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Absorbtion
Coral calcium and calcium carbonate have only one similarity: coral is a carbon-based form. Only in coral calcium one can find 72 trace minerals, magnesium, and calcium. The minerals in coral calcium are in an organic form and not elemental, which results in a higher absorption rate. Other calcium carbonate substances are just plain calcium carbonate.
Many seem to believe that coral calcium and calcium carbonate have the same rate of absorption. This is just not the case. The body absorbs coral calcium more efficiently and more naturally than other calcium supplements because it is porous. Coral calcium comes from the remains of coral and is naturally porous — full of microscopic holes. Even the smallest grains of powdered coral calcium are a few microns in size; however, each powder grain retains its porous quality.
As a result of the porous nature of coral calcium, it is less dense than calcium carbonate from limestone and other sources and dissolves more quickly in the stomach's acidic environment. It is therefore easier for the digestive tract to handle. Since coral calcium has a greater surface area, because of all the holes, one gram of coral calcium is larger in size than one gram of other types of calcium carbonate. These other forms of calcium carbonate are smaller in size due to greater density of the particles relative to coral calcium. This means that, gram for gram; more calcium is exposed to and absorbed by the cells of the body. Coral calcium has high bioavailability, leading to more calcium reaching the body's system and less leaving the body as waste.
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