Critics of a low-carb diet sometimes suggest that too much protein will weaken bones. A new study in the American Journal of Clinical Nutrition throws doubt on that belief. Researchers collected dietary data from more than 500 women between the ages of 14 and 40. Bone mineral density was measured each year at the hip, the spine and the whole body. When the scientists analyzed the results, they found no difference in bone mineral density according to protein intake, with one exception. Women who at less vegetable protein had slightly but not significantly lower bone mineral density. The investigators conclude that protein intake in the upper range of typical US consumption does not have a negative effect on bone in premenopausal women.
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