Mortality doubles in women when diet is high in #calcium and #supplements are also taken
Another study has highlighted possible dangers if women take calcium supplements.
The study looked at calcium intake and cardiovascular mortality in a cohort of Swedish women, and was a prospective, longitudinal, population-based study.
Researchers found high rates of calcium intake were associated with higher all-cause and cardiovascular death rates but not with deaths from stroke.
The study is the latest in a series of contentious analyses linking calcium intake and cardiovascular events. Just previous to this study, a National Institutes of Health–sponsored study suggested that a high intake of supplemental calcium increased the risk for cardiovascular disease (CVD) death in men, but not women.
Again, this study seemed to indicate that it was calcium supplements and not calcium from food that was the issue. The highest intakes of calcium (>1400 mg/day) were associated with higher all-cause risk for death as compared with intakes of 600 to 1000 mg/day. All-cause and cardiovascular mortality was especially strong if a high dietary intake of calcium was combined with calcium supplements: Women with the highest intake of calcium (>1400 mg/day) and who used supplement tablets had an all-cause risk for death 2.5 times higher than women who had similar total intakes but were not taking a supplement.
BMJ. Published online February 13, 2013. Full text