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Restoring a deficiency can help you feel like yourself again, but if your levels are already normal, adding more B12 will not create extra energy or other effects your body cannot use
People who have gastrointestinal disorders like celiac disease or Crohn's disease or who have undergone weight-loss surgery may secrete too little hydrochloric acid or intrinsic factor
Certain health conditions such as intestinal or stomach problems, poor nutrition, cancer, HIV, pregnancy, old age, veganism and alcoholism can cause vitamin B12 deficiency
Factors to Consider When Choosing Needles for B12 Injections The choice of needle can impact the comfort of the injection and the accuracy of dosage delivery
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