Why the study?
Does the interaction between dietary sodium and calcium affect bone mineral density and blood pressure?
Population
1658 females, aged 20-40 years, in Yokohama, Japan and n=48 for WHO cross-centre analysis
Design
Cross-sectional
Authors
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Cross-sectional sodium-calcium correlation is hypothesis-generating; leaves open whether sodium restriction affects bone mineral density or blood pressure.
Does the interaction between dietary sodium and calcium affect bone mineral density and blood pressure?
Moderate sodium restriction may be needed to prevent osteoporosis and cardiovascular diseases due to the interaction between sodium and calcium.
Mizushima et al. (1999) studied this question.
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