Dietary calcium intake and risk of fracture and osteoporosis: prospective longitudinal cohort study
Conclusion Gradual increases in dietary calcium intake above the first quintile in our female population were not associated with further reductions in fracture risk or osteoporosis.
(Summary: Study published in May 2011 in the British Medical Journal. Sample size: 61,000 Swedish women over 19 years. Result: No extra benefit to bone density when women consume more than 750 milligrams of calcium a day. Other important factors: avoiding high-acid diet (animal products); sufficient intake of other minerals; vitamin D intake; exercise.)