Selenium is important for thyroid function, a healthy immune system, and protecting cells from damage. It helps in fighting off infections and supports thyroid health. Selenium is in Brazil nuts, fish, poultry, and whole grains. A good balance of selenium is key for preventing cell damage and boosting immunity. Not getting enough can affect thyroid function and immune response. ...


Who would benefit from testing their selenium levels?

Individuals with gastrointestinal conditions like Crohn’s disease, residents of areas with selenium-deficient soils, people following restrictive diets such as veganism, those with thyroid disorders, and patients undergoing long-term dialysis could benefit from testing their selenium levels.

What are symptoms of low and high selenium?

Symptoms of Low Selenium:

  • Muscle weakness or pain
  • Fatigue and lethargy
  • Hair loss or discoloration
  • Weakened immune system
  • Fertility issues
  • Cognitive decline
  • Hypothyroidism symptoms

Symptoms of High Selenium:

  • Garlic breath odor
  • Metallic taste in the mouth
  • Hair loss
  • Brittle nails or nail discoloration
  • Nausea and vomiting
  • Skin rashes
  • Nervous system problems like irritability or tremors
  • Extreme cases can lead to kidney, heart, or liver damage

What foods are high in selenium?

Foods high in selenium include Brazil nuts, which are one of the richest sources, along with other nuts and seeds. Seafood such as fish, shrimp, and sardines, and meats like turkey, chicken, and beef, also provide good amounts of selenium. Whole grains, brown rice, and eggs are additional sources. For those on plant-based diets, mushrooms and sunflower seeds are also beneficial.

What are the benefits of selenium supplementation?

Selenium supplementation can boost immune function and offer antioxidant protection, reducing cellular damage from free radicals. It’s beneficial for thyroid health, aiding in hormone production and regulation. Selenium also plays a role in preventing certain cancers and heart disease. For individuals with low selenium intake, especially in regions with selenium-deficient soils, supplements can help meet dietary needs. However, it’s important to manage dosage carefully, as excessive selenium can have adverse effects.

Test(s) that measure/test for Selenium

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