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Topic: Calcium

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In the News (Wed 17 Apr 19)

  ►Calcium Facts - Learn the Truth
Calcium is thought to allow the bones to not be broken down for their materials and also to give the bones more calcium in order for them to fully reach their genetic potential.
In a study that substantiates this, increasing the amount of calcium ingested from 80% of the RDA to 110% of the RDA in adolescent girls significantly increased the amount of total body bone as well as the density of the spine.
Calcium carbonate and the premenstrual syndrome: effects on premenstrual and menstrual symptoms.
www.calcium-facts.com   (1960 words)

The major minerals (calcium, magnesium, phosphorus, sodium, chloride and potassium) are needed in the greatest quantities or are present in large amounts in the body.
During pregnancy and breast feeding women in the USA are now advised to have 1,400mg calcium daily and American men and women over the age of 50 years are advised to increased their calcium intake towards 1,500mg because the intestinal absorption of calcium declines with age.
Although the calcium intake of adult vegans tends to be lower than the recommended optimum, it is close to the Estimated Average Requirement.
www.vegansociety.com /html/food/nutrition/calcium.php   (1270 words)

 NOF Osteoporosis Prevention - Calcium Supplements
Calcium is essential for many body functions, including regulation of the heartbeat, conduction of nerve impulses, stimulation of hormone secretions and clotting of blood, as well as for building and maintaining a healthy skeleton.
Calcium is a mineral found in many foods and adequate calcium intake is important because the human body cannot produce calcium.
Calcium, whether from the diet or supplements, is absorbed best by the body when it is taken several times a day in amounts of 500 mg or less, but taking it all at once is better than not taking it at all.
www.nof.org /prevention/calcium_supplements.htm   (922 words)

 The Vegetarian Society UK - Information Sheet - Calcium
Calcium is present in a wide range of foods.
Calcium loss is roughly equal to dietary calcium in adults.
Calcium absorption decreases with age so it is important the elderly have adequate dietary calcium.
www.vegsoc.org /info/calcium.html   (770 words)

 Calcium and Milk: Nutrition Source, Harvard School of Public Health
Calcium is a mineral that the body needs for numerous functions, including building and maintaining bones and teeth, blood clotting, the transmission of nerve impulses, and the regulation of the heart's rhythm.
Calcium can also be found in dark green leafy vegetables, such as kale and collard greens, and in dried beans and legumes.
Calcium is also found in spinach and chard, but these vegetables contain oxalic acid, which combines with the calcium to form calcium oxalate, a chemical salt that makes the calcium less available to the body.
www.hsph.harvard.edu /nutritionsource/calcium.html   (2855 words)

 Calcium: The Test
Blood calcium is tested to screen for, diagnose, and monitor a range of conditions relating to the bones, heart, nerves, kidneys, and teeth.
Some conditions where ionized calcium should be the test of choice include: critically ill patients who are receiving transfusions or IV fluids, patients undergoing major surgery, and patients with blood protein abnormalities like low albumin.
Calcium absorption, use, and excretion are regulated and stabilized by a feedback loop involving PTH and Vitamin D. Conditions and diseases that disrupt calcium regulation can cause inappropriate acute or chronic elevations or decreases in calcium and lead to symptoms of hypercalcemia (excessive) or hypocalcemia (deficient).
www.labtestsonline.org /understanding/analytes/calcium/test.html   (1308 words)

 WHFoods: calcium
Certain types of dietary fiber like the fiber found in wheat and oat bran, may interfere with calcium absorption by decreasing transit time (the amount of time it takes for digested foods to move through the intestines), limiting the amount of time during digestion for calcium to be absorbed.
To improve absorption, calcium carbonate should be taken with meals, as the presence of food in the stomach causes the secretion of hydrochloric (stomach) acid, a compound that breaks down calcium carbonate.
Chelated calcium is calcium bound to an organic acid, such as citrate, malate, lactate, or gluconate; or to an amino acid, such as aspartate.
www.whfoods.com /genpage.php?tname=nutrient&dbid=45   (1938 words)

