Selenium is another mineral that is needed in very small quantities but has great value to our health. It is important in several processes related to reproduction, thyroid hormone metabolism, etc. Selenium is generally stored in our tissues and is then mixed with our body proteins.

Selenium is found in seafood like tuna, halibut, sardines, and shrimp. It is also found in Brazil nuts, ham, macaroni, beef, turkey, chicken, eggs, bread, beans, oatmeal, cheese, milk, yogurt, carrots, potatoes, bananas, peaches, green peas, lettuce and cashew nuts.

The recommended intake of Selenium for adults is 55 mcg per day. It varies with age for kids from 15 mcg to around 40 mcg. The intake value will also be different for pregnant women.

Deficiency of selenium can lead to a heart disease called Keshan disease. This was common in China before the seventies. Low selenium often leads to osteo arthritis.