Pretty important stuff! About 40 minutes nto the talk he presents his company's "solutions" to the mercury issue. http://www.youtube.com/watch?v=FTIbnGMIHmE&feature=related He does sell a product but it seems like it's worth looking into. I'm not sure how different it is from other silica products but it says it's proprietary. http://www.mhpvitamins.com/id154.html The Intestinal Metals Detox (IMD) is a proprietary product that consists of highly purified silica carrier with covalently attached metal-binding groups. The product is insoluble and functions to bind heavy metals in the gut so that they can be safely eliminated with the bowels; this prevents both absorption of the heavy metals and the generation of free-radicals catalyzed by the metals. In fact, the product can also directly neutralized free-radicals in the gut and thus may play a role in damping gastrointestinal inflammation. Both the silica base and the binding agent are GRAS (generally recognized as safe) for use in food, but since the binding agent is firmly attached to the insoluble silica, it is not absorbed and thus not bioavailable. The product contains no known allergens and no allergic reactions have been reported to date.