Is Shell Rich in Calcium? The Surprising Truth
                                
                                
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                                    3 min read                                
                            
                                According to scientific studies, shells from various marine and terrestrial animals are exceptionally rich in calcium carbonate, with some shellfish shells containing up to 95% of this mineral. The question, "Is shell rich in calcium?" is a resounding yes, but its practical application as a dietary source for humans is complex and requires careful processing to ensure safety and proper absorption.