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Supplement sleuth.(Q&A)(calcium intake for men and women)(Brief article)

Better Nutrition

| July 01, 2007 | Bushkin, Gary | COPYRIGHT 2007 PRIMEDIA Intertec, a PRIMEDIA Company. All Rights Reserved. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

Q: Is calcium best absorbed when taken with protein? Are candies and chews absorbed the same as other forms of calcium? How much should men and women take?

A: Unfortunately for consumers, the notion that calcium is best absorbed when taken with protein is not clear. While some evidence points to the fact that protein intake has no role in the absorption of dietary calcium and absorption is not affected by a high-protein diet, contrasting studies report that a reduction in dietary protein leads to a decline in calcium absorption and a high-protein diet depletes calcium from the body.

Calcium's delivery system and form affect whether or not the mineral will be absorbed. Calcium carbonate, nature's most concentrated source, is poorly assimilated and absorbed compared with calcium phosphate, which is chemically similar to calcium in bones; calcium lactate, gluconate, citrate and ...

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