Small cuts in the corner of the mouth, a craving for strange foods, tiredness, falling asleep in the chair watching tv, not being able to wake up properly in the morning, shortness of breath,headaches iron sulphate tablets make your poo black, and very hard to get out,lack of co-ordination walking into doors etc,simple blood test checks it, but there will be follow up tests, barium enema, very interesting,camera down throat looking for blood loss, possibly a bone marrow biopsy, and a CT scan,then you may get a small infection ,be admitted to hospital the same day, be there for 3 days,have a small operation and be off work for 2 months, have a blood transfusion of 4 units equal to 4 pints of blood. somebody i knew had all the things listed above and in the end stopped going to the DR,