What is your opinion about the new study that says Calcium Supplement may promote Heart attacks?

I admit I am unsure.
Some people say we can not absorb these supplements well anyway.
I found some links. Below is one.

http://www.dailymail.co.uk/health/article-508504/Doctors-fear-calcium-supplements-raise-risk-heart-attack.html
I am looking for information. Not a political debate.