It is found only in animal-based foods, with a few exceptions. Neurological symptoms of Vitamin B12 deficiency may be irreversible, so early diagnoses is crucial. Studies link low B12 levels in ...
A B12 deficiency in females can cause symptoms such as fatigue, tingling feet, or depression. The symptoms of a B12 deficiency are not necessarily any different between males or females.
B12 deficiency, which can lead to nerve damage, tends to take three or four years to cause symptoms - usually first appearing as pins and needles in the hands or feet. Tim Key, professor of ...