does b12 injections cause headaches Headache After Shot: Why It Happens & What to Do Symptoms if You Take Too

Several forms are available, depending on the level of deficiency and individual needs

The synthetic chemical, cyanocobalamin, is not easily absorbed by your body, but methylcobalamin is

Also, children and adolescents with obesity are more than four times as likely to have low B12 levels as those at a healthy body weight

One type of mutation, found almost exclusively in people of Ashkenazi Jewish heritage, affects the autonomic and sensory nervous system development causing familial dysautonomia (FD ) Another mutation causes an increased level of phenylalanine (Phe) in the bloodstream resulting in a metabolic disorder called phenylketonuria (PKU)