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Selenium
Selenium is an essential mineral that supports thyroid function, a healthy immune system, and protects cells from oxidative damage. It plays a key role in combating infections and maintaining overall immune health. Selenium is found in foods such as Brazil nuts, fish, poultry, and whole grains. Maintaining adequate selenium levels is important for preventing cell damage and supporting immune defence, while deficiency can impair thyroid function and weaken immune response.
Description
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.
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
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.
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.
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