Anaemia : Anaemia is the deficiency in the number or quality of red blood cells in the body. Causes of anaemia: excessive blood loss, reduced production of RBC, excessive destruction of blood cell ,destruction of bone marrow etc. Types of anaemia There are many types of anaemia. Iron deficiency anaemia: It is anaemia due to insufficient supply of iron to bone marrow. Causes of iron deficiency anaemia: excessive blood loss, increase physiological demand for iron, inadequate iron intake, impaired absorption of iron etc. Aplastic anaemia: Aplastic anaemia is a disorder in which the bone marrow fails to make enough blood cells. Causes of aplastic anaemia: drugs like vincristine etc, certain chemicals like TNT, DDT etc, certain physical agents like x-ray etc, is responsible for aplastic anaemia. Megaloblastic anaemia: Megaloblastic anaemia is a anaemia in which the bone marrow produce large, abnormal, immature RBC. Causes of megaloblastic anaemia: deficiency of vitamin B12 , ...