When the haemoglobin level in the blood falls below normal and a person’s red blood cell (RBC) count becomes too low Anemia occurs. The iron and protein content in haemoglobin is required for supplying nutrients and oxygen to all part of the body. Some of the common symptoms of anemia include depression sensation on the legs and hands fatigue memory loss and weakness. If you notice any of these above-mentioned symptoms it will be advisable to consult a doctor he can diagnose the condition with a simple blood test. The main causes of anaemia are a deficiency of vitamin B12