Anaemia, or lack of red blood cells, is the commonest physical abnormality in humans worldwide, and can be a symptom of a serious underlying disorder. Coping with Anaemia looks at the many reasons why people may be anaemic, including the controversial question of nutritional anaemia. Iron supplements are rarely the full answer to anaemia, says Dr Tom Smith, and priority must be given to discovering the underlying cause so that treatment can restore your energy and well-being.