Unfortunately, what the media has neglected to mention is that this potential problem can easily be averted by always supplementing calcium with vitamin D and vitamin K. Vitamin D is necessary in order to help transport calcium into the blood stream. But once there, calcium can then find its way into soft tissues including blood vessels, thereby leading to calcification or hardening of the arteries which can then lead to cardiovascular disease.
Vitamin K plays a major role in calcium metabolism as it is responsible for activating a key protein that actively transports calcium away from soft tissues and into the bone where calcium can help strengthen bone and diminish the chances of developing osteoporosis.
This is the primary reason why I recommend Isotonix vitamins. Isotonix Vitamin D contains the important addition of vitamin K.
Source: Effect of calcium supplements on risk of myocardial infarction and cardiovascular events: meta-analysis