
Selenium deficiency can arise from several causes. One common reason is inadequate dietary intake, especially in regions where the soil contains low selenium levels, resulting in food sources that are poor in this mineral.
Other causes include malabsorption disorders such as Crohn’s disease or celiac disease, which impair nutrient uptake. Certain medical conditions affecting the liver or kidneys may also reduce selenium levels. Additionally, long-term parenteral nutrition without adequate selenium supplementation can lead to deficiency.
5. Symptoms of selenium deficiency
Selenium deficiency can manifest through a variety of symptoms, many related to compromised immune function and skin health. General symptoms include fatigue, muscle weakness, and increased susceptibility to infections.
Regarding the skin, deficiency may cause slower wound healing, increased sensitivity to sunburn, and the development or worsening of age spots due to diminished antioxidant protection. Recognizing these signs early can prompt evaluation and correction to prevent further complications.
6. Dietary selenium sources
Ensuring sufficient selenium intake primarily involves consuming selenium-rich foods. Some of the highest sources include Brazil nuts, which can provide several times the daily requirement in just a few nuts.
Other excellent sources include seafood such as tuna, halibut, and sardines, as well as organ meats like liver. Eggs, sunflower seeds, and whole grains also contribute meaningful selenium amounts. Incorporating a variety of these foods into your diet helps maintain optimal selenium levels.
