Selenium

Selenium is a mineral that is naturally present in soil and water, and therefore in the food chain. It is an essential trace element for humans, meaning the body needs it in small amounts for normal functioning. It is often found in foods like Brazil nuts, fish, meat, and eggs.

Selenium is primarily added to foods as a nutrient supplement, to fortify products and ensure consumers can meet their dietary requirements. It is commonly found in vitamin and mineral supplements, and sometimes added to specific food items like protein shakes and milkshakes to boost their nutritional profile.

Selenium is an authorised nutrient in the UK and is permitted for use in food supplements. The Food Standards Agency (FSA) and Food Standards Scotland (FSS) oversee its regulation. Selenium is important for thyroid function and the immune system, and acts as an antioxidant. However, excessive intake can lead to adverse health effects, a condition known as selenosis.