Article: Calcium conundrum: Some dietary supplements don't measure up to claims

Failing grades ConsumerLab.com tested 15 commercially available calcium supplements for three things: amount of calcium, purity and ability to be disintegrated so the body can absorb calcium. Two of the products contained levels of lead that exceeded a California standard: Coral Calcium Supreme and Source Naturals, which also didnt fully break apart, meaning its calcium might not be fully absorbed by the body. Differing dosages How much calcium you need depends on your age. The National Academy of Sciences makes these recommendations: Age 1 to 3:500 mg/day Age 4 to 8:800 mg/day Age 18 to 50:1,000 mg/day Older than 50:1,200 mg/day

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