Sydney: There is growing evidence that calcium supplements increase the risk of heart attacks among older women, say researchers.
Conversely, in women who were taking personal calcium supplements at the start of the trial, combined calcium and vitamin D supplements did not alter their usual cardiovascular risk.The authors suspect that the abrupt change in blood calcium levels after taking a supplement causes the adverse effect, rather than it being related to the total amount of calcium consumed. Further analyses -- adding data from 13 other trials, involving 29,000 people altogether -- also found consistent increases in the risk of heart attack and stroke associated with taking calcium supplements, with or without vitamin D.These analyses led the study authors to conclude that these data justify a reassessment of the use of calcium supplements in older people.IANS
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