Guest guest Posted March 30, 2007 Report Share Posted March 30, 2007 >In addition, there have been some recent discussion on >bone density and osteoporosis as a concern for those >on CRON. > >Excess sodium can increase urinary calcium excretion >so limiting sodium is another effective means to >decrease bone loss. For a more recent medical study, see " Role of dietary sodium in osteoporosis. " J Am Coll Nutr. 2006 Jun;25:271S-276S, PMID: 16772639. Abstract: Sodium, in the form of sodium chloride, elevates urinary calcium excretion and, at prevailing calcium intakes, evokes compensatory responses that may lead to increased bone remodeling and bone loss. The calciuria is partly due to salt-induced volume expansion, with an increase in GFR, and partly to competition between sodium and calcium ions in the renal tubule. Potassium intakes in the range of current recommendations actually reduce or prevent sodium chloride-induced calciuria. At calcium intakes at or above currently recommended levels, there appear to be no deleterious effects of prevailing salt intakes on bone or the calcium economy, mainly because adaptive increases in calcium absorption offset the increased urinary loss. Such compensation is likely to be incomplete at low calcium intakes. Limited evidence suggests equivalent bone-sparing effects of either salt restriction or augmented calcium intakes. Given the relative difficulty of the former, and the ancillary benefits of the latter, it would seem that the optimal strategy to protect the skeleton is to ensure adequate calcium and potassium intakes. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 31, 2007 Report Share Posted March 31, 2007 The DASH diet studies, showed that while eating better could mitigate some of the dangerous effects of sodium, it couldnt negate it, nor was it as advantagous as limiting or avoiding salt. The article you posted is only a " review " article.. one persons opinion of the evidence. The Am J Coll Nutr, is not considered one of the better scientific journals. In addition, the author, P. Heaney, is a paid consultant to the dairy industry. You can read a critique of not only the article but the entire issues " supplement " on salt. http://www.cspinet.org/new/pdf/jacn_letter_1.pdf Regards Jeff Quote Link to comment Share on other sites More sharing options...
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