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2. Vitamin B12 - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12

   Vitamin B 12, also known as ... dietary supplement B 12 supplementation at 500 to 1000 μg per day allows pernicious anemia and certain other defects in B 12 ...

3. How vitamin B12 could give you an energy boost - AOL

   www.aol.com/finance/vitamin-b12-could-energy...

   How much vitamin B12 do I need per day? Everyone requires a certain amount of B12 depending on their age, starting with .5 mcg per day for infants up to 2.4 mcg for teens and adults and even more ...

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

   www.aol.com/vitamin-b12-power-nutrient-heres...

   The National Institutes of Health recommends that the average man consume a mere 2.4 micrograms a day, which is actually the lowest daily recommended dose of any vitamin. “Vitamin B12 ...

5. The Top Signs You Have a Vitamin B12 Deficiency - AOL

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   “I typically recommend a liquid or sublingual vitamin B12 supplement with at least 50 mcg per day,” says Kitchens. “As you age, your ability to absorb vitamin B12 may decline so I often ...

6. Reference Daily Intake - Wikipedia

   en.wikipedia.org/wiki/Reference_Daily_Intake

   The recommended adequate intake of sodium is 1,500 milligrams (3.9 g salt) per day, and people over 50 need even less." [13] The Daily Value for potassium, 4,700 mg per day, was based on a study of men who were given 14.6 g of sodium chloride per day and treated with potassium supplements until the frequency of salt sensitivity was reduced to 20%.

7. B vitamins - Wikipedia

   en.wikipedia.org/wiki/B_vitamins

   The B 12 vitamin is not abundantly available from plant products [4] (although it has been found in moderate abundance in fermented vegetable products, certain seaweeds, and in certain mushrooms, with the bioavailability of the vitamin in these cases remaining uncertain), [5] making B 12 deficiency a legitimate concern for those maintaining a ...

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

   www.aol.com/lifestyle/high-quality-vitamin-b12...

   Supplements, Vitamin B-12 1,000 mcg With Folic Acid. ... it’s recommended that people who are pregnant or breastfeeding have 2.6 and 2.8 micrograms of B12 a day, respectively, per the NIH says.

9. 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.