Selenium is vital for the thyroid gland and immune system. A deficiency can cause tiredness, hair loss, recurring sickness, muscle weakness, and brain fog. Eating selenium-rich foods such as Brazil nuts, yellowfin tuna, and beef steak can help. Supplements containing selenomethionine are recommended, but avoid pairing selenium with vitamin E to reduce cancer risks. Selenium is vital for the thyroid gland and immune system. A deficiency can cause tiredness, hair loss, recurring sickness, muscle weakness, and brain fog. Eating selenium-rich foods such as Brazil nuts, yellowfin tuna, and beef steak can help. Supplements containing selenomethionine are recommended, but avoid pairing selenium with vitamin E to reduce cancer risks. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle