One study found people who had high calcium intake had less — not more — calcification in their coronary arteries. But that was mostly true for people who got calcium from their meals, rather than pills. There were hints that supplements might increase calcium deposits in the arteries.

What is the most common side effect of calcium supplementation?

Calcium supplements cause few, if any, side effects. But side effects can sometimes occur, including gas, constipation and bloating. In general, calcium carbonate is the most constipating.

Can calcium supplements cause aortic calcification?

Oral calcium supplements do not affect the progression of aortic valve calcification or coronary artery calcification.