Spirulina, Chlorella: detox superfood.

Heavy metal toxicity—from metals such as mercury, aluminum, copper, cadmium , nickel, arsenic, and lead—represents one of the greatest threats to our health and ... Although it is a little harder to digest than spirulina, chlorella is known to be effective in removing heavy metals for just this reason.

http://www.wakingtimes.com/2016/03/30/6-potent-superfoods-to-detox-heavy-metals-from-body-mind/