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Calcium: Difference between revisions
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|title=Calcium: Wiki facts for this cookery ingredient | |||
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|description=Calcium is the chemical element with symbol Ca and atomic number 20. | |||
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[[Image:Pamukkale Hierapolis Travertine pools.JPG|300px|thumb|right|Travertine pools, Pamukkale Hierapolis in Turkey [''travertine: limestone deposited by mineral springs'']]] | [[Image:Pamukkale Hierapolis Travertine pools.JPG|300px|thumb|right|Travertine pools, Pamukkale Hierapolis in Turkey [''travertine: limestone deposited by mineral springs'']]] | ||
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*Calcium carbonate is the most common and least expensive calcium supplement. It should be taken with food. It depends on low pH levels for proper absorption in the intestine. While most people digest calcium carbonate very well, some might develop gastrointestinal discomfort or gas. Taking [[magnesium]] with it can help to avoid constipation. Calcium carbonate is 40% elemental calcium. 1000 mg will provide 400 mg of calcium. However, supplement labels will usually indicate how much calcium is present in each serving, not how much calcium carbonate is present. | *Calcium carbonate is the most common and least expensive calcium supplement. It should be taken with food. It depends on low pH levels for proper absorption in the intestine. While most people digest calcium carbonate very well, some might develop gastrointestinal discomfort or gas. Taking [[magnesium]] with it can help to avoid constipation. Calcium carbonate is 40% elemental calcium. 1000 mg will provide 400 mg of calcium. However, supplement labels will usually indicate how much calcium is present in each serving, not how much calcium carbonate is present. | ||
*Antacids frequently contain calcium carbonate, and are a commonly used, inexpensive calcium supplement. | *Antacids frequently contain calcium carbonate, and are a commonly used, inexpensive calcium supplement. | ||
*Coral calcium is a salt of calcium derived from | *Coral calcium is a salt of calcium derived from fossilised coral reefs. Coral calcium is composed of calcium carbonate and trace minerals. | ||
*Calcium citrate can be taken without food and is the supplement of choice for individuals with achlorhydria or who are taking histamine-2 blockers or proton-pump inhibitors. Calcium citrate is about 21% elemental calcium. 1000 mg will provide 210 mg of calcium. It is more expensive than calcium carbonate and more of it must be taken to get the same amount of calcium. | *Calcium citrate can be taken without food and is the supplement of choice for individuals with achlorhydria or who are taking histamine-2 blockers or proton-pump inhibitors. Calcium citrate is about 21% elemental calcium. 1000 mg will provide 210 mg of calcium. It is more expensive than calcium carbonate and more of it must be taken to get the same amount of calcium. | ||
*Calcium phosphate costs more than calcium carbonate, but less than calcium citrate. Microcrystalline Hydroxyapatite (MH) is one of several forms of calcium phosphate used as a dietary supplement. Hydroxyapatite is about 40% calcium. | *Calcium phosphate costs more than calcium carbonate, but less than calcium citrate. Microcrystalline Hydroxyapatite (MH) is one of several forms of calcium phosphate used as a dietary supplement. Hydroxyapatite is about 40% calcium. | ||