A French study found a strong association with elevated serum B12 and cirrhosis and hepatitis (Deneuville, 2009)
READ MORE: Folate deficiency symptoms, how it works with vitamin B12, food sources Symptoms of anaemia: extreme tiredness (fatigue) lack of energy (lethargy) breathlessness feeling faint headaches pale skin noticeable heartbeats (palpitations) hearing sounds coming from inside the body, rather than from an outside source (tinnitus) loss of appetite and weight loss Symptoms of vitamin B12 deficiency 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 irritability depression changes in the way you think, feel and behave a decline in your mental abilities, such as memory, understanding and judgement (dementia) A person could display some of these symptoms by having a vitamin B12 deficiency but not developed anaemia

For example, vitamin IV therapy supplies b vitamins to assist in converting food into fuel, while amino acids directly support muscle function and recovery
Strategies to Relieve Migraines and Prevent Vitamin B Deficiency Vitamin B deficiency can manifest in symptoms such as nerve issues, poor immunity, fatigue, numbness of the hands and feet, etc