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How Vitamin B12 Injections Affect Your Body: Good or Bad? If you have a low vitamin B12 level, injections can go a long way toward improving your health and well being. But if your B12 level is normal, don't fall for claims that Vitamin B12 Injection Dose for Weight Loss: What Does the Science Say? Will a Vitamin B12 Deficiency Cause Weight Gain or Weight Loss?
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