Is calcium the protagonist or antagonist?

I had just finished playing a round of tennis and we were enjoying some snacks and drinks on the patio when my friend Joanne asked me , “Did you read the article about calcium supplements and will they increase your risk of having a heart attack?.” I immediately had a flashback to 2002 when the Women’s Health Initiative was first published and thousands of distraught women discontinued their hormone replacement therapy overnight. I thought to myself, “Here we go again”. Another misinterpreted scientific article and thousands of women stopping their calcium supplements. She was referring to the article published May 23, 2012, by a group of scientists at the German Cancer research Center in Heidelberg. They published a study based

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