So, in direct conflict with the last post, and last study I discussed, here is another study that showed calcium intake being associated with an increased risk of heart attacks..
The data comes from over 61,000
Swedish women enrolled in the Swedish Mammography study that followed them for an average of 19 years. Dietary intake was assessed using
food frequency questionnaires at baseline (between 1987 and 1990) and
again in 1997, and calcium intakes were estimated by
adding together dietary and supplemental calcium sources.
The highest rates of death from all
causes, cardiovascular disease, and ischemic heart disease (but not
stroke) were observed among those with a dietary calcium intake higher
When compared to those with dietary intakes between 600 and 1000 mg/day, heart attack risk was more than doubled!
Interestingly, those with calcium intake under 600 mg/day also saw higher risk.
However, it’s important to understand
that this study did not demonstrate causality, and in fact, there doesn't seem to be a single human study that actually shows calcium intake causes heart attacks directly. This is because it the evidence shows it's a lack of vitamin K2 that is responsible for this link--not calcium--and most people are deficient in this essential vitamin.
I know this flip-flopping in the results of these studies are confusion to say the least, but stay focused on the biochemistry of this silliness and it'll all make sense.
Click HERE to read more on this topic and other studies on calcium.
Source: Long term calcium intake and rates of all cause and cardiovascular mortality: community based prospective longitudinal cohort study
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