The lack of adequate calcium and the minerals necessary for calcium's proper absorption have been associated with osteoporosis, cramps, colitis, bone fractures, dental health problems, brittleness of nails, insomnia, and bruxism.
Calcium is the most abundant mineral in the body, essential to life itself, with 99 percent of calcium found in bones and teeth.
Calcium Hydoxyapatite is the microcrystalline form of calcium and phosphorus in the exact ratio formed by the body.
www.naturalways.com /calcium.htm   (908 words)

  Calcium - Wikipedia, the free encyclopedia
Calcium is a soft grey alkaline earth metal that is used as a reducing agent in the extraction of thorium, zirconium and uranium.
Calcium, combined with phosphate to form hydroxylapatite, is the mineral portion of human and animal bones and teeth.
Calcium oxide (lime) is used in many chemical refinery processes and is made by heating and carefully adding water to limestone.
en.wikipedia.org /wiki/Calcium   (1085 words)

 Calcium carbonate - Wikipedia, the free encyclopedia
Calcium carbonate is widely used as an extender in paints, in particular matt emulsion paint where typically 30% by weight of the paint is either chalk or marble.
Calcium carbonate is widely used medicinally as an inexpensive calcium supplement, antacid, and/or phosphate binder.
Calcium carbonate is known as whiting in ceramics/glazing applications, where it is used as a common ingredient for many glazes in its white powdered form.
en.wikipedia.org /wiki/Calcium_carbonate   (760 words)

 Linus Pauling Institute at Oregon State University
Although calcium stone formers have been advised to restrict calcium intake in the past, a cross-sectional study of 282 patients with calcium oxalate stones found that dietary salt, as measured by urinary sodium excretion, was the dietary factor most strongly associated with urinary calcium excretion (23).
Until the relationship between calcium and prostate cancer is clarified, it is reasonable for men to consume a total of 1,000 to 1,200 mg/day of calcium (diet and supplements combined), which is the adequate intake level recommended by the Food and Nutrition Board of the Institute of Medicine (3).
These studies were not designed to examine the effect of calcium on obesity or body fat, and their significance was unclear until recent studies in cell culture and animal models indicated that low calcium intakes could result in hormonal and metabolic changes that increase the tendency of fat cells to accumulate fat (46).
lpi.oregonstate.edu /infocenter/minerals/calcium   (5486 words)

 It's Elemental - The Element Calcium
Although calcium is the fifth most abundant element in the earth's crust, it is never found free in nature since it easily forms compounds by reacting with oxygen and water.
Calcium is also used to remove oxygen, sulfur and carbon from certain alloys.
Calcium is also used in vacuum tubes as a getter, a material that combines with and removes trace gases from vacuum tubes.
education.jlab.org /itselemental/ele020.html   (273 words)

 Dietary Supplement Fact Sheet: Calcium
Calcium is needed for muscle contraction, blood vessel contraction and expansion, the secretion of hormones and enzymes, and sending messages through the nervous system [2].
Calcium absorption may be reduced in vegetarians because they eat more plant foods containing oxalic and phytic acids, compounds which interfere with calcium absorption [2].
Calcium citrate malate is a form of calcium used in the fortification of certain juices and is also well absorbed [116].
ods.od.nih.gov /factsheets/calcium.asp   (8085 words)

 Chemistry and the Aquarium
Calcium is also frequently enriched in hydrothermal vent water that is released on the bottom of the ocean.
Calcium in reef tank water is expected to be similar to that in seawater, with a couple of exceptions.
Kinetics of dissolution and precipitation of calcium carbonate in seawater.
www.advancedaquarist.com /issues/mar2002/chem.htm   (3851 words)

 ENIVA: Calcium   (Site not responding. Last check: )
Calcium is one of the first elements in the body to go out of balance when the diet is inadequate.
Calcium levels in the body must be balanced with the proper form, diet, and combination of magnesium.
Calcium promotes alertness and mental clarity for both children and adults.* Calcium along with magnesium and chromium plays an integral role to help neurotransmitters to function properly.* In addition, scientific studies suggest a link between a large consumption of refined sugar and behavior.
www.eniva.com /products/mfl_calcium.html   (1316 words)

 Calcium - Supplements
This 1% of calcium is so important to maintain that the body will draw on calcium stores in the bones — even at the expense of causing osteoporosis — to keep blood and cellular calcium levels within the proper range.
Practically nobody consumes enough calcium in their daily diet, so calcium is one of the nutrients for which supplementation is highly recommended.
Bonjour JP, Rizzoli R. The property of calcium in the child and the adolescent: importance in the acquisition of bone mineral density.
www.supplementwatch.com /supatoz/supplement.asp?supplementId=64   (1344 words)

