Between calcium citrate, calcium carbonate, and calcium from oyster shells, which is best?
And also, are any very bad? I bought oyster shell calcium pills from CVS because they seem cheapest. Haven't tried them yet. Thoughts on their bioavailability/health?
asked byPlantGirl (468)
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on August 31, 2012
at 06:39 PM
Calcium from oyster shells is calcium carbonate. I take calcium citrate because I think it is more bioavailable and it's easier on the stomach. I'm not sold on coral calcium--I thought it was environmentally damaging but I could be wrong. It was a big fad a few years ago.
I take calcium (and megadoses of Vit D3 and also magnesium) because my bone density scan last year, before paleo, showed that I may have osteoporosis. It's frustrating because I lifted weights three times a week and even then I still ate pretty well. After cutting out grains I had joint pain resolve. I do have an appt with a rheumatologist coming up so we'll see how I'm doing and if I can stop the calcium. BTW I got my Vit D3 levels up to 86ng/ml so I hope my bones are ok cause I aint gonna be taking any bisphosphonates!
on August 31, 2012
at 05:47 PM
Why are you supplementing with calcium? Even the mainstream media is aware of the dangers of calcium supplementation these days.
The best thing you can do for your bones is resistance training, and possibly supplementing Vitamin D (often lacking). If you are following a paleo-inspired diet, you are probably getting more than enough calcium.
If you find that you need more, plenty of small fish (bones and all), and bone broths are much better ways to get supplemental calcium.
If you absolutely have to use calcium pills, stick with the bioavailable-sourced options - coral, oyster shell, etc.