Calcium is a fussy mineral and does not get absorbed easily.It needs the right environment to get absorbed.Only about 20 to 30 per cent of the ingested calcium is absorbed .In women after menopause,the absorption even falls down to as low as seven per cent of the total ingested calcium.
Most of the unabsorbed calcium gets excerted in the urine,some in the stools and the rest in the sweet.For better absorption calcium must be accompanied by magnesium and phosphorous,vitamin A,C and D.Some foods prevent calcium from being efecitvely absorbed and eventually promote bone loss.
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