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Is B12 Needed for Calcium Absorption?

Nutrients work intricately in our bodies to help optimize each of our functions. Such is the case for the relationship between vitamin B12 and calcium. But the relationship may not be what you think.

  1. What is Vitamin B12 and Why is it Important?

    • B12 is a vitamin found in meat, eggs, and dairy products. It is an essential nutrient as it affects normal cell metabolism including DNA and fatty acid synthesis. Without vitamin B12, the nervous system and brain will not function optimally.

    The Role Calcium Plays

    • Calcium is a mineral found in dairy products, some dark leafy greens, and some nuts and grains. Like B12, it plays an important role in the body’s ability to function optimally. In addition to keeping bones strong and healthy, calcium plays a significant role in neurotransmitter release and muscle contraction.

    Is B12 Needed for Calcium Absorption?

    • No. Actually the opposite is true--you need calcium for B12 absorption. Here’s how it works: On the surface of the small intestine there are receptors. They absorb B12 only in the presence of calcium. If calcium isn’t present, B12 can be absorbed by passive diffusion B12 to get what’s needed for normal functioning.

    How Much Is Enough?

    • According to the National Institute of Health, the average non-lactating, non-pregnant adult should get 2.4 micrograms per day of B12 and about 1,000 milligrams of calcium.

    Supplementation

    • Fortunately, most daily vitamins contain enough of both B12 and calcium to ensure a body receives the nutrients it needs to function optimally. Additionally, even with the daily vitamin, if you suspect you're not getting the calcium or B12 you need, you can supplement accordingly.

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