Research
Macro partitioning
For young premenopausal women, calcium intake between 800-1000 mg/day is optimal for vertebral bone mineral density, with no additional benefit observed for intakes above this threshold.
Aim for 800-1000 mg of calcium daily. Increasing intake beyond 1000 mg/day does not provide additional bone density benefits for young women.
ModerateQualifiesMEDIUM confidence
Closer examination of this relationship suggested that vertebral bone mineral density did not appear to increase with calcium intakes above 800-1000 mg/day, implying a threshold effect
Why this rating
Cross-sectional observational study.
Source
Interaction of calcium nutrition and physical activity on bone mass in young women
Bonnie Kanders et al. · Journal of Bone and Mineral Research · 1988
DOI 10.1002/jbmr.5650030204
cross_sectional · n=60Cited 229×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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- In young premenopausal women, vertebral bone mineral density is significantly correlated with physical activity levels, whereas radial bone mineral density is not.Moderate
- Combining high calcium intake (>800 mg/day) with high physical activity (>970 kcal/day energy expenditure) results in significantly higher vertebral bone mineral density than either factor alone.Moderate
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