How calcium and carbonate helps in shell formation | Britannica
2:58
How calcium and carbonate helps in shell formation | Britannica
11 months ago
britannica.com
Most calcium is sourced from rocks, such as limestone. That's why it's so hard to digest. Around 90% of calcium supplements are calcium carbonate, which is literally ground-up limestone from quarries. It's rock, compressed into a tablet. Calcium carbonate requires high stomach acid to break down. But stomach acid drops as you age, especially after 40. So you're taking calcium that your body can't break down. It just passes through or sits heavily in your stomach. A lot of people have experienced
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Most calcium is sourced from rocks, such as limestone. That's why it's …
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