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Calcium
DESCRIPTION/FUNCTION
- Calcium is classified as a macromineral. It builds and maintains bones and
teeth; essential in blood clotting; influences transmission of ions across cell
membranes; required in nerve transmission and muscle contraction; enzyme
activation.
DRI (RDA or AI for Adults)
- Under age 51: 1,000 mg.
- 51 years and older: 1,200 mg.
Major Sources
- Lowfat yogurt, sardines w/bones, blackstrap molasses, nonfat milk,
whole milk, cheese (Swiss, provolone, cheddar, American, cottage),
almonds, spinach, tofu, filberts, Brazil nuts, soynuts, collard greens.
MAINTENANCE/THERAPEUTIC RANGE
POSSIBLE THERAPEUTIC APPLICATIONS
- Cancer (colorectal)
- High blood pressure
- High cholesterol
- Obesity
- Osteoporosis
- Premenstrual syndrome
COMMENTS
- Calcium bound to organic acids (ascorbic, citric, malic, lactic, etc.)
absorbs better than inorganic calcium salts (carbonate) if there is reduced
stomach acid production (hypo- or achlorhydria). The carbonate form can cause
gastrointestinal problems. Some calcium supplements (bone meal, carbonate) may
contain lead, but calcium reduces lead absorption, so this may not be
significant at low levels of lead. Vitamin D increases calcium absorption.
CAUTIONS
- Consult with your health practitioner if you have a tendency to form
calcium-containing kidney stones.
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