Selenium supplements in a high quality, organic form can help the body get rid of mercury. Including mercury leaked from amalgam fillings. My amalgam filling cracked and I started getting sick and having many food sensitivies. My naturopathic doctor recommended SelenoPrecise because it was a yeast-based selenium which my body could easily use. If you eat a lot of seafood you might just consider supplementing. My ND told me not to waste money on one of the many synthetic seleniums out there. If you want to read more about different kinds of selenium, check out seleniumfacts.com – that’s a great resource