However, the latest research shows that the use of calcium preparations has little impact on bone building, and can have health effects.
The subsequent studies have confirmed the negative effect of calcium on the heart and blood vessels, articular cartilage, kidneys and gastrointestinal tract. Finally, a large study published in the Journal of Bone Metabolism published in 2014 called into question the site of calcium in the modern approach to osteoporosis.
Published meta-analyzes have shown that supplementation with calcium reduces the risk of fracture by only 10 percent, which is at the border of statistical and clinical significance. At the same time, analyzes show that calcium supplements increase the risk of stroke and the risk of myocardial infarction. This meta-analysis included studies involving people who took calcium alone, without supplemental nutrients such as vitamins D and K.
It’s about the so-called “Calcium paradox”, or simply said the fact that our bones need calcium, and not our heart.
The effect on blood vessels
Studies have shown that without adequate intake of vitamin D and vitamin K2, calcium will not be deposited in bones where it is needed to maintain bone density, but in arteries and soft tissues where it can cause atherosclerosis and, consequently, lead to heart or stroke.
If you are taking calcium tablets, but you have a vitamin K2 deficiency, it may be worse than not taking supplements at all, as shown by a meta-analysis that linked calcium intake with heart attacks.