Calcium Facts: The human body contains about 1,100 grams of calcium - about 1.5% of our total weight. Calcium as the primary structural mineral in bones, is essential for skeletal health. In addition, the one percent of our body’s supply not found in bone is likewise critical to the heart, muscles, nerve function and metabolic processes. We typically absorb only 30% of the dietary calcium we ingest. Certain dietary factors can reduce our calcium absorption even further: Fiber, caffeine, alcohol, a high-protein diet and oxalates (found in tea, beets and endives). Protein and diuretics increase urinary calcium excretion. Fiber and oxalates inhibit calcium absorption. 80% of all American women are calcium deficient. Men and women over 30 require up to 67% more calcium than do 16 year olds. Calcium is not only essential as a bone-building nutrient, but also show promise as one which helps control blood pressure. The Calcium Information Center reports that blood pressure can be reduced by increasing calcium intake. Calcium assists in the absorption of vitamins and helps with nerve, hormone and enzyme functioning. Some research findings reveal the most effective time to supplement calcium is nighttime. However, at this time, if you have an empty stomach, supplementing betaine hydrochloride (a source of hydrochoric acid) or vinegar can assist with absorption. Other studies report that calcium mineral supplements should be taken with food because the stomach will naturally produce hydrochloric acid at this time. The best advice may be to take your calcium supplement 2 to 3 times per dayas it is believed that the body can only absorb about 500 mg elemental calcium at a time. The form of the calcium taken and which co-nutrients it is taken with are important in achieving the most beneficial results from a calcium supplement. Vitamin D-3 is needed for optimal calcium absorption. The calcium in milk and diary products is actually poorly absorbed. One cup of cooked broccoli actually contains more usable calcium (53% of 178 mg = 94 mg) than 1 oz of cheese (32% of 220 mg = 70 mg). |
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