Many people are familiar with the mineral selenium but they aren’t really sure what it does for their bodies. Selenium-rich foods are important for protecting our cells from damage caused by free radicals. It also helps to lower the risk of joint inflammation and it enables thyroid hormone production. Research has suggested that selenium can aid in the detoxification of mercury in the body. It’s also been shown to help prevent some cancers. Symptoms of selenium deficiency include weakness or pain in muscles, whitening of the nail beds, and the discoloration of skin and/or hair. Incorporate selenium into your diet by eating crimini mushrooms, Brazil nuts, wild-caught salmon, oats, sunflower seeds, garlic, broccoli, and brown rice. You can also get selenium from asparagus, spinach, and cage-free organic eggs.