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  2. A top nutrition scientist and gut health expert shares the ...

    www.aol.com/top-nutrition-scientist-gut-health...

    He explained why he doesn't take vitamin D, but does take vitamin B12. Supplements can feel inescapable: they're seemingly in every grocery store and being peddled by influencers across social media.

  3. Vitamin B12 Is a Power Nutrient. Here's How to Know If ... - AOL

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    Vitamin B12 requirements are low because we can store up to 2,500 micrograms in the liver,” says Ryan D. Andrews, R.D., C.S.C.S., principal nutritionist at Precision Nutrition. So target just ...

  4. These High-Quality Vitamin B12 Supplements Can Help ... - AOL

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    Vitamin B12 should be on your radar, especially if you follow a plant-based diet. Eating a diet that includes foods rich in vitamin B12 can help, but the best B12 supplements can also make sure ...

  5. Human nutrition - Wikipedia

    en.wikipedia.org/wiki/Human_nutrition

    The Recommended Dietary Allowance (RDA) for vitamin B12 is 0.9-2.4 μg/day, while the estimated average requirement in the U.S. and Canada is 0.7-2 μg/day. Elderly individuals with plasma vitamin B12 levels below 148 pmol/L are considered severely deficient, and those with levels between 148 and 221 pmol/L are marginally deficient.

  6. Cyanocobalamin - Wikipedia

    en.wikipedia.org/wiki/Cyanocobalamin

    Cyanocobalamin is a form of vitamin B 12 used to treat and prevent vitamin B 12 deficiency except in the presence of cyanide toxicity. [7] [8] [2] The deficiency may occur in pernicious anemia, following surgical removal of the stomach, with fish tapeworm, or due to bowel cancer.

  7. Vitamin D not recommended for preventing fractures in older ...

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    The U.S. Preventive Services Task Force released a draft recommendation advising against using vitamin D to prevent falls and fractures in people over 60. Pharmacist Katy Dubinsky weighs in.