When you are considering purchasing a coral calcium supplements, you will be face with making a choice on weather to purchase marine grade or land based. First of all, the land based coral calcium is taken from deposits of coral that are found on the island of Okinawa themselves. On the other hand marine grade coral calcium is from coral deposits away from the reefs on the bottom of the ocean. There is no live coral harmed in this process and is strictly controlled by the Japanese government.
Coral Calcium is composed of 73 different minerals, of these 73 minerals, calcium is the most abundant of all, thus giving Coral Calcium its name. To me whats important is getting a wide spectrum of minerals in my coral calcium. This is where land based fall short. It is mainly calcium and most the other minerals have been washed out of it over time. Marine grade ahines in this aspect, the calcium part is lower than land but the other 72 minerals are much more abundant. This coral deposit has been laying on the bottom of the oceans and the sea water itself provides many minerals to it. More natural and more healthy in my opinion.
Also there is another difference, it has been determined that in order to get the most absorption of calcium into the body, it need to be accompanied by magnesium and vitamin D3. Land base coral again falls short here in the fact that it contains a very low amount of magnesium found naturally in the product. In order to bring the magnesium count up to the recommended ration of two parts calcium to 1 part magnesium, they have to add man made magnesium to the blend. Here marine grade has the 2 to 1 ration found in it naturally and does not required added magnesium to make it work. Vitamin D3 is added to both products. So my choice would be the marine grade coral calcium coming from Okinawa, Japan.
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