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How to Test for Functional Vitamin B12 Deficiency Many doctors mistakenly rely on serum B12 levels in the blood to test for vitamin
So def increase your fiber, and probiotics
It converts food into usable energy and prevents fatigue when taking a low-calorie diet
If you suffer from mild depression once in a while, you can try a B12 shot as a mood booster some people have reported feeling happily giddy afterwards, but not for long
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