Why are the toxic metals in the minerals not a problem? (like Cl, As, Al, arsenic, lead, etc.
These minerals are in small, trace amounts and organic in nature. They are not toxic in this form and they are derived from ancient vegetation and are naturally chelated to plant proteins. Organic Al actually transmutes into silica and then into calcium according to Professor Lewis Kervran. This is explained in his book Biological Transmutations on page 157. Magalia, California: Happiness Press, 1988.