About Selenium
Selenium is a trace mineral that the body needs in small amounts to stay healthy.
It plays a key role in antioxidant defense and supports thyroid health.
Why Is Selenium Important?
Selenium helps protect cells from oxidative stress, supports the immune system, and is essential for proper thyroid hormone function.
Benefits of Selenium
- Acts as an antioxidant
- Supports immune system
- Supports thyroid function
- Helps protect cells from damage
- Supports overall health
Foods Rich in Selenium
- Brazil nuts
- Tuna
- Eggs
- Chicken
- Sunflower seeds
- Whole grains
- Dairy products
Top 3 Foods Highest in Selenium
- Brazil Nuts – extremely high in selenium
- Tuna – rich in selenium and protein
- Eggs – easy everyday source
Selenium Daily Intake
| Group | Recommended Daily Intake |
| Adults | 55 mcg |
| Children | 20–40 mcg |
Selenium Deficiency Symptoms
- Weak immune system
- Fatigue
- Hair loss
- Thyroid problems
Selenium Overdose Risks
- Nausea
- Hair loss
- Brittle nails
- Nerve damage (very high intake)
Selenium Supplements
Selenium supplements may help people with low intake or specific health needs.
Too much selenium can be harmful, so supplements should be used carefully.
Related Vitamins and Minerals
FAQ
What happens if I don’t get enough selenium?
Low selenium may weaken immunity, affect thyroid function, and cause fatigue.
Can I get selenium from food only?
Yes, foods like Brazil nuts, fish, eggs, and grains provide enough for most people.
Is selenium important for the thyroid?
Yes, selenium helps support proper thyroid hormone function.