Vitamin 12 and Folic acid (B9) deficiency
Vitamin B12 or B9 (commonly called folate) deficiency anaemia occurs when a lack of vitamin B12 or folate causes the body to produce abnormally large red blood cells that can't function properly. Red blood cells carry oxygen around the body using a substance called haemoglobin. Anaemia is the general term for having either fewer red blood cells than normal or having an abnormally low amount of haemoglobin in each red blood cell. Thus a deficiency in either of these vitamins can result in tiredness, lack of energy, disturbed vision, muscle weakness, depression, confusion, problems with memory, judgement, breathlessness, headaches, tinnitus, loss of appetite, weight loss.
Vitamin B12 or B9 (commonly called folate) deficiency anaemia occurs when a lack of vitamin B12 or folate causes the body to produce abnormally large red blood cells that can't function properly. Red blood cells carry oxygen around the body using a substance called haemoglobin. Anaemia is the general term for having either fewer red blood cells than normal or having an abnormally low amount of haemoglobin in each red blood cell. Thus a deficiency in either of these vitamins can result in tiredness, lack of energy, disturbed vision, muscle weakness, depression, confusion, problems with memory, judgement, breathlessness, headaches, tinnitus, loss of appetite, weight loss.