People asked me this a couple days ago in response to my post on the subject. In 2019 it may be news to some. But the initial post referenced was one I shared 3 years ago. And the main study referenced within it was begun over 10 years prior to that:https://www.newswise.com/articles/calcium-supplements-may-damage-the-heart?fbclid=IwAR0LtdxaMUr9g3YI-M9YUmdRmevQomYUH-pxtNWIOmqP6RYszSyqgcWEps4. It’s more like two decades that we’ve had strong evidence of risk increases due to excess calcium.
Again, nothing is good or bad, so much as productive or counterproductive. Lots of calcium is inert. It could be good. It could be bad. Piles of it while in a dearth of vitamin d and k2 is counterproductive to health in most people.