
Calcium supplementation increases the risk of heart attack and stroke.
An alarming new meta-analysis published in the journal
Nutrients titled, "Cardiovascular Effects of Calcium Supplements," brings to the forefront the
serious though mainly downplayed health risks associated with calcium supplementation, concluding they increase the risk of heart attack by 27%-31% and the risk of stroke by 12%-20%.[1]
The study based its findings on randomized, placebo-controlled trials, and did not find a lessening of the observed adverse effects with the co-administration of vitamin D. The study noted that the increased cardiovascular risk associated with calcium supplements is consistent with previous epidemiological observations that higher circulating calcium concentrations are linked with cardiovascular disease in normal populations. They postulated that, "There are several possible pathophysiological mechanisms for these effects, including effects on vascular calcification, vascular cells, blood coagulation and calcium-sensing receptors." They concluded that, "[T]he non-skeletal risks of calcium supplements appear to outweigh any skeletal benefits."
The entire study can be viewed on
PubMed Central, the free digital database of full-text scientific literature in biomedical and life sciences.
In past articles, we delved deeply into the cardiotoxicity of the limestone-, bone meal- or oyster shell-based calcium supplements that dominate the mainstream marketplace,[2] [3]and also the fatally flawed bone mineral density (BMD) guidelines set forth by the World Health Organization in the mid-90's, which essentially
reclassified aging as a disease by using the bones of a young adult (25 year old) at peak bone mass as the standard of normality for older women of all ages (i.e. the
T-score). As a result of these guidelines, millions of asymptomatic women were suddenly told they had a new 'bone disease' called osteoporosis, and millions more were told they had 'pre-osteoporosis' or 'osteopenia,' an entirely nonsensical disease classification, arbitrarily conceived, and with no basis in biological or physiological fact. [read more:
Osteoporosis Myth: The Dangers of High Bone Mineral Density]
Comment: For a better option on how to strengthen your health and bones, see our forum discussion "Life Without Bread". Any food that is high in sugar or anti-nutrients will not benefit you in the long run.