Tag: Calcium carbonate side effects

While often marketed as a natural supplement, calcium derived from oyster or other shells is essentially calcium carbonate and carries the same potential side effects as synthetic forms. For instance, a 2021 study highlighted persistent concerns regarding the presence of lead in certain calcium supplements, including those sourced from animal bone and oyster shells.

Stomach acid production often decreases with age, a key factor when choosing a calcium supplement. When considering which is better for seniors, calcium citrate or calcium carbonate, understanding the differences in absorption, cost, and side effects is crucial for maintaining bone health.