According to the graph, 60％ of blood are used by 70 years old and over.
After that, it continues chronologically like, 60 years old, 50 years, 40 years and 30 years.
After that, it continues like, 0-20 years old, 20 yraes old, and 10 years old.
Age and Transfusion
Patients' age and blood supply
Age and blood transfusion
Elderly people consume more blood products than young people, and blood donation is indispensable in super aging society like Japan.