Calcium Carbonate
Growing evidence suggests that Calcium Carbonate, which is chalk or limestone, is not a biologically
appropriate form of calcium for human metabolism.  The primary justification for ingesting Calcium
Carbonate is to "support bones," however,
Lancet and the British Medical Journal, recently
published the results of two extensive clinical trails which concluded that Calcium plus Vitamin D
does nothing to prevent bone loss.  Calcium as found in chelated form, e.g. calcium citrate, calcium
bisglycinate, calcium asporatate, or in its natural state as Food, is much more readily absorbed and
utilized within the body, and does not have the risk factors associated with inorganic calcium
ingestion, i.e. calcification of soft tissue, osteoarthritis, constipation, kidney stones, hypertension
and various other side effects of poorly utilized calcium.