Deficiency is particularly common in elderly people, because the ability to absorb vitamin B12 can decrease with age ( Other people at risk of deficiency include those who have had intestinal surgery, including weight loss surgery
Disorders of cobalamin (vitamin B12) metabolism: emerging concepts in pathophysiology, diagnosis and treatment
However, treatment decisions should always be individualized and medically supervised
Nervous System Issues : Vitamin B12 injections can sometimes cause nervous system problems, such as numbness or tingling in the hands and feet, muscle weakness, or difficulty walking
(NOTE: There is an ongoing debate about whether 5-Amino 1MQ should be classified as a small molecule or a peptide, but thats a discussion far beyond the scope of this article) It was discovered in 2017 by researchers at the University of Texas who were attempting to discover small, selective, and membrane-permeable inhibitors of an enzyme called nicotinamide N -methyltransferase (NNMT)
The thigh is also easy to reach, making it a preferred site for those who self-administer shots