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2. Vitamin B12 - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12

   Vitamin B12, vitamin B-12, cobalamin: ... for pregnancy is 2.6 micrograms per day ... the person's dietary intake is below recommended levels.

3. 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 ...

4. 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 ...

5. Vitamin B12 deficiency - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12_deficiency

   A diagnosis of vitamin B 12 deficiency is determined by blood levels lower than 200 or 250 picograms per ml (148 or 185 picomoles per liter). Measurement of blood methylmalonic acid (MMA), a vitamin B 12 -associated metabolite, is a commonly used biomarker . [ 2 ]

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

   www.aol.com/top-sign-vitamin-b12-deficiency...

   “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 ...

7. 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%.