Blood is composed of several types of cell: red and white cells and platelets.
Chemotherapy acts on all the body’s cells and prevents them from multiplying. Those that multiply very fast, like blood cells, are the most affected and their number decreases.
This decrease varies: it may be slight or very considerable, depending on the different combinations of chemicals administered. Your blood cell count is checked very regularly by means of a blood test known as a ‘complete blood count’ (CBC).