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As such, a person with B12 deficiency may have difficulty walking and balancing (2)
The vitamin is water-soluble, meaning your body expels any excess through your pee
In a 2019 study of 140 people, researchers found that the participants who had migraine also had low blood levels of B12
Doctors should understand these to help patients deal with insurance issues
In fact, a 2008 study found that after taking a 1,000 mcg oral supplement, only approximately 1.3% (or 13 mcg) of B12 was absorbed into the bloodstream
When someone is genuinely deficient, they may notice improvement in energy or mental clarity within a few days, though this varies from person to person and is most likely in people who were low to begin with
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