 NOF Osteoporosis Prevention - Calcium and Vitamin D Recommendations
Calcium alone cannot prevent or cure osteoporosis, but it is an important part of an overall prevention or treatment program.
Having extra calcium in a variety of foods also makes it easier for parents who are trying to ensure that their adolescent daughters, especially, are getting enough calcium.
The relationship between calcium absorption and vitamin D is similar to that of a locked door and a key.
www.nof.org /prevention/calcium.htm   (800 words)

 Calcium, HYG-5557-97
Calcium, a mineral, is used for building bones and teeth and in maintaining bone strength.
The average calcium intake by women 20 to 29 years of age was about 778 milligrams per day, and the intake by women 30 to 50 years of age was about 719 milligrams.
Calcium absorption is dependent upon the calcium needs of the body, the foods eaten, and the amount of calcium in the foods eaten.
ohioline.osu.edu /hyg-fact/5000/5557.html   (1029 words)

 Ask the Dietitian - by Joanne Larsen MS RD LD - Osteoporosis
How much calcium is in your bones, however, is not a simple issue of getting enough calcium and vitamin D during your growth years.
Calcium supplementation currently recommended is 1,500 milligrams per day for women not taking estrogen and 800 milligrams per day for women on estrogen.
To ensure an adequate intake of calcium (RDA is 800 milligrams for females (25 to 51+ years), you should drink two to three cups of milk per day.
www.dietitian.com /calcium.html   (2244 words)

 Discovery Health :: Calcium: The "Miracle" Mineral
For years, women have been told to bone up on calcium to prevent osteoporosis, a gradual thinning of the bones, but now this so-called miracle mineral is also being touted for its potential to promote weight loss, relieve depression and anxiety associated with premenstrual syndrome, control high blood pressure, and ward off strokes.
Zemel discovered that a high calcium diet released a hormone which sends signals that are read by the body's fat cells to lose weight.
Women on the high calcium diet were less irritable, weepy, and depressed and averted backaches, cramping, and bloating.
health.discovery.com /centers/womens/calcium/calcium.html   (481 words)

 The Calcium Information Resource
Calcium deficiency is usually due to an inadequate intake of calcium.
If an individual's diet is low in calcium, there may not be sufficient amounts of calcium available in the blood to be returned to the bones to maintain strong bones and total body health.
The calcium supplement in this clinical study had 500 mg of elemental calcium as calcium carbonate along with 200 IU (International Units) of vitamin D3 in each pill.
www.calciuminfo.com   (996 words)

 Calcium in the Vegan Diet -- The Vegetarian Resource Group
Calcium, needed for strong bones, is found in dark green leafy vegetables, tofu made with calcium sulfate, calcium-fortified soy milk and orange juice, and many other foods commonly eaten by vegans.
Calcium is also needed for many other tasks including nerve and muscle function and blood clotting.
When you realize that there is as much or more calcium in 4 ounces of firm tofu or 3/4 cup of collard greens as there is in one cup of cow's milk, it is easy to see why groups of people who do not drink cow's milk still have strong bones and teeth.
www.vrg.org /nutrition/calcium.htm   (1510 words)

 Calcium   (Site not responding. Last check: )
Calcium shavings begin to react with the air almost as soon as they are made..
Although compounds of the alkaline earth metal have been used since the days of the pharaoh, pure calcium metal was not obtained until Humphrey Davy electrolyzed it from a salt in 1808.
In our laboratories, students use calcium carbonate, chloride and nitrate and react pure calcium with water.
chemlab.pc.maricopa.edu /periodic/Ca.html   (114 words)

 MedlinePlus Medical Encyclopedia: Calcium in diet
Calcium is one of the most important minerals for the growth, maintenance, and reproduction of the human body.
Calcium helps with blood clotting, nerve signaling, muscle contraction and relaxation, and the release of certain hormones.
Calcium is added to several food products, such as breads and orange juice, to make them a significant source of calcium for persons who do not eat a lot of dairy products.
www.nlm.nih.gov /medlineplus/ency/article/002412.htm   (846 words)

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