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Blood disorders can affect any of the three main components of blood: 1  Red blood cells, which carry oxygen to the body's tissues. 2  White blood cells, which fight infections. 3  Platelets, which help blood to clot.
Blood clots (DVT and PE) affect am estimated 900,000 Americans each year (Source). Blood clots (DVT and PE) kill an estimated 300,000 Americans each year. The number of deaths from blood clots exceeds those from breast cancer, AIDS,and motor vehicle accidents combined (Source). Blood clots are a leading cause of preventable hospital deaths in the United States (Source).