Blood Diseases

When a person suffers from anaemia there are not enough red blood cells to supply the body with the oxygen it needs. Leukemia is a kind of cancer of the bone marrow, in which not enough or abnormal white blood cells are produced. Without white blood cells diseases can enter your body without being controlled.

When your body does not have enough platelets blood cannot clot well. Even small injuries can lead to a loss of blood because bleeding doesn't stop.

Image: (modified) Mikael Häggström,
Public domain, via Wikimedia Commons

Words

fatigue = to become very tired
shortness of breath = to have problems breathing in a normal way
joint = part of your body that can bend because two bones meet there
swelling = part of your body that becomes larger than normal
lymph node = a small rounded swelling in your body through which a liquid passes before entering your blood system
enlargement = when something gets bigger
spleen = an organ near your stomach that controls the quality of your blood