Which calcium supplement is most likely to be contaminated with toxic minerals?

Name: Which calcium supplement is most likely to be contaminated with toxic minerals?
Brand: Quizplus
Rating: 4.8 (58 reviews)

Question

Which calcium supplement is most likely to be contaminated with toxic minerals? ​

Quizplus · Accepted Answer

Oyster shells are more likely to be contaminated with toxic minerals such as lead or mercury due to the high levels of pollutants in the ocean where they are sourced. Therefore, it is best to avoid calcium supplements made from oyster shells. The best choice(s) would be calcium lactate, calcium citrate, or calcium carbonate.

Which Calcium Supplement Is Most Likely to Be Contaminated with Toxic