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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 ...
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 ...
Vitamin B12, vitamin B-12, cobalamin: ... for pregnancy is 2.6 micrograms per day ... Gastric acid is needed to release vitamin B 12 from protein for absorption.
Vitamin B12 is needed to create healthy red blood cells. ... 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.
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 ]
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%.