Top 9 Vitamin B12 Deficiency Symptoms? [B12 Foods vs. B12 Shots?]

Anaemia is where you have fewer red blood cells than normal or you have an abnormally low amount of a substance called haemoglobin in each red blood cell.
General symptoms of anaemia may include:
extreme tiredness (fatigue)
lack of energy (lethargy)
feeling faint
pale skin
noticeable heartbeats (palpitations)
hearing sounds coming from inside the body, rather than from an outside source (tinnitus)
loss of appetite and weight lossIf you have anaemia caused by a vitamin B12 deficiency, you may have other symptoms, such as:
a pale yellow tinge to your skin
a sore and red tongue (glossitis)
mouth ulcers
pins and needles (paraesthesia)
changes in the way that you walk and move around
disturbed vision
changes in the way you think, feel and behave
a decline in your mental abilities, such as memory, understanding and judgement (dementia)