do people complain of feeling extremely cold after b12 injections Vitamin deficiency can affect many parts the body, especially the nervous system and blood cells. Common symptoms include: π§ Neurological & Mental Symptoms β’ Numbness or tingling in hands and B12 Deficiency: Still America's #1
Description
The people who are at the highest risk of B12 insufficiency or deficiency are older adults, those with atrophic gastritis, gastrointestinal disorders, pernicious anemia, those who have had gastrointestinal surgery, vegans, and vegetarians

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Reduces hyperpigmentation Did you know that vitamin B12 can lead to darkening of the skin

However, this remains a preclinical finding that has not been confirmed in human pharmacokinetic studies
