<p><b>Richmond Township</b> is a <a href=/pages/w/132303173474206>civil township</a> of <a href=/pages/w/112665105412526>Macomb County, Michigan</a>, United States. At the <a href=/pages/w/113048572054318>2000 census</a>, the township population was 3,416.
Dietary sodium is a major determinant of urinary calcium loss (1) . High-sodium intake results in increased loss of calcium in the urine, possibly due to competition between sodium and calcium for reabsorption in the kidneys or by an effect of sodium on parathyroid hormone (PTH) secretion.
Most of this circulating calcium is bound to albumin. Because of this, changes in serum protein concentrations can affect total blood calcium concentrations. Ionized calcium is the biologically active fraction and its concentration is tightly regulated by PTH.