You might not be familiar with selenium but it does a lot to keep you healthy. It is considered a trace mineral and it works well when paired with Vitamin E. It helps in preventing damage to the cells. It is also essential in making sure iodine regulates y our metabolism better and allows Vitamin C to improve the overall protection of your cells. This is why it is important to take foods high in selenium if you want to take advantage of these benefits.
Tuna contains enough selenium to keep you healthy. However, it is not advised to eat several times a week due to possible mercury content. As long as you are getting enough servings, it is perfectly fine. It is also low in calories and rich in Omega 3. With 42.6 mcg of selenium per 100 grams, it should be included in your diet.