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Calcium and vitamins D and K help reduce bone loss

Researchers in one study divided postmenopausal women into three groups: one took 800 mg of calcium plus 400 IU of vitamin D3 per day; another took the same calcium and vitamin D plus 100 mcg of vitamin K1 per day; the third took the same calcium and vitamin D plus 100 mcg of vitamin K2 per day. There was also a fourth group of women who drank non-fortified dairy only.

Compared to the dairy-only group, all three vitamin groups saw vitamin D levels and total bone mass density increase significantly. Also, compared to the calcium-vitamin D group and the dairy-only group, the two vitamin K groups had fewer signs of total bone loss and increased bone mineral density in the lumbar spine.

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