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    Archive for the ‘calcium carbonate’ Category

    You Ask, I Answer: Calcium Absorption, Kidney Stone Risk, and Gelatin-Free Vitamin D Supplements

    0904-calcium-supplements1. Is there research that indicates that calcium carbonate’s absorption is superior to that of calcium citrate?

    2. My doctor recently suggested that I supplement my diet with calcium and vitamin D. Is there a heightened risk of developing kidney stones associated with calcium supplementation?

    3. Most of the vitamin D supplements I’ve found contain gelatin as an ingredient. Do you know of any alternative products?

    — Josh Griffin
    (Location Unknown)

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    You Ask, I Answer: Calcium Carbonate in Vegan Beverages

    Tums UltraI’ve noticed that most soy/almond milk has calcium carbonate, which someone once told me was like drinking concrete?

    Is that true?  What is calcium carbonate, exactly?

    — Kerra Olsen
    (Via Facebook)

    Calcium carbonate– an ionic salt —  is a very abundant compound; it’s found almost everywhere in nature, from snail shells to our planet’s crust.  It’s also the main component in Tums!

    Yes, concrete (and chalk) are made from calcium carbonate, but that is not to say you are “eating concrete”.  After all, you can make paper mache paste from flour and water.  That does not mean, however, that a whole grain baguette is just a baked version of of it.

    Most calcium supplements (and calcium-fortified foods, such as non-dairy “milks”) are made from calcium carbonate because it is the least expensive source.  Research also shows that its absorption is the highest.

    Since calcium carbonate is best absorbed with meals, it only makes sense to use it to fortify foods.

    No reason to panic or fear.  Calcium carbonate is a perfectly safe way to get your calcium, provided you don’t have certain conditions (kidney stones being the biggest worry).

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    You Ask, I Answer: Calcium Supplements

    1779509845.JpegI just noticed that there are different kinds of calcium supplements!

    Today at the store I saw some that had calcium carbonate and some that were made from calcium citrate.  Which one is better?

    Thank you so much for this blog.  I read it every day and have learned so much!

    — Elizabeth Tackan
    Woodbury, NJ

    Thank you for your support, Elizabeth.  And thank you for your question!

    Both calcium citrate and calcium carbonate supplements are adequate.

    For optimal absorption, though, take calcium citrate on an empty stomach and calcium carbonate with meals.

    Remember, too, that our bodies can only absorb 500 milligrams at a time.

    If you are looking to supplement 800 milligrams, take one 400 milligram pill in the morning and another at night.

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