HEALING EARTH is 100% food grade organic Diatomaceous earth.Our Food Grade Diatomaceous Earth is approx 94% Amorphous Silica! Silica is the most plentiful element on earth, following oxygen; but there are very few foods today that contain an adequate amount to supply the quantity your body needs. It is crucial to bones, tendons, skin, cartilage and blood vessels. The average human body holds approximately 7 grams of silica, a quantity far exceeding the figures for other important minerals such as iron.It is equally important to give our bodies, dietary sources of Silica early in life, and during the aging process when levels in tissue usually drop off steeply. It plays an important role in many bodily functions, and has an influence on absorption of all minerals that the body requires to maintain health. Silica does not accumulate in the body, but is water soluble and easily absorbed/excreted by the intestinal wall rapidly. So daily consumption is important.